Why don't quantum effects occur in large objects? double slit experiment with tennis balls
ฝัง
- เผยแพร่เมื่อ 9 ม.ค. 2020
- Signup for your FREE trial to The Great Courses Plus here: ow.ly/Zwss30q7SHs
The quantum physics of large things: Macro quantum effect. Why don’t tennis balls behave like quantum particles? What happens to a baseball in a double slit experiment? This experiment shows that atoms behave like waves of probability when not measured, and particles when measured. We also see that two quantum particles can be entangled, meaning that are connected through a sharing of one probability wave.
Why don’t we see these kinds of behavior in our everyday macro lives? At what point does the quantum behavior stop and classical behavior of everyday objects begin?
Scientists have shown quantum behavior through a double slit in particles as large as molecules containing thousands of atoms, but what about really large things like balls? Will we see the same kind of behavior that electrons or atoms have? No we will just see two patterns on the back wall. Why doesn’t the whole behave like the individual atoms it is made up of?
To answer this, we have to understand some of the basics of quantum mechanics. When we shine a Monochromatic light through a double, we see an interference pattern on the other side because as the waves spreads out, This should be no big mystery. This is not quantum mechanics, this is just a property of waves. It will happen with water waves too.
In the Copenhagen interpretation, these particles are not particles - they are like wave of probabilities. The waves become distinct like particles only when they are measured. At the point at which the probability wave becomes a distinct particle is called a collapse of the probability wave. What scientists have found is that when the which-path information of any particle is measured, its probability wave collapses. For the particles to remain probability waves, their path information must remain in absolute secrecy. If at any point any kind of measurement is made, whether it seen by anyone or not, the particles become distinct and do not display wave-like behavior.
A measurement always collapses the wave. A measurement is a formation of any physical record of which path the particle takes. It is such that a quantum forensic exam could establish which path the particle took. The particle has to be informationally isolated. The interference can only occur if it is impossible, even in principle, to find out which path the particle took.
Now what if throw really large particles that are composed of quintillions of atoms, like tennis balls at a double slit? Will be see an interference pattern? No, The reason is that large objects are nearly impossible to isolate informationally from the outside world. Let’s look and see what it would take to isolate a tennis ball informationally.
First we have to remove all the air and photons in the experiment - Because if a photon or air molecule bounces off the tennis ball, then it has potentially recorded the path of the tennis ball. The photon will do the same thing, if a photon reflects off of the ball, then that could be a measurement because the path of the photon would be changed and the bounced path of the photon has recorded the path information of the ball. Potentially, someone or the universe could examine the paths of all the photon in the room, find out how they were affected by the path of the tennis ball, and find out from that information, the path of the tennis ball.
We will also need to cool the baseball to near absolute zero, because the baseball that has a temperature will emit photons due to something called black body radiation. These emitted photons will have recorded information about the tennis ball, such that someone examining the photons could determine the path of the tennis ball.
We even have to worry about the small amount of gravitation that the tennis ball will have, because this gravitation will effect nearby atoms. This in principle can allow someone to determine the path the tennis ball took. So this ball will also somehow have to be isolated from that.
We have to completely isolate the tennis ball because any information that is leaked to the universe about its path will create a record. Even if this information is recorded in one atom, it is still information which has been captured in the universe, and the tennis ball will not be in superposition.
#macroquantumeffects
Macroscopic objects like this are very difficult if not impossible to isolate informationally. So in our everyday experience, we will not see quantum superposition or wave like behavior of macro objects. This is the reason, you and I and the cat in Schrodinger’s experiment are NOT in superposition. The cat is not dead and alive at the same time. That is a myth. - วิทยาศาสตร์และเทคโนโลยี
This is literally the only thing I've seen or read that actually defined what "measurement" means with regards, to the double-slit experiment. Such an important thing and nobody ever bothers explaining it - except you!
Karen Barad's book Meeting the Universe Halfway has a more in-depth explanation that might also be helpful. She also talks about the history of the double slit experiment, and its importance in philosophy.
