Brian Greene Hosts: Reality Since Einstein
ฝัง
- เผยแพร่เมื่อ 15 พ.ค. 2024
- In celebration of the 100th anniversary of Einstein's general theory of relativity, leaders from multiple fields of physics discuss its essential insights, its lingering questions, the latest work it has sparked, and the allied fields of research that have resulted.
Subscribe to our TH-cam Channel for all the latest from WSF.
Visit our Website: www.worldsciencefestival.com/
Like us on Facebook: / worldsciencefestival
Follow us on twitter: / worldscifest
Original Program Date: 05/30/2015
Host: Brian Greene
PARTICIPANTS: Gabriela González, Samir Mathur, Andrew Strominger, Cumrun Vafa, Steven Weinberg
Introduction with Brian Greene 00:00
Participant Introductions 04:25
What aspect of physics is so important that you would tattoo it on your body? 08:05
Steven Weinberg takes us from Newton to Einstein. 12:05
What was the observational support for Einstein theories? 19:20
Can Newtons ideas be extracted from Einstein's? 23:40
What did Einstein think about the Big Bang? 30:58
What did Hubble's observations discover? 33:39
What is the biggest unsolved problem in cosmology? 38:03
What is the history of Black Holes? 40:31
Einstein's thoughts on singularity. 47:33
What is a gravitational wave? 50:49
What does a gravitational wave sound like? 57:52
Combining General relativity and Quantum mechanics. 01:00:28
Cumrun Vafa on String theory. 01:10:50
Samir Mathur explains information loss at a black hole. 01:17:45
Black Holes to Wormholes. 01:28:45
Is the fabric of space time a physical thing? 01:32:24
What is the one question you would want answered in your lifetime? 01:36:37 - วิทยาศาสตร์และเทคโนโลยี
![🔴 [TRỰC TIẾP] U20 Thái Lan VS LPBank Ninh Bình | Cúp VTV9 - Bình Điền 2024 | JET STUDIO](http://i.ytimg.com/vi/3wRNdAy3DXs/mqdefault.jpg)
Hello, TH-camrs. The World Science Festival is looking for enthusiastic translation ambassadors for its TH-cam translation project. To get started, all you need is a Google account.
Check out Reality Since Einstein to see how the process works: th-cam.com/users/timedtext_video?ref=share&v=3EOpHHjv5g8
To create your translation, just type along with the video and save when done.
Check out the full list of programs that you can contribute to here: th-cam.com/users/timedtext_cs_panel?c=UCShHFwKyhcDo3g7hr4f1R8A&tab=2
The World Science Festival strives to cultivate a general public that's informed and awed by science. Thanks to your contributions, we can continue to share the wonder of scientific discoveries with the world.
daffy more pebkac
World Science Festival @ @ @
World Science Festival
If what I see the world before and I knew that the statue all around the world they are all the just the bad example of people in the past , people ...kids in this present time should used the Brian and analysis with carefully not too hurt anyone else except yourself... the world is so cruel , bad ...selfish ...and very cold ...and it always be like that forever. Do you think these retarded kids need to have the better world? Or something better than what they are facing with? Do they screaming and asking directly to the world one by one ? Hell No, But they would agree with me in something if I saying out ...for sure... ask for more painful for your torturing ideas ... yes is what I would want ... make me more ....until turn me to be not weak and useless to be not human no more ... there is no God left in me ... that what I am waiting for , am I surprised you guy or u didn't expect what will come out from me ...
Keep all the goodness with your people ok ... don't mixed with these kids like me ... if I don't go hardest as you I won't get the best from you ... I won't know how the world greasiest as well ... because there are so many bullshits in this universe... sorry that I used this way to see the world , people have just only one life .... not more than that ...I want the other human should know this very well . Not to say ... you can start to have to new life ... pause ...this ... because half of these people never gonna make it.
Do you know why I am so confident ...about life that I am inside now ? Because I see that loop....I can guess from what I am now ... I am sure that it has to be like that .... like a unknown powder that you love to used with us.
I know u love to see lot of the depress people who in the crazy hospital ...right ? What a beautiful images ....isn't it ?
