WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE). Consider TIME AND time dilation ON BALANCE. c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. In other words, WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider what is THE EARTH/ground ON BALANCE !! The stars AND PLANETS are POINTS in the night sky. The rotation of WHAT IS THE MOON matches the revolution, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider WHAT IS THE EYE ON BALANCE. Now, consider, ON BALANCE, what is the fully illuminated (AND setting/WHITE) MOON !!! So, ON BALANCE, consider what is the orange (AND setting) Sun !!! ON BALANCE, it is the SAME SIZE as WHAT IS THE EYE !!! CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME AND time dilation ON BALANCE. Indeed, WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. Now, notice what is the TRANSLUCENT AND BLUE sky ON BALANCE; AS what is THE EARTH is ALSO BLUE. GREAT !!! So, consider, ON BALANCE, why and how it is that there is something instead of nothing. (BALANCE AND completeness go hand in hand.) It ALL does CLEARLY make perfect sense ON BALANCE !!!! A given PLANET (including WHAT IS THE EARTH) sweeps out equal area in equal TIME, AS ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!!! GREAT !!! By Frank Martin DiMeglio Consider what is THE SUN. Consider what is THE EYE. The stars AND PLANETS are POINTS in the night sky. This CLEARLY explains and proves what is the fourth dimension. By Frank Martin DiMeglio
What if a random dude, with great imagination and the ability to understand and visualize how mechanisms work knows what is gravity? What if his answer is agreed by math, observations, theory and the reality and has implications on everything, from transport to energy production and matter manipulation? I'm that guy & if I get 10k likes to my account, I will make a video explaining what gravity is in such a way that even 7 years old's will understand. ps to anybody wondering why I want followers first: I've spent too much time and energy on this question to give the answer away for free.
@Noelle Leger gravity is just the effect caused by energy(mass) . The smaller space energy is kept in the higher the pit hole created by mass.(Einstein theory ) ___________Light,all particles are waves . ___________imagine a straight rope 🪢. U put energy and make it go up and down quickly and a particle with hight equal to the energy you put in is created and travells in the Rope 🪢 in the speed of light 🕯️.lol
The ultimate mathematical unification (AND UNDERSTANDING) of physics/physical experience combines, BALANCES, AND includes opposites. The BALANCE of what is gravity WITH what is inertia/INERTIAL RESISTANCE requires and involves TIME AND time dilation ON/IN BALANCE, AS gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); AS this CLEARLY explains the fourth dimension; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. INSTANTaneity is fundamental to what are TIME AND time dilation ON/IN BALANCE. Accordingly, ON BALANCE, INSTANTaneity is fundamental to what is the FULL and proper understanding of physics/physical experience; AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE. What is GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. What is E=MC is taken directly from F=ma, AS the rotation of WHAT IS THE MOON matches the revolution; AS the stars AND PLANETS are POINTS in the night sky. Great. INDEED, c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. “Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY, AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). A given PLANET (including what is THE EARTH) sweeps out equal area in equal TIME. Great. What is E=MC is taken directly from F=ma. Consider TIME AND time dilation ON/IN BALANCE. INDEED, consider what is THE EYE ON BALANCE !!! Notice WHAT IS the fully illuminated AND setting/WHITE MOON ON BALANCE !!! NOW, consider what is the TRANSLUCENT AND BLUE sky ON BALANCE !!! So, consider what is the orange AND setting Sun ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/as) what is GRAVITATIONAL force/ENERGY, AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE. Consider TIME AND time dilation ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE). GREAT !!!! BALANCE AND completeness go hand in hand. Carefully consider, ON BALANCE, why and how it is that there is something instead of nothing !!!! By Frank Martin DiMeglio
@@bing43 the satellites are the prove of the opposite: if there isn't a force, there isn't an acceleration, which means that a still body will continue to be still whenever the effect of the gravity is removed; instead the observations suggest that a still body will have a velocity different from 0 after a limited exposure to a gravitational field. The gravity can only be a force, coherently with the classical definition of force. Returning to satellites, if the gravitational force was apparent, we wouldn't observe the typical motion of the satellites around the planets, we would have circular trajectories which would be parallel and at the same time incident with the "right lines" of the near space, which doesn't make sense... The coherence is a principle of reality, the description of the gravitation must be coherent with all the rest...
I am extremely interested in physics but as I get deeper into the field the math and concepts start to elude me. I am grateful that there are folks like Don Lincoln that can help explain the subject!
Great explanation, as an ex science teacher I really appreciate your answer. People so often shoot from the hip without realising how little they really know!
When he overviews several theories and the result is "we just don't know" somehow it feels so satisfying. It's like he is the only person out there who really gets it, and gives it to us straight. "It's complicated" lol
@Noelle Leger As a layman watching a few of these videos , my understanding was its earth moving towards the free falling object at 9.8m/s, but how do you make sense of that when considering all the directions of a sphere?
@Noelle Leger I'm thinking of the rocket example used in Veritasium's "gravity is not a force" video. i.e When standing on earth, we are being pushed up. To rephrase my question a little, how can the earth be accelerating in all directions at once? or I have misunderstood the theory. Thanks
@Noelle Leger The ultimate mathematical unification (AND UNDERSTANDING) of physics/physical experience combines, BALANCES, AND includes opposites. The BALANCE of what is gravity WITH what is inertia/INERTIAL RESISTANCE requires and involves TIME AND time dilation ON/IN BALANCE, AS gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); AS this CLEARLY explains the fourth dimension; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. INSTANTaneity is fundamental to what are TIME AND time dilation ON/IN BALANCE. Accordingly, ON BALANCE, INSTANTaneity is fundamental to what is the FULL and proper understanding of physics/physical experience; AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE. What is GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. What is E=MC is taken directly from F=ma, AS the rotation of WHAT IS THE MOON matches the revolution; AS the stars AND PLANETS are POINTS in the night sky. Great. INDEED, c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. “Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY, AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). A given PLANET (including what is THE EARTH) sweeps out equal area in equal TIME. Great. What is E=MC is taken directly from F=ma. Consider TIME AND time dilation ON/IN BALANCE. INDEED, consider what is THE EYE ON BALANCE !!! Notice WHAT IS the fully illuminated AND setting/WHITE MOON ON BALANCE !!! NOW, consider what is the TRANSLUCENT AND BLUE sky ON BALANCE !!! So, consider what is the orange AND setting Sun ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/as) what is GRAVITATIONAL force/ENERGY, AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE. Consider TIME AND time dilation ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE). GREAT !!!! BALANCE AND completeness go hand in hand. Carefully consider, ON BALANCE, why and how it is that there is something instead of nothing !!!! By Frank Martin DiMeglio
I only discovered Dr. Lincoln about six months ago. Still working my way through his amazing library. Please keep up the great work, sir! You are greatly appreciated!
I am a retired Biology Teacher. Believe it or not, I have watched DOZENS of TH-cam physics videos... just trying to understand one tiny little bit of what 'gravity' is. Dr. Don... after watching your video I GET IT NOW!!! Woohoo. Great explanation. It only took me 42 YEARS (!) of trying, to finally understand. A million thanks!!! (I hope you don't let rude viewers change your teaching style. It is OH SO EASY to criticize using this 'Comments' format. Some people watch, just looking to cause grief.)
I am in my sophomore year of highschool and Im thinking i want to be an astrophysicist. Even for me, someone with little physics know-how, this was extremely understandable. I applaud you for your ability to explain so well in such a simple manner.
th-cam.com/video/V9xUQWo4vN0/w-d-xo.html She types on a smartphone with its silicon field effect transistors with their gates constantly forcing the energy bands in the PN junctions to reduce to the point where electrons tunnel through the gap allowing current to flow and then the reverse of this in multiple billions on instances. All calculated out ahead from the results of labs all over the world.
th-cam.com/video/f9z67DohLis/w-d-xo.html The horizontal axis is the distance from the gate oxide. It vertical axis on the graph is energy in Volts V or more often Electron Volts eV
@Noelle Leger WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE). Consider TIME AND time dilation ON BALANCE. c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. In other words, WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider what is THE EARTH/ground ON BALANCE !! The stars AND PLANETS are POINTS in the night sky. The rotation of WHAT IS THE MOON matches the revolution, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider WHAT IS THE EYE ON BALANCE. Now, consider, ON BALANCE, what is the fully illuminated (AND setting/WHITE) MOON !!! So, ON BALANCE, consider what is the orange (AND setting) Sun !!! ON BALANCE, it is the SAME SIZE as WHAT IS THE EYE !!! CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME AND time dilation ON BALANCE. Indeed, WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. Now, notice what is the TRANSLUCENT AND BLUE sky ON BALANCE; AS what is THE EARTH is ALSO BLUE. GREAT !!! So, consider, ON BALANCE, why and how it is that there is something instead of nothing. (BALANCE AND completeness go hand in hand.) It ALL does CLEARLY make perfect sense ON BALANCE !!!! A given PLANET (including WHAT IS THE EARTH) sweeps out equal area in equal TIME, AS ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!!! GREAT !!! By Frank Martin DiMeglio Consider what is THE SUN. Consider what is THE EYE. The stars AND PLANETS are POINTS in the night sky. This CLEARLY explains and proves what is the fourth dimension. By Frank Martin DiMeglio
@@anthonyhargis6855 WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE). Consider TIME AND time dilation ON BALANCE. c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. In other words, WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider what is THE EARTH/ground ON BALANCE !! The stars AND PLANETS are POINTS in the night sky. The rotation of WHAT IS THE MOON matches the revolution, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider WHAT IS THE EYE ON BALANCE. Now, consider, ON BALANCE, what is the fully illuminated (AND setting/WHITE) MOON !!! So, ON BALANCE, consider what is the orange (AND setting) Sun !!! ON BALANCE, it is the SAME SIZE as WHAT IS THE EYE !!! CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME AND time dilation ON BALANCE. Indeed, WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. Now, notice what is the TRANSLUCENT AND BLUE sky ON BALANCE; AS what is THE EARTH is ALSO BLUE. GREAT !!! So, consider, ON BALANCE, why and how it is that there is something instead of nothing. (BALANCE AND completeness go hand in hand.) It ALL does CLEARLY make perfect sense ON BALANCE !!!! A given PLANET (including WHAT IS THE EARTH) sweeps out equal area in equal TIME, AS ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!!! GREAT !!! By Frank Martin DiMeglio Consider what is THE SUN. Consider what is THE EYE. The stars AND PLANETS are POINTS in the night sky. This CLEARLY explains and proves what is the fourth dimension. By Frank Martin DiMeglio
@@marioluna2957 WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! BALANCE AND completeness go hand in hand. GREAT !!! WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. (WHAT IS E=MC2 IS dimensionally consistent.) Consider what is the man (AND THE EYE ON BALANCE) who IS standing on WHAT IS THE EARTH/ground, AS touch AND feeling BLEND; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! BALANCE AND completeness go hand in hand. WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS “mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY; AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). INDEED, GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! The stars AND PLANETS are POINTS in the night sky. WHAT IS E=MC2 IS dimensionally consistent !!! Accordingly, ON BALANCE, THE PLANETS (including what is THE EARTH) sweep out equal areas in equal times. Consider TIME (AND time dilation) ON BALANCE. WHAT IS E=MC2 is taken directly from F=ma, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent !!! CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME (AND time dilation) ON BALANCE. INDEED, TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! GREAT !!! ACCORDINGLY, ON BALANCE, the rotation of WHAT IS THE MOON matches the revolution. GREAT !!! WHAT IS E=MC2 IS dimensionally consistent. GREAT !!! It is a very great truth that the SELF represents, FORMS, and experiences a COMPREHENSIVE approximation of experience in general by combining conscious and unconscious experience. INDEED, the INTEGRATED EXTENSIVENESS of THOUGHT AND description is improved in the truly superior mind. BALANCE AND completeness go hand in hand. By Frank Martin DiMeglio
Just today I was thinking about the subjectivity of information. For example, if I was in an audience listening to someone speaking Cantonese, to me it would be data (I’m getting audible signals, but they don’t mean much to me), but to someone else who speaks it, it would be information. That could be another example of how the conceptual framework used affects the communication requirements.
Wow how intriguing! Almost sounds like a 4 dimensional concept? Could you give an example of this outside of your example of hearing sounds without understanding what the sounds mean as with your language example?