Yes exactly how I felt. Arvin always nails this. He addresses the most natural questions that most people would ask when learning about this subject.
@The man in the mask Can you recommend some other?
Why is a detecter considered a recording but seeing it and processing it with our brains not? If our eyes could see the path of electrons would that be enough to make a difference?
@@unsignedmusic Yes, I think so. He didn't say that seeing it isn't a measurement, he said that it is not necessary to see it.
Because usually one (including me) would think that a human or animal mind is needed.
Damn man! This is all inclusive.
1. It gives one of the best double slit experiment explanations, like ever.
2. Easily deals with the myth of the conscious observer.
3. Answers the main question very well.
I do not agree with point 3
Aufenthalt perhaps so. That is why I have asked my question and hopefully clarified the issue to be “information”
Watch some videos of Don Hoffman. And then review those 3 points.
Christoph Küstler I have and shared them with my colleagues and will discuss in upcoming meeting next week. Thanks
The problem is the definitions of information and observation are ill defined. Invoking some kind of quantum akashic record doesn't get rid of consciousness.
The use of the words “observation” and “measurement” in quantum mechanics is thoroughly misleading. Replace them by “interaction” and things become much clearer. A probability wave exists only while it’s _not interacting._ When an interaction takes place it collapses. An interaction is an _exchange of information._
Nice video - intuitively appealing and convincing.
Good suggestion!
If it acts like a wave it’s a wave...same as photons. The waves collapse directly because of the detectors. Therefore you get a single position just like any other particle or macro object. What the field is and how it interacts with spacetime (unknown fabric they speak of) is yet to be discovered. Perhaps the microscopic particles, which are pure energy, cause ripples in the fabric?
Right, but thats not the whole picture. To be more precisely you should also say "when an interaction took place, takes place or WILL take place", and this is where it gets so mind-boggling.
How soon after it interacts can it go back into a probability wave? How is this defined?
@@muftiadnan the collapse of the wave function is thought to be irreversible.
I'm at a point where I thoroughly understood everything he said, and these ideas can have some profound effects on philosophy and perspective of the universe. The fact that information affects laws of physics (even at a previous time) is all quite amazing.
If it's true and not some fantasy that's being amplified by media and pseudo scientists.
How are they exactly "measuring" the particles? I've seen it done with a polarizer, but that thing actually changes the particles in a certain way that simply erases the interference pattern of the double slit experiment. A polarizer makes you know how the particles travel afterwards, not before they hit it.
I was thinking when he talked about information and the universe, that information is strongly related to entropy, and maybe the tabula rasa of the universe fills up and the system stops as "time" goes on. It occurs to me that we can go back in time, but we can't change anything; it also occurs to me that if we go back in time on a regular basis, it would be like recursion in a computer program: we would use up the tabula rasa very quickly. That is, entropy would become a problem.
@@JackPullen-Paradox Philosophy has nothing to do with science, boys. Time travel is fantasy. These science channels don't say the reality, because fantasy attracts more viewers, viewers like you who believe it.
This double-slit experiment doesn't have information travelling back in time, I doubt it even has photons going in 2 directions, because this crystal makes entangled pairs at a 1:1.000.000 chance. Entangled also just means that if you know the values of one particle you also know the values of the other, it does NOT mean if something happens to the first particle, something happens to the 2nd.
This really sounds like a way a developer would optimize his code in a universe simulation (if no record is being made, then use the standard wave behavior) that is crazy to think about
huh that is interesting
I was thinking the exact same thing! I'm surprised someone else thought the same thing.
The weird thing is that there are many observations about our universe which could possibly be explained by thinking of the universe as the equivalent of a computer simulation. But the double slit experiment is an example where the simulation analogy is the ONLY way it makes any sense (at least in my mind).
Yes. Simulation theory. Go ahead and read about it.