I don't mind admitting I have a huge man-crush on Brian Greene. He is such an incredible educator. He makes complex and seemingly boring subjects feel magical, joyful and funny.
Are you a guy? That's so gay
Einstein was figuring all this out in his mind while people were still traveling on horses, discovering & understanding time dialation & length contraction by doing thought experiments, at a time when spaceflight was but a dream. Genius doesn't seem to do him justice, & it makes Newton & all those others even more astonishing when you consider how long ago they were figuring out all the different laws of the universe, when man's knowledge & scientific understanding was so limited, extraordinary mind's that one can but appreciate, marvel & envy. Bravo.
There was steam power and railroads.
According to wiki the Wright Brothers were in flight in 1903.
Einstein's was smart, but his Space Bending theory is impossible.
Newton's Gravity do not enable motion !
Mathematical concepts without physical evidence is not physics !
@@rayagoldendropofsun397 Then what is the true mathematically consistent description of gravity?
@@akosseres There's none.
All Newton's equations of motion fits perfectly with ENERGY.
If there's one single motion that's enabled by Gravity here on planet Earth, please let me know !
@@rayagoldendropofsun397 If you throw an object here on Earth in a vacuum then the trajectory is going to be a parabola... That's because of gravity.
Also, the precise calculations needed to launch rockets and satellites into orbit would not be possible without mathematically describing gravity.
Also general relativity perfectly predicts the motion of planets inside the solar system.
It’s amazing that a mere 4 years later we have proof of gravitational waves and a picture of a black hole 😍 what’s next???
Gabriela Cambero - Don't think you're aware that GAS BONDING has totally DEBUNKED Gravity.
@@rayagoldendropofsun397 Gravitational waves were observed less then 2 months later.
@@IDraganM -
Gravity started with Newton's apple downward falling motion, which is wrong.
Truth of downward falling motion happens when active rising gases in free flowing motion bonds together making solids, trapping it's molecules motion within.
Example: Atmospheric oxygen and hydrogen gas molecules bonds together making water, which is a state of solid motionless mass with its molecules trapped within, because of this, it's free flowing motion is lost, causing a downward falling motion known as RAINDROPS !
Discovery of dark matter or dark energy maybe.
@@vitthalpatil1974 I think you meant worm hole, man has already found a warm hole. =)
I love brian greene, he is the one who is inspiring me to go int o physics. I cant get enough of everything he does
i think he wanted to be a magician, he just can't keep those hands still, someone give him a deck of cards please.
@@HarryNicNicholas jews and italians are very closely related genetically. Could be the reason hehe
JeuϟPater whaaatt?
Yes it's true. Simply amazing.
Gayyyyy
Up until 3 years ago I was familiar with Brian Green. Because of utube and Dr Tyson I became aware of two more. I am now familiar with six leading scientists that I can put into my lexicon of science . I am a 72 year old disabled Vet who is thoroughly enjoying the internet and the questions science is raising. Keep it coming guys...
Leon Clark Thats incredible!
I love this comment. 🥰 so glad to see the beauty of the internet and exchange of information have a positive effect on someone's life. It's made an impact on me too.
Brian Greene is the best moderator of science discussions by an inflationary order of magnitude!😍
One of the best science speakers and an amazing personality, Brian Greene. So much respect to him. He’s one of those people who attract and make you view him as a role model even though I’m not in this “role model” concept overall. Like the Higgs boson that brings pieces together and makes mass matter.
Dr. Brian Greene is one of the best! Thanks for all your hard work, Dr. Greene.
I have never watched almost 2hrs clip on youtube sacrificing my night sleep...and I am taking Bachelor of Doctor of Medicine like what am I doing here...but I can say Physics has found its Spokesmen...The ones I can listen to....bravo Brian et al
Much appreciation from Tanzania
I wish this group will sit together once more and talk about the same stuff , knowing that we now actually have the first pictures and scientific evidance of black holes and the ripple of time and space 😊
Wish I d meet him once in my life, Dr.Brian Greene
What a fascinating discussion! I wish more people on this planet would listen to brilliant scientists discuss the natural world. As an aside, Brian Greene is an excellent host of these scientific forums. His ability to rephrase an expert's statements into more simple, less technical language is masterful. And finally, as a professor of psychology for 43 years, I have realized a passion for physics during the past 10 years. I just wish I could live longer to study this field in more depth. P.S. As we all know, gravitational waves have now been detected. How exciting is that!