"This view is made possible for us by the teaching of experience as to the existence of a field of force, namely, the gravitational field, which possesses the remarkable property of imparting the same acceleration to all bodies." "Thus, according to the general theory of relativity, gravitation occupies an exceptional position with regard to other forces, ..." -- Albert Einstein, The Foundation of the General Theory of Relativity, 1916
It’s wonderful how much we have yet to understand- and the way you highlighted that here helps the creative thoughts flow so that we can reach those higher levels of understanding with less road blocks caused by closing our minds to even what we can’t conceive of yet. So many things in astrophysics in particular hinge on theories, not definite fact, and it seems to me some videos I’ve watched forget to remind the watcher of that. Thank you for the thought you put into this!
From Shakespeare's "What's in a name? That which we call a rose/ By any other name would smell as sweet", to Lincoln's "What's in a concept? That which we call gravity / By any other name would attract as well". Then from Duck Test "If it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck.", to common sense's "If it looks like a forces, attracts like a force, weights like a force, then we can't but see it as a force". I like these videos. Please continue to teach that it (all) depends on the relative model / concept. Then hopefully applying the principle of simplest choice. I read, few minutes ago, "In curved space time you have to accelerate just to remain stationary" explanation of relativistic gravity explanation. So it is about changing the meaning of "acceleration". But this way one can generate point-of-view models at free will, and their acceptance will depend upon the administration of conformism. So we are about self-referential models / concepts that to satisfy their logic change, at free will, the meanings of the words / sub-concepts. Dear Lincoln, yes "Physics is all!", but only under the condition it is free. The smell that I feel is that it was hijacked long ago, and that partial liberation is underway nowadays. So "Physics is all when freedom is all!". Based on shared premises (especially meanings), and free of rhetorical decoration.
I was expecting to be mildly disappointed. After several viewings, I am mildly disappointed in my expectations. Excellent explanation of difficult concepts. Thank you for giving the effort required to share such information about the nature of our reality.
I mean he got it wrong. If Newton was right then both the earth's acceleration upward and the gravitational force downward would cancel each other out at the earth's surface. But Einstein's field equations posit that gravity isn't a force, and it is the earth that is accelerating. The very thing that proves this is the use of an accelerometer on the earth's surface. It has a positive or non-zero read out of acceleration. When if Newton was right, it would be 0. So gravity isn't a force.
«This guy really knows how to address internet trolls. Maybe one of the best.» ---- Smart and wise gentleman. But here he is addressing parrots - that trolls are yet another phenomena that no other than ban can address.
I'm not calling myself a scientist until I get a degree in a science field. For now, I am an admirer of scientists and I appreciate the knowledge all of them bring.
It’s complicated but your answer is clear and concise. With it I feel like I don’t need to answer the question “Is gravity a force?”. But rather use our knowledge of gravity to explain the processes. I am a docent at DMNS.
Is science absolute ? I thought so, like so many people. With Dr Don s enlightenment, science is the ever perfecting process to get to the true picture of the fact. Before then, scientific observation maybe the observation in the theory of the beholder. Thanks Dr Don and keep up the good work.
I can imagine these know-it-all nerds who watches a lot of popular science videos only remembering catchy lines about gravity, without actually having gone through the ins and outs of relativity. But on the other hand, I also appreciate the willingness to challenge and argue, not blindly believing someone just because he is a trusty looking scientist, as long as its healthy and constructive of course.
*"The sight of those TH-cam comments trying to tell a literal physicist what gravity is...good lord."* ... We have already entered the age where the collective input from a broad range of humans will produce more answers than the intellectually gifted individuals operating in their specialized fields. A famous artist can paint wonderful works of art in his or her particular style, but an A.I. can create new art styles by pulling imagery from every known work of art that's available. You will soon start seeing "random people" answering hard questions that have stumped the most popular and highly regarded scientists, physicists, philosophers, and mathematicians of their times.
I just find it interesting that with all the brains we have here on earth, no one has an undisputed definition of what gravity is. Thanks for the video.
Of all the brains on Earth to date only three people mentioned in this video have majorly contributed to our understanding of it, in the 1700's and 1900's and, dare I add, without computers or AI!?!
I've seen another video trying to explain why gravity is not a force, and I could not understand it enough to remember. I understood Your explanation instantly. Thank You sir.
Wow because of this picture (3:38) and animation coupled with the explanation in the background, I can finally understand what the 2 dimensional space time fabric looks like in our 3 dimensional reality. I was never able “see” or comprehend how space time could be 2d in our 3d reality that we live and see things in. Now I can see how 2d space time fabric can exist within our 3d reality. I was never able to picture any of this with the classic flat picture of space time with the earth and sun sitting on top of what looks like a blanket with 2 balls (earth and sun) sinking into the flat surface represented as the space time 2 dimensional fabric that it indeed is. To put it another way, lol I never understood how a 2 dimensional plain could coexist and interact with the 3 dimensional reality we live in. NOW I need to try and see and understand what 4 dimensional looks like in our 3 dimensional reality and what it looks like interacting with 3d reality. Right now I can not picture how or what it looks like for 4d to exist within our 3d reality because right now it seems just as ghost like as how 2d existed in our 3d reality. Is it possible to even be able to see and picture it within 3d reality?
What a beautiful field of study. I'd love to study Physics and work in a place like you do, but that's impossible for me. In my country there's little to no investment in science so there's barely work for a Physicist rather than teaching and also, I'm too old for that... Thank you for letting me, at least, get a grasp of this wonderful knowledge. Your channel is, by far, the best in TH-cam and I've seen thousands of science videos in the last 10 years.
I think it definitely must be a force because space can’t distort itself. Distorting space(or anything) requires work. The gravitational effect is not the force itself but it is indirectly caused by it.
Newton is majorly right and Einstein and his Professor have taken us up a bit of a cul-de-sac, there is universal time, there is also specific object time!?!
@@thomasherrin6798 Einstein's predictions have been verified over and over and over again. Your GPS wouldn't work if Einstein was wrong. Note that Dr. Lincoln said: Einstein's theory is incomplete. That doesn't mean you can't make real-world calculations
@Noelle Leger WHAT IS E=MC2 is CLEARLY consistent with the fourth dimension in/of/AS SPACE, AS the stars AND PLANETS are POINTS in the night sky; AS the rotation of WHAT IS THE MOON matches the revolution; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity ON/IN BALANCE; AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !! INDEED, consider WHAT IS THE EYE ON BALANCE; AS c squared CLEARLY (AND NECESSARILY) represents a dimension of SPACE ON BALANCE !! Consider TIME AND time dilation ON BALANCE !!!! Gravity AND ELECTROMAGNETISM energy are linked AND BALANCED opposites (ON BALANCE), AS the stars AND PLANETS are POINTS in the night sky. TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. I have CLEARLY proven and explained what is the fourth dimension. Magnificent. By Frank Martin DiMeglio
Love these videos, really gets you thinking. It’s pretty uplifting. Reminds me of when I was a kid walking out of a science class feeling like the world has changed a little because of my new knowledge. Such a cool feeling. Thank you
as a lay person , but bloody old - 80+ ,,, i strut on wondering vhot my fellow countryman Albert E. had in mind for WHAT would CAUSE the "Space-Thyme" distortions - Other than stating "Mass" .... .. in my book a Cause might very reasonably 'synonymizised' as a Force .... - In short : " No Force -No Cause " ( Just my simplistic but 'quite human' logic ) And as to my understanding , there ain't not all that much around ( us .. ) that we wouldn't believe to 'depend' on NO-CAUSE - other than 'our' ( and Einstein's -? ) idea of "God" , and his - or Stephen H.'s "singularity ( .. ies ) - ? So , i don't see how Mass - most bloody 'obviously' bends Space-Time evver so 'effor(ce)tly' ... ??? enlighten-me, por favor , please , bitte !!!
Actually he didn't clarify it, and that was the point. He explained that we can't definitively clarify it at this time. And it might never have a clarification from all points of view even when we do understand it better. (Sort of like the long standing debate over whether light is a particle or a wave. In the end we definitively decided.... both? Depends how you look at it. It definitely has properties of both!)
@@edwardofgreene He clarified why sometimes we say gravity is a force and sometimes we don't. It all depends upon which method, Newton's or Einstein's, we're using.
@@terryjwood but he's wrong - physics isn't about our feelings, it's about measurement. All measurements indicate and require that gravity cannot be a force.
It's way over my head, but I think Erik Verlinde did a lecture about it recently that's available on youtube. Erik Verlinde "Emergence of Gravity from Quantum Information: a Progress Report"
Why? Gravity is simply a Function ... as is space, time, Laws of Nature, matter & energy. All Systems are Functions ... with purpose, form, properties, processes & design ... which are INFORMATION that every function possesses to exist & to function. And information ... is an abstract construct .. that can only come from the Mind of an Intelligence. There is zero evidence that nature & natural processes can make & operate the simplest physical function .... 13.7 or 4 billion years ago .... or today. We know for a fact that Nature ... can not make & operate the simplest physical Function made by Man (Intelligence) ... like a lever, wedge, spring, nut & bolt, hammer & nail, ... cup, plate, knife & fork. A quantum particle, field & force ... are the currently known ... simplest Functions in the Universe ... with purpose, form, processes, properties & design. The Universe is the only known ISOLATED Thermodynamic System(function). All thermodynamic Systems .... originate from the surrounding System ... which must provide the space, time, Laws, matter, energy and INTELLIGENCE ... to exist & to function. And the Surrounding System ... of the Universe with time & NATURAL laws ... must be UNNATURAL, timeless & infinite ... otherwise it will be a Natural System(function) that originates from a surrounding System with an Intelligence that made it. You want to learn more about entropic gravity ... to be in awe of God's brilliant Creation right? lol.
Great explanation of whether or not gravity is a force. I'm confident once the physics is understood it will turn out to be very counterintuitive, which is why it has taken so long to figure out.
Its "counter intuitive because they are flat out wrong and their theories are nonsensical gibberish. Curved fabric of Spacetime" is 100% a mathematical construct, its abstract, so nothing in Physical reality is going to "follow a spacetime curvature". Gravity is a force, like magnetism. Simple as that and Einstein is full of crap. So is quantum nonsense.
@@easternhills1329 «Dunning-Kruger effect doing its thing.» ---- There's not such an effect. It was dismantled, soon after announced, by other researchers, as artefact (bias in premises, measure, repeatability, etc). Btw I knew that it was a bluff, before having read that they already demolished it, since the measure cannot be but subjective. Anyway, from what I remember, officially there were two problems - 1) absence of repeating 2) totally random answers gave the same results as obtained from their tests.
@noelleleger232 Einstein said not to take the geometric interpretation too literally. So he thought it was a force. Besides, how do you conserve energy if it's not a force?
@noelleleger232 I've seen the video. I'm not convinced. And why is it popular now to have rockets accelerate the elevator car? The rocket will reduce the mass of the car by hurling propellant away. Why not just use the traditional rope pulling the thing? I have also seen posts from a reliable person about how Einstein himself said not to take the geometrical view too seriously. This same person explained that you could view electromagnetism geometrically, except that you have different geometry based on different charges. With gravity, everything is affected, so you can have a single geometry describe everything. Also, how would you conserve energy that way, e.g.? And sorry, I'm not interested in any conspiracy theories about 9/11. I suppose you're next going to claim we didn't go to the moon. Or that JFK Jr. is coming back as a Republican.
Hi Don. As I understand it there are a few theoretical scientist working on thoughts about the link between entanglement and gravity. I think it will eventually lead to testable predictions. Have you got some thoughts in that direction?
Its not Testable. So a Wolfgang Pauli "Not Even Wrong" theory. The idea is that the Entanglement of Particles at beginning of the Universe has collected among Black Holes and this has some effect. Look up Leonard Susskind 2022 Oppenheimer Lecture on "Quantum Gravity". IMO this is the BEST theory out there. And Susskind straight up says his Math on Quantum Decoherence, the Momentum of Information spread within the Quantum Hologram equals Marco Gravity. Reality is a Hologram created by Quantum Particles and Waves that we cannot see or cohere. Therefore similar to a Technological Hologram the Quantum World creates the Reality we perceive similar to that. This happens because we cannot perceive the True Nature of Quantum Waves and what we call Wave Function Collapse occurs. When this occurs something starts it. Imagine poking a Hologram the Information of your Poke spreads throughout the Hologram. This is what happens in Reality. That information spread of Macro Things interacting with Quantum World. The momentum of that Interaction equals the Math of Newtonian Gravity. He has another lecture I have not watched yet. Funny enough its called Debunking Quantum Gravity. Which is interesting because its all the stuff I just said here. Guess he doesn't consider that "Quantum" but simply what Gravity is? I need to watch it for real. He even says it will be testable in Low Energy Labs soon. Guy is Next Level. We are Giants swatting a Dense Clot of Quantum Gnats swarming around us. With every Movement and Action rippling through these Swarms. You follow this Logic a Black Hole is simply when Energy gets to a Point when Waves cannot Exist any longer. So No Reality can Cohere.