Rafael Maia bruh don't talk like the other person is dumb, i have read a fuck ton about way before i watched this video, curb this rudeness dude
Zack Szekely yeah I've noticed that, it's overwhelming the ideia that maybe we're simply in a simulation, that would be cool nonetheless
Spoiler: he doesn't shoot ultra fast tennis balls
So you're saying it wasn't properly tested
Damn, he can't beat Matt yet
Why does everything have to be made into a joke nowadays
@@danielissah9741 these kids and their debroglie memes
Would be interesting if someone brings John Isner just for this purpose
My closest guess of why this is, is that every probability wave plays out on a field. You can't measure something on that field, without putting something else into that field to measure. The moment you do so, you change the shape of the field. Which changes the probabilistic outcome of deterministic processes that occur within that field.
it is sufficient to turn off the device...
This is priceless content. Maybe this speaks to my stupidity but this is the only channel where I don't have to sort out confusion born out of the content I'm watching. Your videos make me feel like I moved slightly forward and leave me asking new questions. Thanks always!
I’ve never found such a succinct and graspable explanation. So well communicated, thanks!
Exactly, his explanation on observation and measurement in a previous video was great and easy to understand for people like me, who really have little to no clue what any of this means lol
This explanation is stupid...
This may be the best explanation of quantum mechanics I’ve heard yet....thank you
Goran Vukovic explain then
Goran Vukovic thinks that’s what he ,ore or less said in the vid.....but ok
Oh my goodness this is the best and the first time this has been explained on TH-cam . Great job!
This is the best video explaining waves and particles. You nailed it. I finally understand the double slit experiment.
I just can't believe I've found the best video ever explaining this matter. Thank you.
All known matter(;?
This really is an amazing video
You didn't. Too little math and too many false or hand-waving statements. This isn't good
@@DAG_42 False statements? Like what? And why do you know better? We'd like to hear an actual explanation. And it's not because I want to challenge you, but because I want to know how it actually works if it doesn't work like this. If you know better, share it please.
The best
NOW I understand why making a quantum computer is so hard - the superposition collapses from an event as trivial as the emittance of some blackbody radiation (which explains the extreme cooling).
The blackbody radiation isn't a problem as long as you make sure it isn't measured in a way that allows you to reconstruct the path even in principle - see the concept of a quantum eraser.
Exactly. Talk about extremely sensitive computing.
This is the only video that makes me understand "measurement" / "observation" deeper and further.
Thank you Mr. Arvin Ash.
You are out of this existence with these amazingggggggg explanations. Forever previledged to have found your channel!
This might just be me, but I've NEVER heard someone give such a solid, succinct, and easy to grasp explanation for the whole "what could potentially be a measurement in quantum physics" thing. I've always kind of struggled to understand it before, but your explanation, combined with the examples about how hard it would be to -not- measure something like a tennis ball, made it all click for me. Thank you!
Glad it was helpful!
Amazing. I love how you approached this. I gained a unique perspective on quantum behaviour that i didnt get from any other attempt at this topic. Nice one!
This is the best explanation ever!! Love your videos.Excellent work!!
This is the best video I’ve seen on the double slit experiment, it now makes much more sense to me. Thank you!
Even after all these years, quantum physics never fails to be weird
human's being here is just werid
*+Ken Smith*
I just love that.
@@Nova-fx6kr that is basically the most accurate depiction of humanity
There’s not one video that explains the double slit experiment so well as yours does. thank you
You need to watch the holographic workshop all 10 parts mate.
actually there is. th-cam.com/video/Q1YqgPAtzho/w-d-xo.html
This answered so many outstanding questions I had, Appreciate the effort of passing on the knowledge
That chart of wave interference merged with the bell curve is brilliant and illustrates a point perfectly.
I agree. A lot of viewers, I think, don't keep watching up to that part of the video.
I loved your explanation. You launched my mind into directions it had never imagined before.