After Carl Sagan, I think Brian is the second host who can talk to these scientists in this manner.
👋👋👋👋👍👍
this channel rocks
+realcygnus .YES it is easy to define ''Human''in behavioral ways (which correlate
to biological and chemical((Genetic))forms.Humans ,in large
populations,are always born with five fingered hands,and opposable
thumbs..period...IF it's possible,to find a average
sized''human''population,without ever having children born with hands or
fingers,THEN the scientists would also find that same human population with
different,or developing differences in their bio chemistry,mental-brain
organ developments,and,most obviously..BEHAVIOUR...
+realcygnus
Actually reality has weathered the rise and fall of Einstein pretty well. When his theories are forgotten reality will still be around.
Heisenberg-SchrodingerEmc2 right......some ppl....I guess he thinks his GPS works cuz Allah made it so or something.
+LampDoesVideogame Newton did not have a theory of gravity. Newton observed that the same force that made things fall to the ground also kept celestial bodies moving in their orbits. He devised laws as to what motions the effects of gravity would produce but Newton never considered what the force of gravity actually is. Einstein's General Relativity is a theory of gravity because it proposes that gravity is caused by mass distorting spacetime and objects traveling through the geometry of spacetime are affected by the shape of spacetime itself.
+realcygnus That's because physics _rule_. ;)
21 people currently do not like physics. This was great, but most all of them are on this awesome channel. It's a damn shame this channels videos don't get millions, and even billions of views.
some kind of knowledge you get from al beleave me i got a bit of all but all is allmost mine i love you all thanx - soon we all aprouch each other keep an eye on it you little dude.
I never realized this but Brian Greene is an excellent host! Very well handled when others tried to talk over others. Great talk!
Remarkably smooth and well organized. All the media was spot on for the point being made at that moment. This isn’t edited but just recorded as it happened. They must have had some planning meetings, dry run throughs or something. I love watching any session where Brian is the host, as opposed to ***** who constantly interrupts.
2 months after this video was published gravitational waves were detected. I love science.
@UR Just Wrong ok so who is correct? Does either side have incontrovertible proof?
Prof Weinberg is such an eloquent speaker. Prof. Samir isn't far behind.
Hey guys! You have to invite over Gabriela Gonzalez again! Great speaker, explains beautiful, and was really enthusiastic at her time.
i do not understand this complicated intellectual discussions but truly enjoying all of these incredible scientists talk
I could listen to Steven Weinberg all day. What an amazing intellect. I would love to take a class from him and can’t believe he is still teaching. I would love to know what he meant when he said that he doesn’t look at the pictures, they are misleading (or words that I interpret that way).
I cannot thank you guys enough for your uploads and channel. You have been a source of inspiration and knowledge for the open mind and to those who want to see the world differently, more beautifull.
Thank you from South-Africa. One day I wish to sit in the audience 😉
It gives me hope that Einstein and newton's legacy have not fizzled out but on the contrary, they are flourishing
In this presentation, Brian Greene serves as the perfect moderator because he offers a style that contains both the academic scholar and the "close friend." He is highly credible, and he is always fully aware of his audience's needs. The panel consists of today's geniuses in their fields, and they all performed spectacularly. The content included a huge amount of important material. The visual technology and platform for this presentation is superior and it was sharply executed. This is rather lengthy as presentations go. However, this one holds your attention throughout. So, sit in a comfortable chair, open a good bottle of wine, and enjoy this presentation.
Just in between 2015 when this was recorded and now 2019, the gravitation waves made due to two colliding black holes were detected and therefore proved and a photo of a black holes were taken.
Such a wonderful time to be alive.
Physics is so gorgeous and so exciting.
the matterialistics can not make it with out the electromagnetic ones they need each aprouch see it soon.
Her prediction about when the first gravitational wave would be detected was on point.
Einstein predicted the black holes but not the gravitational waves.
i think i'm the only person here who likes these subjects too much without understanding anything at all.