Newtonian physics is .... Universal Functions This means everything is a Function ... with purpose, form, properties, processes & design ... and can only be made by an intelligence. Universal Functions ... is the hypothesis for Sir Issac Newton's Watchmaker Analogy (Observation) over 300 years ago ... and ... an Machine Analogy used by Theists to explain "Intelligent Design." And the Function, Intelligence, Mind Categories ... as well as the origin of any THERMODYNAMIC System .... proves the Universe & Life ... are Functions, composed entirely of Functions and were made by an UNNATURAL Intelligence in a UNNATURAL surrounding System that is timeless & infinite. Quantum particles, fields & forces ... atoms, elements, compounds, molecules, ... chemical & nuclear reactions ... space, time, Laws of Nature, matter & energy ... are all Functions .... with purpose, form, properties, processes & design. There is ZERO evidence ... that nature natural processes can make the simplest physical function .... 13.7 or 4 billion years ago ... or ... today. We know for a fact ... that nature & natural processes ... can never make & operate the simplest physical function made by Man ( Intelligence) ... like the lever, wedge, spring, nut, bolt, nail, hammer, axe, shovel, wheel, .... cup, plate, knife & fork. Newtonian physics ... is Universal Functions. Science is a method (function) ... created by Man( function) ... to explain natural Phenomena(functions) ... rely completely of fixed Laws of nature, space, time, matter & energy which are all Functions. What the hell up and stop believing the fairy tales from religious zealots with PhDs about their Almighty Mother Nature & the Holy Natural Processes. A religion ... is simply a man made BELIEF system .... in someone or something ... responsible for the Universe, Life & existence/reality. Theists ... have a firm belief in someone (the gods of UNNATURAL intelligence). Atheists ... have a firm belief in something (Natural processes). And again ... Science is simply a method to EXPLAIN natural processes ( functions) based on fixed Laws of Nature(functions). Gravity .. if s function ... composed entirely of interacting functions ... that include at least mass, velocity & radius ... at the Cosmic or Macro level as Newton only 17th Century knowledge of the space, time, Laws of Nature, matter & energy of the Universe. And Newton did not realize everything, including Life, is a function composed entirely of INTERACTION functions.
@/O/ The ultimate mathematical unification (AND UNDERSTANDING) of physics/physical experience combines, BALANCES, AND includes opposites. The BALANCE of what is gravity WITH what is inertia/INERTIAL RESISTANCE requires and involves TIME AND time dilation ON/IN BALANCE, AS gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); AS this CLEARLY explains the fourth dimension; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. INSTANTaneity is fundamental to what are TIME AND time dilation ON/IN BALANCE. Accordingly, ON BALANCE, INSTANTaneity is fundamental to what is the FULL and proper understanding of physics/physical experience; AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE. What is GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. What is E=MC is taken directly from F=ma, AS the rotation of WHAT IS THE MOON matches the revolution; AS the stars AND PLANETS are POINTS in the night sky. Great. INDEED, c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. “Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY, AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). A given PLANET (including what is THE EARTH) sweeps out equal area in equal TIME. Great. What is E=MC is taken directly from F=ma. Consider TIME AND time dilation ON/IN BALANCE. INDEED, consider what is THE EYE ON BALANCE !!! Notice WHAT IS the fully illuminated AND setting/WHITE MOON ON BALANCE !!! NOW, consider what is the TRANSLUCENT AND BLUE sky ON BALANCE !!! So, consider what is the orange AND setting Sun ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/as) what is GRAVITATIONAL force/ENERGY, AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE. Consider TIME AND time dilation ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE). GREAT !!!! BALANCE AND completeness go hand in hand. Carefully consider, ON BALANCE, why and how it is that there is something instead of nothing !!!! By Frank Martin DiMeglio
Nice nuanced take! One of my grad school professors said it’s even incorrect to describe the 4 forces of nature as forces. Opting rather to describe them as “interactions”
@@kylelochlann5053 see this is what i really dont get- the idea of a fundamental force makes sense as a force which is not reducable, but it doesnt make any sense to me to say that an "interaction" is irreducable - an interaction implies 2(or more things) which are interacting to produce an effect, like gravity or etc, & if thats the case calling it irreducable seems incoherent to me. Can anyone explain what im not getting here because this really bothers me.
@@ar4203 Sure. Let's start with a reducible interaction, say the interaction between two surfaces sliding past each other (a.k.a. the force of kinetic friction). Is this friction force reducible to a more general interaction? Yes, friction is a function of the normal component of the contact force, f=μN. We can then ask if contact forces, the interaction between two surface more generally, is reducible to more general interactions. Yes, contact forces are dependent on the electromagnetic interaction. Here's where it becomes irreducible - we cannot express the interaction between charged particles in anything more general, or any other type of interaction. Basically that's the idea and we 4 types of interactions that cannot be explained in terms of anything else.
This website is quite useful to a layman like me. I've read a handful of books on subjects like cosmology and quantum physics, but it's difficult to find time to keep up to date on all the crazy theories out there! These videos may not make me an expert, but they at least make the topics comprehensible! Good job, Dr. Lincoln!
@Noelle Leger WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! BALANCE AND completeness go hand in hand. GREAT !!! WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. (WHAT IS E=MC2 IS dimensionally consistent.) Consider what is the man (AND THE EYE ON BALANCE) who IS standing on WHAT IS THE EARTH/ground, AS touch AND feeling BLEND; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! BALANCE AND completeness go hand in hand. WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS “mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY; AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). INDEED, GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! The stars AND PLANETS are POINTS in the night sky. WHAT IS E=MC2 IS dimensionally consistent !!! Accordingly, ON BALANCE, THE PLANETS (including what is THE EARTH) sweep out equal areas in equal times. Consider TIME (AND time dilation) ON BALANCE. WHAT IS E=MC2 is taken directly from F=ma, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent !!! CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME (AND time dilation) ON BALANCE. INDEED, TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! GREAT !!! ACCORDINGLY, ON BALANCE, the rotation of WHAT IS THE MOON matches the revolution. GREAT !!! WHAT IS E=MC2 IS dimensionally consistent. GREAT !!! It is a very great truth that the SELF represents, FORMS, and experiences a COMPREHENSIVE approximation of experience in general by combining conscious and unconscious experience. INDEED, the INTEGRATED EXTENSIVENESS of THOUGHT AND description is improved in the truly superior mind. BALANCE AND completeness go hand in hand. By Frank Martin DiMeglio
You're right Dr. Lincoln! "It's a force in geometry caused by buzzing of quantum particles". I would personally go for Strings and Gravitons, as Entropy seems to exotic to me. All best!
That deep dive into gravity (pun intended, Doc?) sounds like jumping into a rabbit hole that leads into a labyrinth wrapped in an iceberg. Looking foreward to it...
The "tautology" part is in reference to the fact whether gravity is a "force" depends on the definition of "force" that is being used (among other things). The definition of "force" that requires particle mediation and also presumes gravity isn't mediated by particles, doesn't really explain what gravity is because it doesn't explain what "space-time" even is, i.e., the thing that is "curved" and is thus perceived as "gravity". But, a an alternate definition of "force" that doesn't require particle mediation would include gravity as a "force". Thus, the tautology, opposite tautologies, depending on the definition of "force".
Serious question: given the curvature of light by mass and that photons have zero rest mass and not affected by gravity, doesn't that lend more credence to Relativity's curves spacetime explanation?
1-In which direction this "space bending" is observed and meassured? On the graphs the physicists are shoving one distinguished direction (usually down). 2-All physical meassurements ,which created basis for the theory of quantum gravity were obtained via the devices, made of the atomic matter. So it could be giving the result, which is biased in the most subtle level - due to its atomic structure. Stary
I lean more to the theory that gravity is an attractive accelerating force rather than a distortion of space. Newton's gravitational laws did not explain the elliptical paths of orbiting bodies. However, in 1915, they did not know that the sun was orbiting the center of our galaxy. Secondly, in 1915, electromagnetic waves were thought to have no known mass and should not be affected by gravity. However, some articles claim that they do have a mass. If so, they would be affected by a strong gravitational force, no called "lensing". One last claim that I've heard in many presentations: "Mass slows time". Gravity is an accelerating attractive force that is active on all mass. Gravity would slow down any measurement of time from a simple watch to an atomic clock. Great Presentation! Thanks.
Einstein _predicted_ in 1915 that light should be affected by a strong gravitational field exactly because in his model gravity is not about mass but about motion in curved spacetime. Everything follows that curvature, mass or not. That was actually the first test they did. The "Eddington experiment" confirmed light bending around the sun as predicted by Einstein. We have tested for the mass of light extensively and all results are consistent with zero.
Dr. Lincoln, Whether gravity is a tug between masses, a distortion of space by a massive object or an exchange of gravitons wouldn't all of these require a constant expenditure of energy by the massive object? Where does the energy come from? Wouldn't the mass eventually have to evaporate as it was converted to energy?
Great video. One question - does the "force" act on space itself to cause the curvature? i.e. against a tension (so that space "snaps back" to straight line cartesian space once the mass is removed?). Trying to understand if gravity is a force, but acting on space itself rather than directly on the bodies/masses involved...?
I think it’s obvious that once the object disappears from the place it resided in the 2 dimensional space time fabric that it is no longer pulling that fabric. This is simply what happens as the sun, earth, est. est. move through space. The place were the object is no longer occupying causes the space fabric to go back to its original state ie: no more object in that spot to manipulate the space time fabric. If gravity kept effecting the space the object no longer resides means there would be gravity in a place were no object is placed and space time fabric would pull objects towards an empty spot in space and we already know that, that does not happen.
Great videos Don. This puzzles me: the 'force' of gravity depends on the distance between the centres of the two masses, squared. But when those two masses are touching, like a person on the Earth, it does not make sense to me. Because the distance is squared, the nearest part of the Earth must have a much greater effect than the furthest part of the Earth. Consequently, the 'centre' of the gravitational effect must be closer than the centre of the Earth. What am I missing?
I love examples of gravitational lensing because they seem to support relativity in a very obvious way, but the idea that some mass could somehow "pull" on empty space still makes me wonder "how?". Great video!
except that based on Newton's equations, the downward force of gravity and the upward acceleration of the earth would cause both forces to cancel out. In Einstein's field equations, gravity isn't a force and only the earth is accelerating upward, and the acceleration is 9.8 m/s^2. The thing that proves Einstein's posit that gravity isn't a force is the use of an accelerometer on earth's surface. It reads out that the earth is accelerating. But if Newton were right then the accelerometer wouldn't read out anything. It would be zero. So gravity isn't a force.
imo, whether gravity should be considered a force is in the same group as things like the centrifugal force: it depends on what you're doing. For complex orbital maneuvers it can be more helpful to think about gravity in terms of curved paths through spacetime, but when talking about how it affects people and mountains standing on a planet it's more useful to think about it as a force; much like how whether the centrifugal force should be considered to be one depends on whether you want to describe something released from a spinning wheel or someone sitting in a centrifuge
Merriam Webster is round-about in its definition of Force. Force is basic & fundamental. Its succinct definition is - Force is proportional (symbolised ∝) to the rate of change of momentum. This, of course, introduces a constant of proportionality between Force on one side as well as momentum & its change-rate on the right hand side - depending on a preferred units-system for use. The practical aspect is one worthy of a look. The proportionality constant can be reduced to equality (symbolised =) depending upon our choice of units used (length, mass & time), that was quite arbitrary till date. Yet, our defining that unit as 1 Newton, makes the proportionality constant as 1. It is this effort of rationalising or normalising, that is on now.
“Be careful when you make a claim about what’s going on…”: thank you! Too many people do this, and it leads to misunderstanding. (Honestly, I’m only talking physics.)
"Matter tells spacetime how to curve, and curved spacetime tells matter how to move." This statement is a simplified explanation of the fundamental idea behind Einstein's theory of general relativity, which describes gravity as the curvature of spacetime. According to this theory, matter and energy warp or curve the fabric of spacetime around them, creating the gravitational force that we experience as the pull of gravity. In turn, the curvature of spacetime determines how matter and energy move, following what is known as the geodesic equation. The idea is that the presence of matter or energy creates a distortion in the fabric of spacetime, which is felt by other matter and energy in the vicinity. The curvature of spacetime, therefore, tells matter how to move, by creating a gravitational force that pulls it towards the source of the curvature. This is sometimes referred to as the "gravitational field" created by the curvature of spacetime. In summary, matter and energy warp spacetime, and this curvature of spacetime creates a gravitational force that affects the motion of matter and energy.