We love how it connected the physical to the metaphysical. A beautiful storytelling. 🌸❤️
I've seen a couple videos on this topic, but it's the only video that helped me understand, why observing the particle changes its behaviour. Thank you very much
The best discussion of the double-slit experiment I've ever seen! I'd love to see you go into more detail as to why small-scale objects are more informationally isolated than macro objects. It's one of those "seems obvious' things, but it seems to be at the heart of the measurement problem. Could atoms have their wave function "chipped away" instead of collapsed in one fell swoop like photons? How long can "large" things like molecules stay isolated, and under what circumstances?
If you make the measurement intentionally faulty, so that it fails say 25% of the time, then the collapse of the interference pattern may not be total. Look up quantum decoherence.
In an experiment done in 2019, molecules with masses greater than 25,000 atomic mass units, remained in a superposition for more than 7 ms
The wavelength though becomes smaller as the mass grows. So the interferometer you'll need becomes bigger.
To detect the wavelength of one thousand times smaller than a hydrogen atom they've built an interferometer with a baseline of 2 meters long.
As I understand it, that would mean that it's possible that if isolated, macro objects behave very much like waves. It's just that you wouldn't notice it since the wavelength is infinitely small
correct, weak measurements of the position can be made to keep most of the interference while gaining information on where the particle or photon is generally at or it's speed and direction, this was done in the area between the double slit and detector, and was used to create a map of the paths photons tend to take between the double slit and the detector. the result was similar to the path models that de broglie-bohm/pilot wave model predicts.
Beautiful Arvin ! The implications of these insights are incredible.. The IF/THEN alarm bells are sounding and it's difficult to keep the imagination bridled.. ANOTHER excellent show!
This is aboslutely FABULOUS explanation!
Another outstanding video, Professor Arvin!
Absolutely love your quantum videos, especially in the way that you are able to explain difficult-to-grasp concepts so eloquently and clearly while also touching on the beauty and mystery of the quantum world
Glad you like them!
Was dying to know the answer about the behavior of macro objects ever since I learned about the dual nature of quantum particles. Thank you arvin 🙏 love your videos. You and PBS Spacetime are the best TH-cam channels 👍
Omg this is brilliant!! I finally understand why macro and quantum scales are so different!!! Thanks you so much!!!
BEST explanation, most basic I have ever heard and easy to understand. Based in theory and testing using the scientific method. Wonderful job.
Thank You Ash. Best clearest makes most sense explanation I've ever heard.
While watching this video, I started getting frustrated thinking about the definition of observer, a thing in many quantum mechanics explanations that gets skipped over. But then you go and provide the easiest to understand definition I've seen yet! It was really useful to be able to actually understand the importance and implications of information isolation.
In order to "measure" the photons passing through the double slit experiment, wouldn't that entail some sort of physical external interaction with the photon? It makes much more sense that this action would materialize the wave function into a concrete phenomena as you've effective imparted external influence on it. I think a lot of people are thrown off by the use of the term "measurement"
yes, a physical interaction is perhaps a better way to describe it.
@@ArvinAsh If that is indeed true, then calling it a measurement is simply misleading.
I've seen a double slit experiment with a polarizer as the "measurement" object. But a polarizer forces the particle into a specific state, but doesn't tell you it's state before it went through. Ofc that can erase the interference pattern!!!!!!!!!!!!!
I think, I finally found the puzzle piece that was missing in this double slit experiment. It's that the media omits crucial information to make physics sound like something mystical.
Aaah, this is SO disappointing...
This is the clearest explanation I've ever seen. Thank you.
This is exactly the problem I have always had with the terms "observation" and "measurement". Both terms imply a passive approach. There is no such thing as "passive" measurement in QM. And since by measuring, you actively interact with the photons, you collapse their probability wave into quantum states. Where is the mystery? At this point, I suspect physicists conciously don't clear this up to keep up the state of mysticism :)
I seen so many dbl slit experiment and read up on it and also watched allot of videos and read books on quantum mechanics and the behavior of subatomic particles and this is the best video to describe why macroscopic objects don't behave the way microscopic objects in the quantum level.. thank you so much for this video.. really enjoyed it and love your channel.. thank you again sir
Question: your argument about "theoretical" possibility of always determining the path of tennis ball, works the same for particles, no? Particles have gravity, photons interact with them, and so on. So it is also impossible to isolate them in theory. What am I not understanding? Thank you.