What an incredible line-up of brilliance!
thank you science guys. These TH-cam videos really get people thinking and you never know where the next great ideas will come from. Hopefully programs like this will help to seek out the next genius to fill in some more of the picture. I'd love to be a fly on the wall to see what the next hundred years will bring
out of all the world science festival videos I've watched Brian Green is the best presenter by far. I wish the others were as organised and knowledgeable about the subject as him. The concept of getting someone in to host who doesn't know anything about physics is not a good idea in reality it just comes across as unprofessional and can confuse the listener.
As bidarwi from bbc Nobel minds
He’s very articulate and easy to follow, even on complicated subjects. I always enjoy listening to him.
55:55 I come from the close future and we have finally detected the gravitational waves:):) Just as Einstein predicted
This is just what the worlds needs a group of people all over the planet talking about science in a calm manner.
I joined this year's WSFB, and with kind of hindsight when I watch this clip again, I see Brian Greene having appeared to be skeptical with the attempt to detecting gravitational waves. Interesting!
I am definitely awed by science and would like to learn more. The presentations from the men’s festival are impressive. I look forward to presentations from the women’s science festival, which I assume is upcoming. For some reason, women’s explanations of complex topics are generally easier for me to grasp.
Man what a panel of guests.
This was the best panel of WSF, everyone so down to earth and so lovely personalities 🌎
Very informative and was gratifying to hear such luminaries on the complex topics.Thsnks to the organisation.The last comments left me puzzled yet.
Brian Greene is not only very good at breaking down and explaining complex topics but at the same time very entertaining at it
Good to see Steven Weinberg doing so well.
She was right about receiving that signal using Ligo. Less than 5 years.
Was thinking the same
timestamps is a big deal for any long educational video. much appreciated.
Brian Greene is one of the most eloquent speakers I've ever heard on the subject of astrophysics. And his wit is an added bonus.
These are my role models and people I deeply respect for getting to the root of it all.
you are found in no place; existing but not at same time were you can be in all places at same time were reality is not real - come on.
@@espaciohexadimencionalsern3668 tf?
@@lostaccount3374 ¡?
@@espaciohexadimencionalsern3668 don’t go through life dumb
Fascinating indeed!!! One of the few worthwhile videos in TH-cam that I enjoyed!!!!
Does anybody know where I can find more in-depth information about the theoretical temperature graph of the background radiation, which comes up at 37:33 ?
Great set of panelists and the new "two track" approach is a great improvement
where are the subtitles??? I need to watch this and I need the subtitless :(
Wonderful discussions. This group of scientists were particularly brilliant and stimulating.
Wow incredible video and guests. Thanks you!
I am still amazed on how many predictions General Relativity is still making.
That's just amazing. I liked how Samir talks about the start of the universe was like a marble @35:00
steven when he talks and closes his eyes BEST PARTS
next year she will come back! :)
5:06 .. "Prease" - I love Brian Greene, but I had to do it lmao
Brian makes these talks great with his interventions to clarify matters.
Brian Green is an brilliant physicist AND a amazing pedagogue...this rare breed of scientists, deserves a Nobel price in my book.
I want Brian to be my general physics professor in uni!
Great talk. I would really enjoy a discussion about the fundamentals in mathemathics, physics and philosophy -- the difficult problems at the point of the arrowhead: Inherent indeterminacy in axiomatic systems (leads to measurement problems in physics). Experimental data is pointing to an emergent reality. I would like to listen to new ideas about the metaphysical implications of quantum mechanics. I would even embrace very speculative ones, because strange -- coherently strange -- ideas should be considered at this point.
Epistemology plays a very important role in how we define axiomatic systems conceptually (often underestimated). We need new ways of asking difficult questions, because the purely mathemathical picture of the universe seems to break down to the language of mathemathics itself as we probe deeper (This does not mean that reality is mathematics. It means that reality is idealistic, and we do not know how to deal with that -- because it implies that reality has some kind of purpose).
I would like to listen to people who do not confuse the concept 'absence of anything' with the number zero. The concept 'absence of anything' is nonsensical when it is applied to physical systems -- and even in ordinary language. This confusion seems to be widespread. It leads to theoretical weirdness (Infinitely expanding 'nothing' described as 'something' etc.).