I'm grateful for this rebuttal, it needed to be said. Given a precise definition of "force" and "gravity", it's trivial to answer the question yes no or maybe. But as you said, it all depends on the framework you're talking about. In a colloquial framework, gravity's attraction "forces" me towards the center of the earth. Under the framework of Newton, gravity causes masses to accelerate towards each other, and is therefore a "force" per F=MA. Under Einstein, gravity causes spacetime to warp and is not actually a "force". But we know for a fact that all three of these frameworks are only approximations of what gravity truly is. So the jury is certainly still out.
Thanks. Great video. Re Gravity? Who knows? Curve in Space/Time? Particles? I have shunted it into the corner of one of the many mysteries...I envy those who announce they understand gravity.
this video made more and more sense the closer it came to the end ;-) ............... In my mind matter creates vacuum in space, and vacuum pulls the surounding matter inn. ........... =? Entropic ?,.....
@@andrewpaulhart WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! BALANCE AND completeness go hand in hand. GREAT !!! WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. (WHAT IS E=MC2 IS dimensionally consistent.) Consider what is the man (AND THE EYE ON BALANCE) who IS standing on WHAT IS THE EARTH/ground, AS touch AND feeling BLEND; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! BALANCE AND completeness go hand in hand. WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS “mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY; AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). INDEED, GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! The stars AND PLANETS are POINTS in the night sky. WHAT IS E=MC2 IS dimensionally consistent !!! Accordingly, ON BALANCE, THE PLANETS (including what is THE EARTH) sweep out equal areas in equal times. Consider TIME (AND time dilation) ON BALANCE. WHAT IS E=MC2 is taken directly from F=ma, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent !!! CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME (AND time dilation) ON BALANCE. INDEED, TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! GREAT !!! ACCORDINGLY, ON BALANCE, the rotation of WHAT IS THE MOON matches the revolution. GREAT !!! WHAT IS E=MC2 IS dimensionally consistent. GREAT !!! It is a very great truth that the SELF represents, FORMS, and experiences a COMPREHENSIVE approximation of experience in general by combining conscious and unconscious experience. INDEED, the INTEGRATED EXTENSIVENESS of THOUGHT AND description is improved in the truly superior mind. BALANCE AND completeness go hand in hand. By Frank Martin DiMeglio
Another outstanding video! I love this: "...you're probably only partly right, and then only some of the time." That's on a par with Oliver Cromwell's "...think it possible that you may be mistaken." Or James Thurber's "Beware of half truths. You may have the wrong half." I had a physics professor (a high energy physicist, by the way) who used to joke that "the graviton is a spin 2 particle roughly the size of a basketball." 😁 My version of Betteridge's Law: "If the headline ends in a question mark, don't read the article."
People always say that gravity is a beach, which is weird, because beaches are tradionally horisontally-orientated. Anyway. Grwat vid, Fermi, as always! 😎👍
Such an interesting subject. I wish there was a better way to depict spacetime distortion. In the warped grid depiction, the grid lines bend toward the mass as you approach and then bend away on the other side. A mass following its geodesic and deflected by another mass doesn't warp back away like those lines. I also wish I understood more of Einstein's mechanisms. Momentum, force times time, is mv and is conserved. Kinetic energy, which is force times distance, is 1/2mv^2 and can be converted. If I understand, Einstein's rest energy is proportional to rest mass by a factor of c^2 - but if it's energy, why is it mv^2, not 1/2mv^2? Perhaps the answer isn't for a TH-cam comment stream. It's probably best found after a few years of college physics and more math than I currently understand. But it's interesting to think about. Life is richer by the musings.
I think, to put it simply, the warped grid is describing what and how a 2 dimensional reality can exist in our 3 dimensional reality. Before that grid animation/picture I could never understand how 2d could exist within a 3d realm. Until this I could only picture the two dimensions parallel with each other instead of coexisting within each other. Now I have that same problem with 4d now. I don’t understand how 4d could possibly exist inside the 2d/3d reality. I can only picture it being completely separate from 2d/3d as if it’s a completely separate universe then the one we are in. Before this I could not simply understand how a 2 dimensional plain could exist within the same plain as our 3d universe as if 2d could only be a totally separate type of reality/universe.
Two things seem certain about contemporary physics: 1) all definite questions have nebulous answers; and, 2) the probability of knowing anything is inversely proportional to the degree of enthusiasm you radiate for knowing something. :)
@Fermilab Dr. Lincoln, what has always troubled me is that when describing Einstein's relativistic framework, it is said that mass deforms space-time but no mechanism has been suggested (as far as I know, maybe I'm mistaken?). Is it possible that a force might be responsible for deforming space-time? How else can the deformity of space-time be explained? Asking for a friend ...
Are you also troubled by the mechanism by which electric charge affects the electric field in classical electrmagnetism? It is the same. There is none. It is a fundamental relationship.
People often discuss words as if they have a deep, profound meaning. "Force" is a concept that can be used to descripe certain aspects of certain kinds of phenomena. It is not "really" anything. We can say that gravity is an apparent force exactly like centrifugal force. The real force is then the floor pushing you up, causing you to accelerate in the free-fall frame of reference. You choose how you use concepts like force and then everything else relevant for the phenomena must follow the same definition so that everything works together. If you design a forklift, it is most convenient to think gravity as a force, because using curvature of space-time is more difficult for that purpose. But nothing is "really" a force. We don't know what anything is "really". We only know how things work on the level we can observe and one or two more fundamental levels. We don't know what quarks and gluons "really" are and how space-time is made.
Gravity is an acceleration into low pressure vortices into Counterspace. Mass is in Counterspace. Matter is in Space. Mediated to center of everything is Counterspace. Shows Space Matter and Counterspacial Mass. Momentum = Matter is accelerated, Mass follows. Matter is stopped, Mass continues in Counterspace. The Bullet Cluster Galaxy!
When I studied physics at University of Oslo in the late 1980s, I attended meetings in “the Free Evangelical Assembly” and at a meeting in 1985 there sat a man on the same row of pews as I did and when we rose to pray, he waved in the air with his right hand as he gave a short speech in tongues and then translated it, the message was: "With one word I put the stars in the sky and with one word I can ruin it all, but I speak softly to you." I hadn't seen him there before and I didn't see him again later either. So here the Lord quickly went from telling me that he created everything by his Word (Genesis.1), to speaking of my learning and understanding of it (Genesis 2 and the gospel of Christ, on the foundation of the gospel of Christ he spoke softly to me. In one word, he put the stars in the sky. It made me think that physicists are trying to unite the fundamental forces into one force. They are still trying to do that, but it seems impossible to include gravity. This shows again that modern cosmology fits with what is written in the Bible. The prophets said long ago that the planets were not gods and modern science confirmed it, that’s how it started. So what about psychology and biology. Most of the evolution theory has been confirmed, but some of it is not really science but nature philosophy. How to answer questions like, how to make development, in which direction should it go, how to use our mind in contructive thinking, when and how to use power make progress? What about free will? Then it is good to know that God gave us the correct answer to this, because he loved the world so much that he sent his only Son to the word, so that everyone that believe in him shall not perish, but have eternal life. Everyone that received him, he gave the right to become children of God, borne by the Holy Spirit. And what is borne by the spirit is spirit. It comes from heaven and by receiving it we are already part of the new creation, society and world that God creates.
Funny, I'm just reading a great book called 'A Short History of Nearly Everything' by Bill Bryson, and he discusses how gravity is not a 'force', but rather a result of the bending of space by a given mass.
Everyone always says that Newton's equation is F=ma, but if you really look at the Principia, Newton really relayed more that force is change of momentum as compared to change of time (F=dp/dt), as well as giving us the math to really understand this (calculus). This is true genius, and conforms even with special relativity.
It does conform with special Relativity if you use the relativistic definitely for p. The issue is that gravity does _not_ conform with special Relativity because mass density and it's effects are not Lorentz invariant. That is why special Relativity does not describe gravity and we need general Relativity. And here gravity does not cause a change in the proper relativistic momentum.
I think the problem is language and our imperfect definitions. Gravity isn't a force like viruses aren't alive and like Pluto isn't a planet. What we call something doesn't affect what they are. It affects how we think of them.
It is a consequence/result/by-product of aether flow! All matter/compressed aether, creates a negative pressure zone in uncompressed aether/space and a pressure gradient is formed. The pressure is top-down as is the flow. The larger the mass of matter, the greater the pressure gradient.
That’s fantastic, the significant thing you’ve just said is that ‘It’s like what’s going on between you and your ex….it’s complicated’ very very pertinent after my yesterday; my goodness!
Can a thing of no substance be distorted or bent? Can a thing of substance be distorted or bent absent a force acting upon it? If mass bends (curves) space, then mass is exerting a force on space. The same applies to time. I suspect that quantum gravity is the inherent force of causation. I would use the nomenclature “Causatron” to describe the force carrier particle. Mass emits a Causatron that modifies the direction (path) of causation.
How can we pursue gravity "particle-like" explanations when you need a space-time backdrop to describe it, but gravity itself IS the backdrop? That's like saying you are describing the backdrop operating on itself? Or it's like saying describing x-y-z coordinates influencing the behavior of x-y-z coordinates?
So much respect for this man. The best explanations, sturdy, reliable, without long narrations or drama, but not boring either!
WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE). Consider TIME AND time dilation ON BALANCE. c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. In other words, WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider what is THE EARTH/ground ON BALANCE !! The stars AND PLANETS are POINTS in the night sky. The rotation of WHAT IS THE MOON matches the revolution, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider WHAT IS THE EYE ON BALANCE. Now, consider, ON BALANCE, what is the fully illuminated (AND setting/WHITE) MOON !!! So, ON BALANCE, consider what is the orange (AND setting) Sun !!! ON BALANCE, it is the SAME SIZE as WHAT IS THE EYE !!! CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME AND time dilation ON BALANCE. Indeed, WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. Now, notice what is the TRANSLUCENT AND BLUE sky ON BALANCE; AS what is THE EARTH is ALSO BLUE. GREAT !!! So, consider, ON BALANCE, why and how it is that there is something instead of nothing. (BALANCE AND completeness go hand in hand.) It ALL does CLEARLY make perfect sense ON BALANCE !!!! A given PLANET (including WHAT IS THE EARTH) sweeps out equal area in equal TIME, AS ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!!! GREAT !!!
By Frank Martin DiMeglio
Consider what is THE SUN. Consider what is THE EYE. The stars AND PLANETS are POINTS in the night sky. This CLEARLY explains and proves what is the fourth dimension.
By Frank Martin DiMeglio
What if a random dude, with great imagination and the ability to understand and visualize how mechanisms work knows what is gravity? What if his answer is agreed by math, observations, theory and the reality and has implications on everything, from transport to energy production and matter manipulation?
I'm that guy & if I get 10k likes to my account, I will make a video explaining what gravity is in such a way that even 7 years old's will understand.
ps to anybody wondering why I want followers first: I've spent too much time and energy on this question to give the answer away for free.
@@to-rome You kinda sound like an a$$hole tbh
"I'm partly right, some of the time" would make a great t-shirt slogan.
Talking like he does in this video, he is not a scientist.
I am a retired physicist pushing 80 years old. Whenever I see and hear this guy I am delighted to be here!
@Noelle Leger gravity is just the effect caused by energy(mass) . The smaller space energy is kept in the higher the pit hole created by mass.(Einstein theory ) ___________Light,all particles are waves . ___________imagine a straight rope 🪢. U put energy and make it go up and down quickly and a particle with hight equal to the energy you put in is created and travells in the Rope 🪢 in the speed of light 🕯️.lol
The ultimate mathematical unification (AND UNDERSTANDING) of physics/physical experience combines, BALANCES, AND includes opposites. The BALANCE of what is gravity WITH what is inertia/INERTIAL RESISTANCE requires and involves TIME AND time dilation ON/IN BALANCE, AS gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); AS this CLEARLY explains the fourth dimension; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. INSTANTaneity is fundamental to what are TIME AND time dilation ON/IN BALANCE. Accordingly, ON BALANCE, INSTANTaneity is fundamental to what is the FULL and proper understanding of physics/physical experience; AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE.