Danuta Galecka I have the same question. I feel like looking at it with the Copenhagen interpretation is incomplete as he said that the wave interference still comes up with molecules for 2000+ atoms. Surely these interact with photons around them, have a gravitational pull and also (I would think) have some kind of blackbody radiation.
The thing is that particles are always where the probability wave is high, the higher the wave the higher the probability that the certain particle will be there once you measure it, there is a principle called the uncertainty principle, the uncertainty principle says that you can't know the exact position and momentum at the same time, you either can know it's position but not momentum or vice versa. The quantum world is very very different from our classical view of physics. You can't know the path of a particle cause it doesn't have a path, it's anywhere where the probability wave is high
By looking at heisenberg’s uncertainty principle, it can be seen that the more is known about the momentum of a particle, the less is known about its location, and visa versa. Basically, imagine that you draw a line on a piece of paper that represents the path of a particle over time, you know it’s direction, but you don’t know where the particle is on that line. Now, if you drew a dot representing the particle at a certain time, you know it’s location, but have no information about its momentum. It’s an interesting theory and can bring to light the reasoning of a lot of other parts of quantum mechanics.
Danuta Galecka particles can act with the properties of waves, calculated by using de Broglie wavelength calculation, meaning at that it would not be affected by fields such as gravity, etc. However, tennis balls are so large that for it to have the properties of a wave it would have to move so incredibly slowly it would be staying perfectly still. Otherwise, it’s wavelength moving at 50 m/s, or a tennis serve speed, would be smaller than a Planck length, so meaningless.
I agree that this is still an issue. Under this definition of informationally isolated, I wouldn't expect electrons to exhibit wave behavior in a double slit experiment. I don't see how the uncertainty principle addresses this at all. Regardless of the de Broglie wavelength, there would be gravitational information encoded in the path. I also suspect this is an issue with the Copenhagen interpretation and the (in my opinion dubious) link between information isolation and wave function "collapse"
Finally someone said in simple words what I have been thinking for 10 years of what "observation" means. All physicist use this term in popular science entertainment all the time, but nobody ever bothers explaining it.
And I've never before heard about the wavelengths of macro objects in superposition approaching a point. This is such a simple explanation, but somehow nobody felt the need to ever mention that.
It doesn't make a difference seeing that a record is only a record if it is (in principal) interpretable.
Records are just detours along the way to concious observation.
I am still confused, how do they remove the observation effect in the quantum experiments?
Quantum superposition would definitely make sports more interesting if it did occur on large objects. Great video!
Brilliantly explained. Thank you.
One question: Photons are affected by gravity and therefore give information about their position. This means i can essentially revert your question: why doesn't a tennis ball act like a photon to: why don't photons behave like a tennis ball if they give information?
Exactly what I was thinking! Bravo! Similarly, the light emitted from the monochromatic light source is an electromagnetic wave so it interacts with magnetic and electrical fields, so in the laboratory it must exchange information with the universe via the fields present there. So why is that light not exchange information with the universe.
@@XEinstein
My guess is, that this interaction is too week as that the "information gain" it contributes gets wiped away by the Heisenberg Uncertenty Principle.
Edit: Also after rethinking.
The slits in the double slit experiment have a finite but non-zero width. Some photons/electrons may get "smahed" against the border of the slit and thus have to present through which slit they go (same for photons/electrons which interact with eg an oxygen molecule from air before the slit), but for the majority the deviation is much to low. They still are not forced to go through one slit and present which slit that would be. There is plenty of space in the slit to allow for small devitions left and right.