I would also like to listen to creative ideas about how the observer fits into this picture. The C-word and quantum mechanics mentioned in the same sentence is not necessarily just semantics or quantum quackery. The act of mesurement: interaction between probabilistic fields, seems to have some fundamental significance (interaction presupposes an observer ... a point of determinacy). This means that reality is at least self-referential at the quantum level of reality (I am one of those 'crackpots' who still consider the possibility of teleological effects). I want to know what is going on there, because it seems to me that I am either crazy or that there is something everybody else knows that I just do not understand.
I had a conversation w/ Dr. Weinberg about 25 years ago on the possibilities of quantum effects being responsible for "paranormal" events. At first, he was reluctant to admit that there might be a connection. After a half an hour or so, though, he did confess that it was not beyond the realm of possibility. Now retired, he is still one of the most open minded physicists that I have met. Though, perhaps not with all of his colleagues.
Well, Lucky Gabriela, did not have to wait so long in the end for results from LIGO :-)
Thanks for the math and nice visualizations. It's really enjoyable to see all this videos. Feeding knowledge and curiosity, a productive replacement for my Netflix addiction.
It hit me when he was in an undergrad in college and bought Einsteins book and within “ a couple years he understood it.” I’m in my 40s and just now acquiring this knowledge. I’ve fretted away my youth….
For some reason when I read the Foundation Series Dr. Greene was my mental actor for Hari Seldon's character.
I live only a few miles away from the Livingston La LIGO. It's a pretty dang interesting place if I say so myself. 😊
Thank you Samir. I was wondering why the entangled particles that fall into the black hole have negative energy.
Extremely inspiring video and people, thank you.
What is the name and witer of the book Brian Greene showing on 6:59?
Brilliant. Especially the last 40 minutes were fascinating and give me something to chew on. Some crazy ideas already popping into my mind, better keep them for myself. :-)
+Erik Žiak (tramstefanikova) NO! TELL ME!!!
Erik Žiak Go to physicsforums.com or other appropriate medium and discuss your ideas. Don't keep them for yourself ;)
Was this one year ago? Time certainly lost its meaning. I forgot what I was thinking then. Nobody is interested in my garbage thoughts anyway.
coppy right them i all readdy did at three times actualy four
Fantastic discussion. Brilliant minds all over.
This made my whole damn week !!! Thank you.
Where and when is this expansion accelerating? I hear it said that the further ack you look the faster the expansion. Then it would appear to be slowing as you come forward to the present? This I need clarification on.
Been so excited about this! And I'm actually privileged enough to study the physics of relativity at uni, this is so inspirational.
did you make it yet
You say your "privileged" says so much about you.
In my eyes you and the sciantists above are the South Pole explorers of our time.
@@thomasbramwell9592 I'm modest about my ability and take pride I had the opportunity to study physics. I'm not at all privileged in my upbringing if that's what you are implying. I am working class.
Are you massively generalising 'scientists' or 'physicists' in your eyes? The scientists above are the scientific communicators of our time. They are bringing science to the public interest.
@@khosKarm Uni physics? Completed it mate
@@HanzOnGaming137 That’s really nice!
when Brian announced 2nd guest I heard "Erwin Schrödinger", I was like whaaaaaaaaaaaa.... oh
But then you measured and he was dead?
It would be the epitome of quantum mechanics :)
What was the title and author of the book he spoke about right after the introductions?
I enjoy going back to these previous lectures knowing how much has been proven and how they arrived at the results. These are timeless by providing so much theory and applied comprehension.
Lol. Applied comprehension? 🤣🤣🤣
@@holdendavid9025 Don’t hurt yourself on my account 🤪😜
It wasn't _precisely_ that light will be deflected by a gravitational field - since Newton's math already showed that would happen. Einstein's calculations though, showed that the effect would be _twice as great_ which was the important difference.
Physics is the same across the whole the universe, of course the universe is going to be homogeneous!
Dark energy should not be looked upon as a mystery, it is a fact, embrace it!
Black holes are very obvious, the maths shouldn't cloud the observation!
Black holes don't have a singularity!!! Come on this is just common sense!