What is GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. What is E=MC is taken directly from F=ma, AS the rotation of WHAT IS THE MOON matches the revolution; AS the stars AND PLANETS are POINTS in the night sky. Great. INDEED, c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. “Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY, AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). A given PLANET (including what is THE EARTH) sweeps out equal area in equal TIME. Great. What is E=MC is taken directly from F=ma. Consider TIME AND time dilation ON/IN BALANCE. INDEED, consider what is THE EYE ON BALANCE !!! Notice WHAT IS the fully illuminated AND setting/WHITE MOON ON BALANCE !!! NOW, consider what is the TRANSLUCENT AND BLUE sky ON BALANCE !!! So, consider what is the orange AND setting Sun ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/as) what is GRAVITATIONAL force/ENERGY, AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE. Consider TIME AND time dilation ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE). GREAT !!!!
BALANCE AND completeness go hand in hand. Carefully consider, ON BALANCE, why and how it is that there is something instead of nothing !!!!
By Frank Martin DiMeglio
@@bing43 the satellites are the prove of the opposite: if there isn't a force, there isn't an acceleration, which means that a still body will continue to be still whenever the effect of the gravity is removed; instead the observations suggest that a still body will have a velocity different from 0 after a limited exposure to a gravitational field. The gravity can only be a force, coherently with the classical definition of force. Returning to satellites, if the gravitational force was apparent, we wouldn't observe the typical motion of the satellites around the planets, we would have circular trajectories which would be parallel and at the same time incident with the "right lines" of the near space, which doesn't make sense... The coherence is a principle of reality, the description of the gravitation must be coherent with all the rest...
Are you pushing 80, or is 80 pulling you?
@Noelle Leger Uhhh, what?
I am extremely interested in physics but as I get deeper into the field the math and concepts start to elude me. I am grateful that there are folks like Don Lincoln that can help explain the subject!
Great explanation, as an ex science teacher I really appreciate your answer. People so often shoot from the hip without realising how little they really know!
Very accurate claim
I appreciate his effort to be impartial and objective in his explanations.
When he overviews several theories and the result is "we just don't know" somehow it feels so satisfying. It's like he is the only person out there who really gets it, and gives it to us straight. "It's complicated" lol
"Theory" comes after Experimentation validating the Cause of an Effect observed in Nature/Physical Reality.
@Noelle Leger As a layman watching a few of these videos , my understanding was its earth moving towards the free falling object at 9.8m/s, but how do you make sense of that when considering all the directions of a sphere?
There are lots of other space youtubers who admit we don't know.
@Noelle Leger I'm thinking of the rocket example used in Veritasium's "gravity is not a force" video. i.e When standing on earth, we are being pushed up.
To rephrase my question a little, how can the earth be accelerating in all directions at once? or I have misunderstood the theory. Thanks
@Noelle Leger The ultimate mathematical unification (AND UNDERSTANDING) of physics/physical experience combines, BALANCES, AND includes opposites. The BALANCE of what is gravity WITH what is inertia/INERTIAL RESISTANCE requires and involves TIME AND time dilation ON/IN BALANCE, AS gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); AS this CLEARLY explains the fourth dimension; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. INSTANTaneity is fundamental to what are TIME AND time dilation ON/IN BALANCE. Accordingly, ON BALANCE, INSTANTaneity is fundamental to what is the FULL and proper understanding of physics/physical experience; AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE.
What is GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. What is E=MC is taken directly from F=ma, AS the rotation of WHAT IS THE MOON matches the revolution; AS the stars AND PLANETS are POINTS in the night sky. Great. INDEED, c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. “Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY, AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). A given PLANET (including what is THE EARTH) sweeps out equal area in equal TIME. Great. What is E=MC is taken directly from F=ma. Consider TIME AND time dilation ON/IN BALANCE. INDEED, consider what is THE EYE ON BALANCE !!! Notice WHAT IS the fully illuminated AND setting/WHITE MOON ON BALANCE !!! NOW, consider what is the TRANSLUCENT AND BLUE sky ON BALANCE !!! So, consider what is the orange AND setting Sun ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/as) what is GRAVITATIONAL force/ENERGY, AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE. Consider TIME AND time dilation ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE). GREAT !!!!
BALANCE AND completeness go hand in hand. Carefully consider, ON BALANCE, why and how it is that there is something instead of nothing !!!!
By Frank Martin DiMeglio
Thank you Don, for the time , effort and dedication to the topic you provide us all with in these vids.
I only discovered Dr. Lincoln about six months ago. Still working my way through his amazing library. Please keep up the great work, sir! You are greatly appreciated!
I am a retired Biology Teacher. Believe it or not, I have watched DOZENS of TH-cam physics videos... just trying to understand one tiny little bit of what 'gravity' is. Dr. Don... after watching your video I GET IT NOW!!! Woohoo. Great explanation. It only took me 42 YEARS (!) of trying, to finally understand. A million thanks!!! (I hope you don't let rude viewers change your teaching style. It is OH SO EASY to criticize using this 'Comments' format. Some people watch, just looking to cause grief.)
So what is it?
Yes, what is Gravity, other than whatever one imagines it to be?
Really??
😂A Biology Teacher and it only took you 42 years eh? I guess, I have a very long journey ahead, maybe not.
I am in my sophomore year of highschool and Im thinking i want to be an astrophysicist. Even for me, someone with little physics know-how, this was extremely understandable. I applaud you for your ability to explain so well in such a simple manner.
Another outstanding video. Great presentation of why this issue is more complicated than it may seem at first.
Excellent, showing us stuff we wouldn't even know to look for!
@@kx4532 I doubt physics exists.
@@faisafarrah9043 wut
th-cam.com/video/V9xUQWo4vN0/w-d-xo.html
She types on a smartphone with its silicon field effect transistors with their gates constantly forcing the energy bands in the PN junctions to reduce to the point where electrons tunnel through the gap allowing current to flow and then the reverse of this in multiple billions on instances. All calculated out ahead from the results of labs all over the world.
th-cam.com/video/f9z67DohLis/w-d-xo.html
The horizontal axis is the distance from the gate oxide. It vertical axis on the graph is energy in Volts V or more often Electron Volts eV
I love how you describe scientific debates. You are an A+ educator!!!
@Noelle Leger WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE). Consider TIME AND time dilation ON BALANCE. c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. In other words, WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider what is THE EARTH/ground ON BALANCE !! The stars AND PLANETS are POINTS in the night sky. The rotation of WHAT IS THE MOON matches the revolution, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider WHAT IS THE EYE ON BALANCE. Now, consider, ON BALANCE, what is the fully illuminated (AND setting/WHITE) MOON !!! So, ON BALANCE, consider what is the orange (AND setting) Sun !!! ON BALANCE, it is the SAME SIZE as WHAT IS THE EYE !!! CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME AND time dilation ON BALANCE. Indeed, WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. Now, notice what is the TRANSLUCENT AND BLUE sky ON BALANCE; AS what is THE EARTH is ALSO BLUE. GREAT !!! So, consider, ON BALANCE, why and how it is that there is something instead of nothing. (BALANCE AND completeness go hand in hand.) It ALL does CLEARLY make perfect sense ON BALANCE !!!! A given PLANET (including WHAT IS THE EARTH) sweeps out equal area in equal TIME, AS ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!!! GREAT !!!
By Frank Martin DiMeglio
Consider what is THE SUN. Consider what is THE EYE. The stars AND PLANETS are POINTS in the night sky. This CLEARLY explains and proves what is the fourth dimension.
By Frank Martin DiMeglio
Always educational and hard to turn away from. Outstanding Professor!
Do should stop making people doubt physics
Santa Lincoln rocks👍
@Noelle Leger You hit the wrong reply button.
@@anthonyhargis6855 WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE). Consider TIME AND time dilation ON BALANCE. c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. In other words, WHAT IS E=MC2 IS SPACE AS what is gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider what is THE EARTH/ground ON BALANCE !! The stars AND PLANETS are POINTS in the night sky. The rotation of WHAT IS THE MOON matches the revolution, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!!! Indeed, consider WHAT IS THE EYE ON BALANCE. Now, consider, ON BALANCE, what is the fully illuminated (AND setting/WHITE) MOON !!! So, ON BALANCE, consider what is the orange (AND setting) Sun !!! ON BALANCE, it is the SAME SIZE as WHAT IS THE EYE !!! CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME AND time dilation ON BALANCE. Indeed, WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. Now, notice what is the TRANSLUCENT AND BLUE sky ON BALANCE; AS what is THE EARTH is ALSO BLUE. GREAT !!! So, consider, ON BALANCE, why and how it is that there is something instead of nothing. (BALANCE AND completeness go hand in hand.) It ALL does CLEARLY make perfect sense ON BALANCE !!!! A given PLANET (including WHAT IS THE EARTH) sweeps out equal area in equal TIME, AS ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!!! GREAT !!!
By Frank Martin DiMeglio
Consider what is THE SUN. Consider what is THE EYE. The stars AND PLANETS are POINTS in the night sky. This CLEARLY explains and proves what is the fourth dimension.
By Frank Martin DiMeglio
@@marioluna2957 WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! BALANCE AND completeness go hand in hand. GREAT !!!
WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. (WHAT IS E=MC2 IS dimensionally consistent.) Consider what is the man (AND THE EYE ON BALANCE) who IS standing on WHAT IS THE EARTH/ground, AS touch AND feeling BLEND; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! BALANCE AND completeness go hand in hand.
WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS “mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY; AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). INDEED, GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! The stars AND PLANETS are POINTS in the night sky. WHAT IS E=MC2 IS dimensionally consistent !!! Accordingly, ON BALANCE, THE PLANETS (including what is THE EARTH) sweep out equal areas in equal times. Consider TIME (AND time dilation) ON BALANCE.
WHAT IS E=MC2 is taken directly from F=ma, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent !!!
CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME (AND time dilation) ON BALANCE.
INDEED, TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! GREAT !!!
ACCORDINGLY, ON BALANCE, the rotation of WHAT IS THE MOON matches the revolution. GREAT !!!
WHAT IS E=MC2 IS dimensionally consistent. GREAT !!!
It is a very great truth that the SELF represents, FORMS, and experiences a COMPREHENSIVE approximation of experience in general by combining conscious and unconscious experience. INDEED, the INTEGRATED EXTENSIVENESS of THOUGHT AND description is improved in the truly superior mind. BALANCE AND completeness go hand in hand.
By Frank Martin DiMeglio
Thanks for this video. Being careful when asserting something and not beeing too sure of us is often overlooked.
Just today I was thinking about the subjectivity of information. For example, if I was in an audience listening to someone speaking Cantonese, to me it would be data (I’m getting audible signals, but they don’t mean much to me), but to someone else who speaks it, it would be information. That could be another example of how the conceptual framework used affects the communication requirements.
Wow how intriguing! Almost sounds like a 4 dimensional concept? Could you give an example of this outside of your example of hearing sounds without understanding what the sounds mean as with your language example?
"This view is made possible for us by the teaching of experience as to the existence of a field of force, namely, the gravitational field, which possesses the remarkable property of imparting the same acceleration to all bodies."
"Thus, according to the general theory of relativity, gravitation occupies an exceptional position with regard to other forces, ..."
-- Albert Einstein, The Foundation of the General Theory of Relativity, 1916
General relativity is a failed model, by experiment.
It’s wonderful how much we have yet to understand- and the way you highlighted that here helps the creative thoughts flow so that we can reach those higher levels of understanding with less road blocks caused by closing our minds to even what we can’t conceive of yet. So many things in astrophysics in particular hinge on theories, not definite fact, and it seems to me some videos I’ve watched forget to remind the watcher of that. Thank you for the thought you put into this!
Dr. Don, Thanks for another enlightening video.😁
I had that question in mind for a few months now. Thank you for that enlightening explanation.
From Shakespeare's "What's in a name? That which we call a rose/ By any other name would smell as sweet", to Lincoln's "What's in a concept? That which we call gravity / By any other name would attract as well".
Then from Duck Test "If it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck.", to common sense's "If it looks like a forces, attracts like a force, weights like a force, then we can't but see it as a force".
I like these videos. Please continue to teach that it (all) depends on the relative model / concept. Then hopefully applying the principle of simplest choice.
I read, few minutes ago, "In curved space time you have to accelerate just to remain stationary" explanation of relativistic gravity explanation. So it is about changing the meaning of "acceleration". But this way one can generate point-of-view models at free will, and their acceptance will depend upon the administration of conformism. So we are about self-referential models / concepts that to satisfy their logic change, at free will, the meanings of the words / sub-concepts.
Dear Lincoln, yes "Physics is all!", but only under the condition it is free. The smell that I feel is that it was hijacked long ago, and that partial liberation is underway nowadays. So "Physics is all when freedom is all!". Based on shared premises (especially meanings), and free of rhetorical decoration.
I was expecting to be mildly disappointed. After several viewings, I am mildly disappointed in my expectations.