So in a nutshell: the width of the slit insures that small deviations do not force the particle to present the path information.
Wow, I understood ~90% of all you said.That's awesome with regard to the complex content. Great channel.
Beautifully explained. Thank you!!
This was an exceptionally good explanation! 🙏
This is great Arvin, Thank you.
Great video. I really liked how you explained the concept of observation and that it has nothing to do with consciousness. Keep up the good work.
Amazing video one of the best I've ever seen about this subject.
Incredible explanation. Thanks a lot.
Hey wow, really good! I’m impressed. Nicely done message, easy to absorb by an amateur.
As always, excellent!
9:27 That’s the explanation I need! Thank you
Thats enough👍
Wooooow this is the best explanation I have ever seen regarding the measurement problem
excellent explanation. Thank you for clarifying that its not about conscious observation but about something in the universe recording that event even if a human never sees it. This is something that for some reason people never clarify, and it is very important to understanding it.
This was awesome. As expected.
WOW. !!!!
I found this extremely, extremely, extremely HELPFUL. !!!
Thnx, Alvin.
Thank you for uploading this video this has got to be the clearest and most simple explanation for what the double slit experiment!
Love the way you explain it.
This was a really clever and original topic for a video. I watch a lot of science video's this is the first time I've seen this topic. I have always wondered the answer to this question but honestly I didn't think there was an answer or that anyone would really understand the question. Now I know! This channel is the best.
Thank you so much for your explanation! This is a must video for all people who want to study quantum mechanics. This video can save your money and life (to buy and to read a lot of ...papers, one paper to the other...).
Absolutely loved the video!!
Very well presented, it is still a wonderous situation!
Yes it is a 'wonderous situation'. Well said.
Its like being trapped in a Truman show with everything surrounding us in synchronized conspiracy to keep us from finding out that we are the ones being watched.
Don’t let mark Sargent see this
It would certainly be a handy bit of code if you're running a complex simulation and want to ensure that nothing interferes with the progress. Like a firewall built into the basic code of the program to prevent external information from corrupting the data you're trying to collect.
I'm pretty sure we're on TV As Above So Below.
You know those characters on the TV show that their self aware that there in a computer and they want to get out.
I'm pretty sure we're all agent Smith.
But I'm also pretty sure we're all Neo.
But I'm also pretty sure there's a Main.
And a judgment.
But I feel like someone needs to be sacrificed.
I legit saw that s*** and then I'm the one that gets called schizophrenic.
I ain't man enough.
This youtuber deserve millions of subscribers🙌🙌🙌
Wow ! Very interesting and well explained.
I have a few thoughts about this video:
- it's fantastic - thank you for putting it on!
- If small objects are "informationally isolated", that prevents time travel. Theoretically, if we knew the position and velocity of every particle in the universe we could determine where every atom was a millisecond ago, a second ago, a day ago, and as far back as we want. And the same thing would happen to time travel travel to the future. If we had complete information about every particle in the universe we could determine where that particle would be a millisecond from now, etc. How disappointing. As if Heisenberg's "uncertainty" was not enough, the universe puts a second lock on the door to time travel.
- I have a different idea than the one given here about why firing photons one at a time still gives a wave pattern. The wave does NOT collapse. (what a silly idea).
The universe is not a giant empty room just waiting for photons to come flying through. According to another video in the series (I already learned from this video series! Thanks!) the universe is a container with 17 fields running through every part of it. (ok, it's not really a container lol).. Therefore, we are not firing a photon particle in an empty shooting gallery. We are sending a PROTON WAVE through a room filled with fields. Whether we fire one or many photons makes no difference. What I think is happening is that the PROTON FIELD "bumps into" the other fields that make up the universe. THAT is what causes the interference pattern. The photon is not interfering with itself (another silly idea). It is simply interacting with the background fields which are the fabric of our universe.
- The only reason I was able to make a statement about the universe and Fields is because this lecture series is so wonderful.