Oh jesus, if you accept a gravitational field you must have gravitational waves, wtf is this women on!!!!!
Outstanding presentation!
Just watching this today and hearing them talk about trying to detect gravitational waves from colliding neutron stars within 5 years and poof 2 years it worked awsome stuff!
Thank you for sharing! I enjoyed this conversation!
How beautiful is the current time w.r.t this video. We have detected gravitational waves, we have black hole image. Way to go Science!!
Einsteins mistake was him thinking that he had made a mistake - Steven Weinberg
Steven Weinberg is a moron. Einstein was a quack. The whole notion of space-time is utter bullshit. Space has no physical properties, and time is just measured motion.
@@Mick0722MX You have a point, BUT do you have an alternative theory how the universe works at a macro level. Could you include equations that predict the movement of the Earth's motion around sun?
@@jamesdolan4042 Open any credible Physics book, and it will tell you pretty much anything you want to know.
@@Mick0722MX you are a vegetable.
@@hattron6704 You're an idiot.
So this was 2015. Then a few months ago Weinberg’s wish of seeing a black hole was granted. Pretty mind-blowing.
Is it possible for space to expand faster than the speed of light? I looked up the speed of the expansion but there was no mentioning of any limitations.
I actually do have the same formulation of the Einstein field equations that they show at 19:00 tattooed on my arm :)
big mistake boddy he is based in just a color(yellow one) and space is not flat but exagonal cone shaped
59:20 "I think it s going to be in less than 5 years"... (took them 2 months! how beautiful...)
yes im sure they must have jerked off to it on the spot and then came all over the computers and report papers ohh yeah
@@samirrimas what you upset about
That part about grav.waves is kinda funny (retrospectively), because we know that first detection in ligo happened barely two month later after publication :-D
fascinating to see this knowing that shortly after this, they did detect a gravitational wave at LIGO, and it was so much better, louder and less noisy than anything they could have hoped for. Must be extremely satisfying.
This comment board is full of people with no education in any relevant field critiquing the smartest people working on the most difficult problems in physics. If you're about to comment something negative, think just a few seconds longer about whether you have anything actually relevant to say.
Sean Cook such is the arrogance of people nowadays
Sean Cook Butthurt?
Keep stifling People's intrest in science nerd
Daniel very clever i fast forwarded just to see what you were talking about thanks
LOL. dude, that's harsh
@43:00 the picture of black hole ... Several years later we have a real picture of a hole
When I was young student.... Always loved Physics, Mathematics & Architecture before I drop off-from my university for personal reasons & succeeded different way!... Great conversations. I enjoy it. One day I'll hold my favorite titles...no matter-what-it takes. Just to keep my brand...Not to make money for it.
Thank you for a challenging stunning video. What an extraordinary universe we live in ...
next year she will come back! :)
Always pleasure hearing brian greene.....
Was there a follow up with Steven Weinberg on this topic?😃
57:59 The first observation was made on 14 of September 2015 and announced on February 11th 2016.
Consider the Big Bang as not being the origin of our Universe but the continuation of space time from another universe where Black holes with so much density actually rip through the fabric of space. There might be as many universes as there are galaxies in our own backyard. Philosophical and science fiction stuff in itself but hey no one knows what happens inside a black hole and did Hawkins not discover that black holes eventually evaporate.
and they detected the first gravitational wave 5 months after this ! Amazing ! Science Rules !
And now, a photo of black hole is successfully taken too!
was looking for this comment
Science, alone, doesnt actually do much. Highly intelligent people 'rule', as you say.
Those bestowed with a rare level of intelligence created science.
Anyone may make theoretical knowledge. Most persons may discover practical evidence, measurements, methods, repeatable experiments, analyses, models, etc.
Einstein gave a glowing account of the Italian mathematicians who added insights to Riemann’s differential geometry.
Its crazy to think that LIGO has recorded the presence of these gravitational waves (created by the collision of two merging black holes) for the first time
Due to my stupidity i can not put into words the greatness of this video
Not stupidity but your insight.
Mr greene ur way of explaing is so nice ..love from pakistan
Dr Weinberg is a pleasure to watch and listen to.