Excellent explanation of difficult concepts. Thank you for giving the effort required to share such information about the nature of our reality.
I mean he got it wrong. If Newton was right then both the earth's acceleration upward and the gravitational force downward would cancel each other out at the earth's surface. But Einstein's field equations posit that gravity isn't a force, and it is the earth that is accelerating. The very thing that proves this is the use of an accelerometer on the earth's surface. It has a positive or non-zero read out of acceleration. When if Newton was right, it would be 0. So gravity isn't a force.
This guy really knows how to address internet trolls. Maybe one of the best.
«This guy really knows how to address internet trolls. Maybe one of the best.»
----
Smart and wise gentleman. But here he is addressing parrots - that trolls are yet another phenomena that no other than ban can address.
I'm not calling myself a scientist until I get a degree in a science field. For now, I am an admirer of scientists and I appreciate the knowledge all of them bring.
🎉
It’s complicated but your answer is clear and concise. With it I feel like I don’t need to answer the question “Is gravity a force?”. But rather use our knowledge of gravity to explain the processes. I am a docent at DMNS.
Is science absolute ? I thought so, like so many people. With Dr Don s enlightenment, science is the ever perfecting process to get to the true picture of the fact. Before then, scientific observation maybe the observation in the theory of the beholder.
Thanks Dr Don and keep up the good work.
All that I can say is "May The Force Be With You Dr. Don"! 🤔🤔👍👍
Or, may the curvature of the space you're in always be in your favor.😃
We definitely should have released this video on May 4th.
That doesn't hold gravity!?!
Just made a gravity bong for science. There's definitely some mysterious force in action. Will report back after I have isolated source.
The sight of those TH-cam comments trying to tell a literal physicist what gravity is...good lord.
Edit: This wasn't supposed to blow up...
I can imagine these know-it-all nerds who watches a lot of popular science videos only remembering catchy lines about gravity, without actually having gone through the ins and outs of relativity. But on the other hand, I also appreciate the willingness to challenge and argue, not blindly believing someone just because he is a trusty looking scientist, as long as its healthy and constructive of course.
Appeal to authority
Anyone can tell anyone anything, funnily enough
*"The sight of those TH-cam comments trying to tell a literal physicist what gravity is...good lord."*
... We have already entered the age where the collective input from a broad range of humans will produce more answers than the intellectually gifted individuals operating in their specialized fields. A famous artist can paint wonderful works of art in his or her particular style, but an A.I. can create new art styles by pulling imagery from every known work of art that's available.
You will soon start seeing "random people" answering hard questions that have stumped the most popular and highly regarded scientists, physicists, philosophers, and mathematicians of their times.
@@AverageAlien Appealing to authority is only a fallacy when that authority isn't relevant to the topic at hand.
I just find it interesting that with all the brains we have here on earth, no one has an undisputed definition of what gravity is. Thanks for the video.
Of all the brains on Earth to date only three people mentioned in this video have majorly contributed to our understanding of it, in the 1700's and 1900's and, dare I add, without computers or AI!?!
@@thomasherrin6798 - That's the problem. They have "contributed" to our understanding but no one can actually nail it down. I find that amazing.
I've seen another video trying to explain why gravity is not a force, and I could not understand it enough to remember. I understood Your explanation instantly. Thank You sir.
I don't see how he made it any clearer lol
Very well done. I'd like to learn more about entropic models of gravity when you have the space-time.
Wow because of this picture (3:38) and animation coupled with the explanation in the background, I can finally understand what the 2 dimensional space time fabric looks like in our 3 dimensional reality. I was never able “see” or comprehend how space time could be 2d in our 3d reality that we live and see things in. Now I can see how 2d space time fabric can exist within our 3d reality. I was never able to picture any of this with the classic flat picture of space time with the earth and sun sitting on top of what looks like a blanket with 2 balls (earth and sun) sinking into the flat surface represented as the space time 2 dimensional fabric that it indeed is. To put it another way, lol I never understood how a 2 dimensional plain could coexist and interact with the 3 dimensional reality we live in.
NOW I need to try and see and understand what 4 dimensional looks like in our 3 dimensional reality and what it looks like interacting with 3d reality. Right now I can not picture how or what it looks like for 4d to exist within our 3d reality because right now it seems just as ghost like as how 2d existed in our 3d reality. Is it possible to even be able to see and picture it within 3d reality?
Oo yes, a deep dive into entropic gravity would be fabulous. The brutal weirdness of it makes it seem promising!
What a beautiful field of study. I'd love to study Physics and work in a place like you do, but that's impossible for me. In my country there's little to no investment in science so there's barely work for a Physicist rather than teaching and also, I'm too old for that... Thank you for letting me, at least, get a grasp of this wonderful knowledge. Your channel is, by far, the best in TH-cam and I've seen thousands of science videos in the last 10 years.
Amazing articulation. As a teacher, I find your lecture extremely lucid, and try to replicate in class.
Thanks!!
I think it definitely must be a force because space can’t distort itself. Distorting space(or anything) requires work. The gravitational effect is not the force itself but it is indirectly caused by it.
Yes, spacetime distorts itself, a non-linear aspect of the theory. In quantum parlance, the gravitational field couples to itself.
Newton is majorly right and Einstein and his Professor have taken us up a bit of a cul-de-sac, there is universal time, there is also specific object time!?!
@@thomasherrin6798 Einstein's predictions have been verified over and over and over again. Your GPS wouldn't work if Einstein was wrong.
Note that Dr. Lincoln said: Einstein's theory is incomplete. That doesn't mean you can't make real-world calculations
Thank you, Dr. Don! Wonderful video
@Noelle Leger WHAT IS E=MC2 is CLEARLY consistent with the fourth dimension in/of/AS SPACE, AS the stars AND PLANETS are POINTS in the night sky; AS the rotation of WHAT IS THE MOON matches the revolution; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity ON/IN BALANCE; AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !! INDEED, consider WHAT IS THE EYE ON BALANCE; AS c squared CLEARLY (AND NECESSARILY) represents a dimension of SPACE ON BALANCE !! Consider TIME AND time dilation ON BALANCE !!!! Gravity AND ELECTROMAGNETISM energy are linked AND BALANCED opposites (ON BALANCE), AS the stars AND PLANETS are POINTS in the night sky. TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. I have CLEARLY proven and explained what is the fourth dimension. Magnificent.
By Frank Martin DiMeglio
Love these videos, really gets you thinking. It’s pretty uplifting. Reminds me of when I was a kid walking out of a science class feeling like the world has changed a little because of my new knowledge. Such a cool feeling. Thank you
love that feeling; feeling like the world is somehow slightly more vast and wonderful than it was the hour before :)
3:37. Of all the videos and textbooks I've ever seen, this is the first to portray the bending of spacetime in 3 dimensions. Well done!
as a lay person , but bloody old - 80+ ,,, i strut on wondering vhot my fellow countryman Albert E. had in mind for WHAT would CAUSE the "Space-Thyme" distortions - Other than stating "Mass" .... .. in my book a Cause might very reasonably 'synonymizised' as a Force .... - In short : " No Force -No Cause " ( Just my simplistic but 'quite human' logic )
And as to my understanding , there ain't not all that much around ( us .. ) that we wouldn't believe to 'depend' on NO-CAUSE - other than 'our' ( and Einstein's -? ) idea of "God" , and his - or Stephen H.'s "singularity ( .. ies ) - ?
So , i don't see how Mass - most bloody 'obviously' bends Space-Time evver so 'effor(ce)tly' ... ???
enlighten-me, por favor , please , bitte !!!
But spacetime curvature equation was made with the use of intrinsic curvature and not extrinsic, so the 3D diagram is wrong.
I am a small time school teacher, this great GURU made me interested in life again. Thanks.
Thanks for clarifying this! I've wondered about this question for some time.
Actually he didn't clarify it, and that was the point. He explained that we can't definitively clarify it at this time. And it might never have a clarification from all points of view even when we do understand it better.
(Sort of like the long standing debate over whether light is a particle or a wave. In the end we definitively decided.... both? Depends how you look at it. It definitely has properties of both!)
@@edwardofgreene He clarified why sometimes we say gravity is a force and sometimes we don't. It all depends upon which method, Newton's or Einstein's, we're using.
@@terryjwood but he's wrong - physics isn't about our feelings, it's about measurement. All measurements indicate and require that gravity cannot be a force.
@@kylelochlann5053 Have you told him that?
@@terryjwood Every single time.
I want to hear more about entropic gravity. I don't think I have ever heard that brought up before, or at least don't remember any videos about it.
It's way over my head, but I think Erik Verlinde did a lecture about it recently that's available on youtube. Erik Verlinde "Emergence of Gravity from Quantum Information: a Progress Report"
@@grayaj23 thx
Samesies. It's cool to see I wasn't the only one who had their ears perked up by that.
Why? Gravity is simply a Function ... as is space, time, Laws of Nature, matter & energy.
All Systems are Functions ... with purpose, form, properties, processes & design ... which are INFORMATION that every function possesses to exist & to function.
And information ... is an abstract construct .. that can only come from the Mind of an Intelligence.
There is zero evidence that nature & natural processes can make & operate the simplest physical function .... 13.7 or 4 billion years ago .... or today.
We know for a fact that Nature ... can not make & operate the simplest physical Function made by Man (Intelligence) ... like a lever, wedge, spring, nut & bolt, hammer & nail, ... cup, plate, knife & fork.
A quantum particle, field & force ... are the currently known ... simplest Functions in the Universe ... with purpose, form, processes, properties & design.
The Universe is the only known ISOLATED Thermodynamic System(function).
All thermodynamic Systems .... originate from the surrounding System ... which must provide the space, time, Laws, matter, energy and INTELLIGENCE ... to exist & to function.
And the Surrounding System ... of the Universe with time & NATURAL laws ... must be UNNATURAL, timeless & infinite ... otherwise it will be a Natural System(function) that originates from a surrounding System with an Intelligence that made it.
You want to learn more about entropic gravity ... to be in awe of God's brilliant Creation right? lol.
Great explanation of whether or not gravity is a force. I'm confident once the physics is understood it will turn out to be very counterintuitive, which is why it has taken so long to figure out.
Its "counter intuitive because they are flat out wrong and their theories are nonsensical gibberish. Curved fabric of Spacetime" is 100% a mathematical construct, its abstract, so nothing in Physical reality is going to "follow a spacetime curvature". Gravity is a force, like magnetism. Simple as that and Einstein is full of crap. So is quantum nonsense.
Best statement ever: "You'll only be partly right, some of the time." I think the world would be a better place if everyone took that to heart!
Better but boring 😁
This is a wonderful video. The way you express these ideas in a simple way is amazing.
I like it when real physicists aren't so zealous as physics geeks.
Dunning-Kruger effect doing its thing.
@Noelle Leger Are you idiot or just pretend?
@@easternhills1329 «Dunning-Kruger effect doing its thing.»
----
There's not such an effect. It was dismantled, soon after announced, by other researchers, as artefact (bias in premises, measure, repeatability, etc). Btw I knew that it was a bluff, before having read that they already demolished it, since the measure cannot be but subjective. Anyway, from what I remember, officially there were two problems - 1) absence of repeating 2) totally random answers gave the same results as obtained from their tests.
@noelleleger232 Einstein said not to take the geometric interpretation too literally. So he thought it was a force. Besides, how do you conserve energy if it's not a force?
@noelleleger232 I've seen the video. I'm not convinced. And why is it popular now to have rockets accelerate the elevator car? The rocket will reduce the mass of the car by hurling propellant away. Why not just use the traditional rope pulling the thing?
I have also seen posts from a reliable person about how Einstein himself said not to take the geometrical view too seriously. This same person explained that you could view electromagnetism geometrically, except that you have different geometry based on different charges. With gravity, everything is affected, so you can have a single geometry describe everything.
Also, how would you conserve energy that way, e.g.?
And sorry, I'm not interested in any conspiracy theories about 9/11. I suppose you're next going to claim we didn't go to the moon. Or that JFK Jr. is coming back as a Republican.
Hi Don. As I understand it there are a few theoretical scientist working on thoughts about the link between entanglement and gravity. I think it will eventually lead to testable predictions. Have you got some thoughts in that direction?
Its not Testable. So a Wolfgang Pauli "Not Even Wrong" theory. The idea is that the Entanglement of Particles at beginning of the Universe has collected among Black Holes and this has some effect.