Well, professor, how did I do? I am a retired NASA engineer, and I did not get deep into physics in my work or schooling. I find these lectures fascinating, even if their content is elementary to every child on K-Pax lol. (reference to a movie with that title).
Professor @Arvin Ash 10/10
What I think is happening is that the photon is never a wave. It is a particle that only is located somewhere when it interacts. The wave part is the probability of where it will be if it interacts. The probability wave interacts with itself, causing the interference pattern
@@vibaj16 I dont think that explains why they’re different when observed versus not though
@@Limbaugh_ It does though. Note that I said "It is a particle that only is located somewhere when it interacts", as in it chooses where it is at random the moment it has to interact
Perfectly explained! 👌
WoW! What a great explanation! ❤
Arvin Ash, thank you. This is easily one of the best and most technically correct explanations I’ve seen of why it is so hard to keep large objects quantum. Far too many “easy” explanations focus solely on the wavelength issue and neglect the critical impact of just one atom or photon. Well done!
I must also apologize. I’ve ignored your channel for years due to an incorrect impression - I don’t recall from where - that yours was one of the everything-is-mystical channels. That was wrong, and I am sorry I did not check back sooner.
From time to time I run in to these videos about double slid. Thing blows my mind every time.
It wouldn't blow your mind if you knew that photons do not exist and all the slit experiments prove the light is only ever waves.
@@dreamdiction why does it change then when you add an observer?
@@yoooyoyooo There are no 'photons', light is waves at all frequencies, there are no particles. It is a thought-experiment, the "photon detector" is an imaginary mathematical probability idea, not a real device. It is impossible to passively tag a wave (or a particle if you prefer) with an identity as it passes through the slit, the only way to detect a wave is to put physical matter in the path which consumes the wave energy by absorption so obviously nothing would come out of that slit. It's the same wave which goes through both slits and causes interference from two separate slit sources on the other side. The interference experiments do not have any detector because that would block the wave and cancel the interference, that's why NONE of the interference demonstrations have detectors, that's why you are only ever shown graphic cartoons of detectors collapsing the wave functions from slits.
@@dreamdiction why is everyone making such a big deal out of this if it's that simple?
@@yoooyoyooo There is no wave/particle duality. Physicists had developed a system for analyzing waves, so they applied their wave-system to matter by treating matter as waves, then followed the converse proposition by treating waves as matter. The wave/particle duality is merely the nonsense of misapplied system analysis.
Electromagnetic radiation (EMR) is waves at all frequencies, never particles. Every experiment shows light is waves, there are no EMR particles, there is no duality. What they call "single photons" is a high frequency interrupter relay transmitter switch used to produce single separate individual wavelengths, like this ~ ~ ~ ~ ~ not "photon particles".
Continuous waves produce interference patterns and intermittent separate single waves also produce interference but at a slower rate/intensity because of the gaps between waves. The interference is the proof that light is waves at all frequencies, never particles. "Probability waves" only exist in researchers imagination, that's why nobody (including de Broglie) could design an experiment which shows light is particles.
The photoelectric effect is easily explained by blue light having the right frequency of positive/negative magnetic induction (alternating push/pull) to magnetically agitate a negatively charged election out of it's shell orbit, that's why the photoelectric effect does not work at higher or lower frequencies - nothing to do with "particles". Did you believe red light was waves but blue light magically manifested 'particles' which disappeared again at higher frequencies.
Electromagnetic Radiation (EMR) is waves at all frequencies, all the experiments show light is waves, there is no experiment which shows light is 'particles'.
The "photon detector" is an imaginary mathematical idea, not a real device. It is impossible to passively tag a wave (or a particle if you prefer) with an identity as it passes through the slit, the only way to detect a wave is to put physical matter in the path which consumes the wave energy by absorption so obviously nothing would come out of that slit. It's the same wave which goes through both slits and causes interference from two separate slit sources on the other side. The interference experiments do not have any detector because that would block the wave and cancel the interference, that's why NONE of the interference demonstrations have detectors.