Look up Leonard Susskind 2022 Oppenheimer Lecture on "Quantum Gravity". IMO this is the BEST theory out there. And Susskind straight up says his Math on Quantum Decoherence, the Momentum of Information spread within the Quantum Hologram equals Marco Gravity. Reality is a Hologram created by Quantum Particles and Waves that we cannot see or cohere. Therefore similar to a Technological Hologram the Quantum World creates the Reality we perceive similar to that. This happens because we cannot perceive the True Nature of Quantum Waves and what we call Wave Function Collapse occurs. When this occurs something starts it. Imagine poking a Hologram the Information of your Poke spreads throughout the Hologram. This is what happens in Reality. That information spread of Macro Things interacting with Quantum World. The momentum of that Interaction equals the Math of Newtonian Gravity. He has another lecture I have not watched yet. Funny enough its called Debunking Quantum Gravity. Which is interesting because its all the stuff I just said here. Guess he doesn't consider that "Quantum" but simply what Gravity is? I need to watch it for real.
He even says it will be testable in Low Energy Labs soon. Guy is Next Level. We are Giants swatting a Dense Clot of Quantum Gnats swarming around us. With every Movement and Action rippling through these Swarms. You follow this Logic a Black Hole is simply when Energy gets to a Point when Waves cannot Exist any longer. So No Reality can Cohere.
@/O/ Isn't everything constantly getting entangled with its immediate surroundings? There's no special thing required to make it happen.
Newtonian physics is .... Universal Functions This means everything is a Function ... with purpose, form, properties, processes & design ... and can only be made by an intelligence.
Universal Functions ... is the hypothesis for Sir Issac Newton's Watchmaker Analogy (Observation) over 300 years ago ... and ... an Machine Analogy used by Theists to explain "Intelligent Design."
And the Function, Intelligence, Mind Categories ... as well as the origin of any THERMODYNAMIC System .... proves the Universe & Life ... are Functions, composed entirely of Functions and were made by an UNNATURAL Intelligence in a UNNATURAL surrounding System that is timeless & infinite.
Quantum particles, fields & forces ... atoms, elements, compounds, molecules, ... chemical & nuclear reactions ... space, time, Laws of Nature, matter & energy ... are all Functions .... with purpose, form, properties, processes & design.
There is ZERO evidence ... that nature natural processes can make the simplest physical function .... 13.7 or 4 billion years ago ... or ... today.
We know for a fact ... that nature & natural processes ... can never make & operate the simplest physical function made by Man ( Intelligence) ... like the lever, wedge, spring, nut, bolt, nail, hammer, axe, shovel, wheel, .... cup, plate, knife & fork.
Newtonian physics ... is Universal Functions.
Science is a method (function) ... created by Man( function) ... to explain natural Phenomena(functions) ... rely completely of fixed Laws of nature, space, time, matter & energy which are all Functions.
What the hell up and stop believing the fairy tales from religious zealots with PhDs about their Almighty Mother Nature & the Holy Natural Processes.
A religion ... is simply a man made BELIEF system .... in someone or something ... responsible for the Universe, Life & existence/reality.
Theists ... have a firm belief in someone (the gods of UNNATURAL intelligence).
Atheists ... have a firm belief in something (Natural processes).
And again ... Science is simply a method to EXPLAIN natural processes ( functions) based on fixed Laws of Nature(functions).
Gravity .. if s function ... composed entirely of interacting functions ... that include at least mass, velocity & radius ... at the Cosmic or Macro level as Newton only 17th Century knowledge of the space, time, Laws of Nature, matter & energy of the Universe. And Newton did not realize everything, including Life, is a function composed entirely of INTERACTION functions.
At very small distances, gravity might not act as "directed" (attraction vector) as we know it, and might act more randomly. That would be prediction.
@/O/ The ultimate mathematical unification (AND UNDERSTANDING) of physics/physical experience combines, BALANCES, AND includes opposites. The BALANCE of what is gravity WITH what is inertia/INERTIAL RESISTANCE requires and involves TIME AND time dilation ON/IN BALANCE, AS gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); AS this CLEARLY explains the fourth dimension; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. INSTANTaneity is fundamental to what are TIME AND time dilation ON/IN BALANCE. Accordingly, ON BALANCE, INSTANTaneity is fundamental to what is the FULL and proper understanding of physics/physical experience; AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE.
What is GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. What is E=MC is taken directly from F=ma, AS the rotation of WHAT IS THE MOON matches the revolution; AS the stars AND PLANETS are POINTS in the night sky. Great. INDEED, c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. “Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY, AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). A given PLANET (including what is THE EARTH) sweeps out equal area in equal TIME. Great. What is E=MC is taken directly from F=ma. Consider TIME AND time dilation ON/IN BALANCE. INDEED, consider what is THE EYE ON BALANCE !!! Notice WHAT IS the fully illuminated AND setting/WHITE MOON ON BALANCE !!! NOW, consider what is the TRANSLUCENT AND BLUE sky ON BALANCE !!! So, consider what is the orange AND setting Sun ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE), AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/as) what is GRAVITATIONAL force/ENERGY, AS the extension of what is SPACE is CLEARLY (AND NECESSARILY) electromagnetic/gravitational ON/IN BALANCE. Consider TIME AND time dilation ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE). GREAT !!!!
BALANCE AND completeness go hand in hand. Carefully consider, ON BALANCE, why and how it is that there is something instead of nothing !!!!
By Frank Martin DiMeglio
Nice nuanced take! One of my grad school professors said it’s even incorrect to describe the 4 forces of nature as forces. Opting rather to describe them as “interactions”
He is correct. A fundamental interaction is an irreducible phenomenon that may or not produce a physical acceleration.
@@kylelochlann5053 see this is what i really dont get- the idea of a fundamental force makes sense as a force which is not reducable, but it doesnt make any sense to me to say that an "interaction" is irreducable - an interaction implies 2(or more things) which are interacting to produce an effect, like gravity or etc, & if thats the case calling it irreducable seems incoherent to me. Can anyone explain what im not getting here because this really bothers me.
@@ar4203 Sure. Let's start with a reducible interaction, say the interaction between two surfaces sliding past each other (a.k.a. the force of kinetic friction). Is this friction force reducible to a more general interaction? Yes, friction is a function of the normal component of the contact force, f=μN. We can then ask if contact forces, the interaction between two surface more generally, is reducible to more general interactions. Yes, contact forces are dependent on the electromagnetic interaction. Here's where it becomes irreducible - we cannot express the interaction between charged particles in anything more general, or any other type of interaction. Basically that's the idea and we 4 types of interactions that cannot be explained in terms of anything else.
This website is quite useful to a layman like me. I've read a handful of books on subjects like cosmology and quantum physics, but it's difficult to find time to keep up to date on all the crazy theories out there! These videos may not make me an expert, but they at least make the topics comprehensible! Good job, Dr. Lincoln!
The best channel on physics
Thank you Dr Don as always excellent content.
@Noelle Leger WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! BALANCE AND completeness go hand in hand. GREAT !!!
WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. (WHAT IS E=MC2 IS dimensionally consistent.) Consider what is the man (AND THE EYE ON BALANCE) who IS standing on WHAT IS THE EARTH/ground, AS touch AND feeling BLEND; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! BALANCE AND completeness go hand in hand.
WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS “mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY; AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). INDEED, GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! The stars AND PLANETS are POINTS in the night sky. WHAT IS E=MC2 IS dimensionally consistent !!! Accordingly, ON BALANCE, THE PLANETS (including what is THE EARTH) sweep out equal areas in equal times. Consider TIME (AND time dilation) ON BALANCE.
WHAT IS E=MC2 is taken directly from F=ma, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent !!!
CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME (AND time dilation) ON BALANCE.
INDEED, TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! GREAT !!!
ACCORDINGLY, ON BALANCE, the rotation of WHAT IS THE MOON matches the revolution. GREAT !!!
WHAT IS E=MC2 IS dimensionally consistent. GREAT !!!
It is a very great truth that the SELF represents, FORMS, and experiences a COMPREHENSIVE approximation of experience in general by combining conscious and unconscious experience. INDEED, the INTEGRATED EXTENSIVENESS of THOUGHT AND description is improved in the truly superior mind. BALANCE AND completeness go hand in hand.
By Frank Martin DiMeglio
Now you're going to get a bunch of comments saying it's the bending of spacetime, and not just space. Clever content farming, Don!
You know our viewership so well...
I will do you one better. Spacetime isn't real. Time isn't real. And space doesn't bend, move, or warp.
Gravity is a force in GR... It forces you to learn math! 😁
You're right Dr. Lincoln! "It's a force in geometry caused by buzzing of quantum particles". I would personally go for Strings and Gravitons, as Entropy seems to exotic to me. All best!
In ordinary people's everyday life, considering/treating gravity as a force makes the most sense. Great video 👍👍👍
It's way more fun admitting that your weigh is only the centrifugal force of your body travelling in time on curved path... 😊
That deep dive into gravity (pun intended, Doc?) sounds like jumping into a rabbit hole that leads into a labyrinth wrapped in an iceberg. Looking foreward to it...
The "tautology" part is in reference to the fact whether gravity is a "force" depends on the definition of "force" that is being used (among other things). The definition of "force" that requires particle mediation and also presumes gravity isn't mediated by particles, doesn't really explain what gravity is because it doesn't explain what "space-time" even is, i.e., the thing that is "curved" and is thus perceived as "gravity". But, a an alternate definition of "force" that doesn't require particle mediation would include gravity as a "force". Thus, the tautology, opposite tautologies, depending on the definition of "force".
I am in love with entropic gravity. I can't wait to learn more about the topic. Thank you for this overview!
I ❤ the teacher who calmly teaches without yelling at his audience, like Neil... 😂😂😂
Serious question: given the curvature of light by mass and that photons have zero rest mass and not affected by gravity, doesn't that lend more credence to Relativity's curves spacetime explanation?
1-In which direction this "space bending" is observed and meassured? On the graphs the physicists are shoving one distinguished direction (usually down).
2-All physical meassurements ,which created basis for the theory of quantum gravity were obtained via the devices, made of the atomic matter. So it could be giving the result, which is biased in the most subtle level - due to its atomic structure.
Stary
I lean more to the theory that gravity is an attractive accelerating force rather than a distortion of space. Newton's gravitational laws did not explain the elliptical paths of orbiting bodies. However, in 1915, they did not know that the sun was orbiting the center of our galaxy.
Secondly, in 1915, electromagnetic waves were thought to have no known mass and should not be affected by gravity. However, some articles claim that they do have a mass. If so, they would be affected by a strong gravitational force, no called "lensing".
One last claim that I've heard in many presentations: "Mass slows time".
Gravity is an accelerating attractive force that is active on all mass. Gravity would slow down any measurement of time from a simple watch to an atomic clock.
Great Presentation! Thanks.
Einstein _predicted_ in 1915 that light should be affected by a strong gravitational field exactly because in his model gravity is not about mass but about motion in curved spacetime.
Everything follows that curvature, mass or not.
That was actually the first test they did. The "Eddington experiment" confirmed light bending around the sun as predicted by Einstein.
We have tested for the mass of light extensively and all results are consistent with zero.
Dr. Lincoln, Whether gravity is a tug between masses, a distortion of space by a massive object or an exchange of gravitons wouldn't all of these require a constant expenditure of energy by the massive object? Where does the energy come from? Wouldn't the mass eventually have to evaporate as it was converted to energy?
Great video. One question - does the "force" act on space itself to cause the curvature? i.e. against a tension (so that space "snaps back" to straight line cartesian space once the mass is removed?). Trying to understand if gravity is a force, but acting on space itself rather than directly on the bodies/masses involved...?
I think it’s obvious that once the object disappears from the place it resided in the 2 dimensional space time fabric that it is no longer pulling that fabric. This is simply what happens as the sun, earth, est. est. move through space. The place were the object is no longer occupying causes the space fabric to go back to its original state ie: no more object in that spot to manipulate the space time fabric. If gravity kept effecting the space the object no longer resides means there would be gravity in a place were no object is placed and space time fabric would pull objects towards an empty spot in space and we already know that, that does not happen.
Great videos Don. This puzzles me: the 'force' of gravity depends on the distance between the centres of the two masses, squared. But when those two masses are touching, like a person on the Earth, it does not make sense to me. Because the distance is squared, the nearest part of the Earth must have a much greater effect than the furthest part of the Earth. Consequently, the 'centre' of the gravitational effect must be closer than the centre of the Earth. What am I missing?
I love examples of gravitational lensing because they seem to support relativity in a very obvious way, but the idea that some mass could somehow "pull" on empty space still makes me wonder "how?".
Great video!
This question was troubling me for a long time. this video helped me a lot. Thank you so much Dr.Lincoln
except that based on Newton's equations, the downward force of gravity and the upward acceleration of the earth would cause both forces to cancel out. In Einstein's field equations, gravity isn't a force and only the earth is accelerating upward, and the acceleration is 9.8 m/s^2. The thing that proves Einstein's posit that gravity isn't a force is the use of an accelerometer on earth's surface. It reads out that the earth is accelerating. But if Newton were right then the accelerometer wouldn't read out anything. It would be zero. So gravity isn't a force.
imo, whether gravity should be considered a force is in the same group as things like the centrifugal force: it depends on what you're doing. For complex orbital maneuvers it can be more helpful to think about gravity in terms of curved paths through spacetime, but when talking about how it affects people and mountains standing on a planet it's more useful to think about it as a force; much like how whether the centrifugal force should be considered to be one depends on whether you want to describe something released from a spinning wheel or someone sitting in a centrifuge
So to put it simply, you are saying that gravity is both things at the same time?
Thank you very much for making these videos!
Great video and channel! That guy really knows how to present information!
Merriam Webster is round-about in its definition of Force. Force is basic & fundamental. Its succinct definition is - Force is proportional (symbolised ∝) to the rate of change of momentum. This, of course, introduces a constant of proportionality between Force on one side as well as momentum & its change-rate on the right hand side - depending on a preferred units-system for use. The practical aspect is one worthy of a look. The proportionality constant can be reduced to equality (symbolised =) depending upon our choice of units used (length, mass & time), that was quite arbitrary till date. Yet, our defining that unit as 1 Newton, makes the proportionality constant as 1. It is this effort of rationalising or normalising, that is on now.
“Be careful when you make a claim about what’s going on…”: thank you! Too many people do this, and it leads to misunderstanding. (Honestly, I’m only talking physics.)
"Matter tells spacetime how to curve, and curved spacetime tells matter how to move."
This statement is a simplified explanation of the fundamental idea behind Einstein's theory of general relativity, which describes gravity as the curvature of spacetime. According to this theory, matter and energy warp or curve the fabric of spacetime around them, creating the gravitational force that we experience as the pull of gravity. In turn, the curvature of spacetime determines how matter and energy move, following what is known as the geodesic equation.
The idea is that the presence of matter or energy creates a distortion in the fabric of spacetime, which is felt by other matter and energy in the vicinity. The curvature of spacetime, therefore, tells matter how to move, by creating a gravitational force that pulls it towards the source of the curvature. This is sometimes referred to as the "gravitational field" created by the curvature of spacetime.
In summary, matter and energy warp spacetime, and this curvature of spacetime creates a gravitational force that affects the motion of matter and energy.
You have been a positive "force" for me in learning. Thank you!
I'm grateful for this rebuttal, it needed to be said. Given a precise definition of "force" and "gravity", it's trivial to answer the question yes no or maybe. But as you said, it all depends on the framework you're talking about. In a colloquial framework, gravity's attraction "forces" me towards the center of the earth. Under the framework of Newton, gravity causes masses to accelerate towards each other, and is therefore a "force" per F=MA. Under Einstein, gravity causes spacetime to warp and is not actually a "force". But we know for a fact that all three of these frameworks are only approximations of what gravity truly is. So the jury is certainly still out.
No, gravity is not a force, which is a result of direct measurement and quite independent of any model.
Physics is soooooo delightful!! Thanks for the explanation. There is always a lot more to learn.
Thanks. Great video. Re Gravity? Who knows? Curve in Space/Time? Particles? I have shunted it into the corner of one of the many mysteries...I envy those who announce they understand gravity.
this video made more and more sense the closer it came to the end ;-) ............... In my mind matter creates vacuum in space, and vacuum pulls the surounding matter inn. ........... =? Entropic ?,.....
So good you mentioned the Serway's physics book. After reading a few pages, it seems a very well put book.
Now skip to the end and see how it ends
@@andrewpaulhart WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! BALANCE AND completeness go hand in hand. GREAT !!!
WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. (WHAT IS E=MC2 IS dimensionally consistent.) Consider what is the man (AND THE EYE ON BALANCE) who IS standing on WHAT IS THE EARTH/ground, AS touch AND feeling BLEND; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! BALANCE AND completeness go hand in hand.
WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent, AS “mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/AS what is BALANCED electromagnetic/gravitational force/ENERGY; AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE (ON BALANCE). INDEED, GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE !!! The stars AND PLANETS are POINTS in the night sky. WHAT IS E=MC2 IS dimensionally consistent !!! Accordingly, ON BALANCE, THE PLANETS (including what is THE EARTH) sweep out equal areas in equal times. Consider TIME (AND time dilation) ON BALANCE.
WHAT IS E=MC2 is taken directly from F=ma, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). WHAT IS GRAVITY IS, ON BALANCE, an INTERACTION that cannot be shielded or blocked. WHAT IS E=MC2 IS dimensionally consistent !!!
CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME (AND time dilation) ON BALANCE.
INDEED, TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! GREAT !!!
ACCORDINGLY, ON BALANCE, the rotation of WHAT IS THE MOON matches the revolution. GREAT !!!
WHAT IS E=MC2 IS dimensionally consistent. GREAT !!!
It is a very great truth that the SELF represents, FORMS, and experiences a COMPREHENSIVE approximation of experience in general by combining conscious and unconscious experience. INDEED, the INTEGRATED EXTENSIVENESS of THOUGHT AND description is improved in the truly superior mind. BALANCE AND completeness go hand in hand.
By Frank Martin DiMeglio
Another excellent video from Dr. Lincoln! It took me a few steps closer to understanding gravity.
Another outstanding video! I love this: "...you're probably only partly right, and then only some of the time." That's on a par with Oliver Cromwell's "...think it possible that you may be mistaken." Or James Thurber's "Beware of half truths. You may have the wrong half."
I had a physics professor (a high energy physicist, by the way) who used to joke that "the graviton is a spin 2 particle roughly the size of a basketball." 😁
My version of Betteridge's Law: "If the headline ends in a question mark, don't read the article."
People always say that gravity is a beach, which is weird, because beaches are tradionally horisontally-orientated. Anyway. Grwat vid, Fermi, as always! 😎👍
Such an interesting subject. I wish there was a better way to depict spacetime distortion. In the warped grid depiction, the grid lines bend toward the mass as you approach and then bend away on the other side.
A mass following its geodesic and deflected by another mass doesn't warp back away like those lines.
I also wish I understood more of Einstein's mechanisms. Momentum, force times time, is mv and is conserved. Kinetic energy, which is force times distance, is 1/2mv^2 and can be converted. If I understand, Einstein's rest energy is proportional to rest mass by a factor of c^2 - but if it's energy, why is it mv^2, not 1/2mv^2?
Perhaps the answer isn't for a TH-cam comment stream. It's probably best found after a few years of college physics and more math than I currently understand.
But it's interesting to think about. Life is richer by the musings.
I think, to put it simply, the warped grid is describing what and how a 2 dimensional reality can exist in our 3 dimensional reality. Before that grid animation/picture I could never understand how 2d could exist within a 3d realm. Until this I could only picture the two dimensions parallel with each other instead of coexisting within each other. Now I have that same problem with 4d now. I don’t understand how 4d could possibly exist inside the 2d/3d reality. I can only picture it being completely separate from 2d/3d as if it’s a completely separate universe then the one we are in. Before this I could not simply understand how a 2 dimensional plain could exist within the same plain as our 3d universe as if 2d could only be a totally separate type of reality/universe.
Another great video by Dr. Lincoln!
Two things seem certain about contemporary physics: 1) all definite questions have nebulous answers; and, 2) the probability of knowing anything is inversely proportional to the degree of enthusiasm you radiate for knowing something. :)
@Fermilab Dr. Lincoln, what has always troubled me is that when describing Einstein's relativistic framework, it is said that mass deforms space-time but no mechanism has been suggested (as far as I know, maybe I'm mistaken?).
Is it possible that a force might be responsible for deforming space-time? How else can the deformity of space-time be explained?
Asking for a friend ...
Are you also troubled by the mechanism by which electric charge affects the electric field in classical electrmagnetism?
It is the same. There is none. It is a fundamental relationship.
People often discuss words as if they have a deep, profound meaning. "Force" is a concept that can be used to descripe certain aspects of certain kinds of phenomena. It is not "really" anything. We can say that gravity is an apparent force exactly like centrifugal force. The real force is then the floor pushing you up, causing you to accelerate in the free-fall frame of reference. You choose how you use concepts like force and then everything else relevant for the phenomena must follow the same definition so that everything works together. If you design a forklift, it is most convenient to think gravity as a force, because using curvature of space-time is more difficult for that purpose. But nothing is "really" a force. We don't know what anything is "really". We only know how things work on the level we can observe and one or two more fundamental levels. We don't know what quarks and gluons "really" are and how space-time is made.
I hope that you do a deep dive into those topics. I think we'd all love to see it.
Gravity is an acceleration into low pressure vortices into Counterspace.
Mass is in Counterspace.
Matter is in Space.
Mediated to center of everything is Counterspace.
Shows Space Matter and Counterspacial Mass.
Momentum = Matter is accelerated, Mass follows. Matter is stopped, Mass continues in Counterspace.
The Bullet Cluster Galaxy!
Another fine job, Dr. Lincoln. Thanks.
When I studied physics at University of Oslo in the late 1980s, I attended meetings in “the Free Evangelical Assembly” and at a meeting in 1985 there sat a man on the same row of pews as I did and when we rose to pray, he waved in the air with his right hand as he gave a short speech in tongues and then translated it, the message was: "With one word I put the stars in the sky and with one word I can ruin it all, but I speak softly to you." I hadn't seen him there before and I didn't see him again later either.
So here the Lord quickly went from telling me that he created everything by his Word (Genesis.1), to speaking of my learning and understanding of it (Genesis 2 and the gospel of Christ, on the foundation of the gospel of Christ he spoke softly to me.
In one word, he put the stars in the sky. It made me think that physicists are trying to unite the fundamental forces into one force. They are still trying to do that, but it seems impossible to include gravity.
This shows again that modern cosmology fits with what is written in the Bible. The prophets said long ago that the planets were not gods and modern science confirmed it, that’s how it started.
So what about psychology and biology. Most of the evolution theory has been confirmed, but some of it is not really science but nature philosophy. How to answer questions like, how to make development, in which direction should it go, how to use our mind in contructive thinking, when and how to use power make progress? What about free will?
Then it is good to know that God gave us the correct answer to this, because he loved the world so much that he sent his only Son to the word, so that everyone that believe in him shall not perish, but have eternal life. Everyone that received him, he gave the right to become children of God, borne by the Holy Spirit. And what is borne by the spirit is spirit. It comes from heaven and by receiving it we are already part of the new creation, society and world that God creates.
Funny, I'm just reading a great book called 'A Short History of Nearly Everything' by Bill Bryson, and he discusses how gravity is not a 'force', but rather a result of the bending of space by a given mass.
Everyone always says that Newton's equation is F=ma, but if you really look at the Principia, Newton really relayed more that force is change of momentum as compared to change of time (F=dp/dt), as well as giving us the math to really understand this (calculus). This is true genius, and conforms even with special relativity.
It does conform with special Relativity if you use the relativistic definitely for p.
The issue is that gravity does _not_ conform with special Relativity because mass density and it's effects are not Lorentz invariant.
That is why special Relativity does not describe gravity and we need general Relativity.
And here gravity does not cause a change in the proper relativistic momentum.
I think the problem is language and our imperfect definitions. Gravity isn't a force like viruses aren't alive and like Pluto isn't a planet. What we call something doesn't affect what they are. It affects how we think of them.
Excellent presentation, 🙏 thank u
It is a consequence/result/by-product of aether flow! All matter/compressed aether, creates a negative pressure zone in uncompressed aether/space and a pressure gradient is formed. The pressure is top-down as is the flow. The larger the mass of matter, the greater the pressure gradient.
Yes, kindly make another video (or series) of all gravity theories please?
That’s fantastic, the significant thing you’ve just said is that ‘It’s like what’s going on between you and your ex….it’s complicated’ very very pertinent after my yesterday; my goodness!
Can a thing of no substance be distorted or bent? Can a thing of substance be distorted or bent absent a force acting upon it? If mass bends (curves) space, then mass is exerting a force on space. The same applies to time. I suspect that quantum gravity is the inherent force of causation. I would use the nomenclature “Causatron” to describe the force carrier particle. Mass emits a Causatron that modifies the direction (path) of causation.
How can we pursue gravity "particle-like" explanations when you need a space-time backdrop to describe it, but gravity itself IS the backdrop? That's like saying you are describing the backdrop operating on itself? Or it's like saying describing x-y-z coordinates influencing the behavior of x-y-z coordinates?