There are hundreds of videos showing the actual double slit interference but none showing the actual wave function collapse as the interference pattern disappears into observed "particles" because it's only a thought-experiment.
Quantum electrodynamics textbooks give a summary of the discussions between Bohr and Einstein in which they each propose a variety of impossible imaginary "detectors". They were just talking, the 'detector' was just an idea.
Physics had a well-developed analysis of waves, so as a thought experiment they started treating matter as waves, later they reversed the thought experiment and started treating waves as matter, the self-induced paradox of the two thought experiments created wave particle duality and 'spin' only exists in the minds of believers, not in reality. Schrodinger published his cat in a box thought experiment only to demonstrate the absurdity of the wave/particle duality idea, Schrodinger was later very surprised to see his absurd cat in a box story being used to demonstrate the true nature of state vector collapse wave/particle duality.
Relativity and Quantum Electrodynamics are thought experiments, that's why cosmology and QM are a cult-like belief system with a priesthood guarding their made-up doctrine by excommunicating doubters, for example, it is impossible to have academic career in physics if you say there is no proof that black holes exist. There are some places in the universe which seem to have more gravity than expected and some of these places seem to have more gamma radiation than expected, that's all we know about "blackholes", everything else is speculation, but if you publicly say this you become an outcast without any academic employment prospects.
Go and search for actual experimental evidence of wave/particle duality and you won't find it, because it does not exist. Electromagnetic Radiation (EMR) is waves at all frequencies, never particles. You must have suspected this surely?
As a programmer, I see this as an intended resource optimization by just not rendering something that was not meant to be seen. In other words it really does look like a proof of the world being a simulation as this is exactly what we would do in a computer game. Why simulate waves canceling-out if you can just render them pre-cancelled knowing the result or why render something smoothly when no one is watching it?
Yep. Check out Donald Hoffman.
I think you explained it the best 🔥🔥🔥😀😀😀. Thank you
Very good video! I know some have said aspects of QM make it easier to sim the universe. Would love you to do a video explaining that in detail.
I've been looking exactly for that answer for a while!
So it is a matter of mass: the heavier the subject, the slower compared to c it is, the shorter the wavelength. Awesome
"the heavier the subject, the slower compared to c it is, the shorter the wavelength"
???
It seems like molecules can behave as in Quantum Physics stated aswell.
And they can have 0 speed of c.
Wow. I've been watching loads of physics vids recently. PBS space time, Fermi lab, Up and Atom...
This is the first time I've fully understood something! Mind you, I am a little bit stoned, so perhaps that helped.
this channel is a gem in whole youtube. these videos should remain forever to help generations understand
Absolutely awesome explanation!!
I always enjoy watching your content. Everything is so well put together. Keep up the good work and spread the science! 🤜🤛
Damn, getting the answer only gives you even more questions :(
I’ve always been curious why macroscopic objects didn’t exhibit this behavior! Thank you for explaining it very well!
This guy is my new favorite! The way he explained it helped me better understand then even seeker or others. And I like the fact he said even our thoughts effect the universe!
So if a tree falls down in a forest and no one’s around it DOES make a sound. Got it.
It makes a pressure wave. Your ears and brain interpret it as a sound.
Well this is because we know from the past experience that it'd make a sound, i.e. the belief that the future will act like the past.
@@stivendog Not quite, "sound" is what we call a pressure wave in a medium. Ear receives and brain interprets but the sound (aka the pressure wave) still exist without ear and brain.
Yes, like Schroendinger's cat it's either dead or alive, but not both at the same time.
Yes! th-cam.com/video/QN_-fyBegtM/w-d-xo.html
This is the most visually digestible explanation of quantum effect I have yet seen. It greatly helped me to understand a little bit better the dichotomy between macro physics and micro physics. In some ways it reminds me of the philosopher George Berkeley's question, if a tree falls in the forest and nobody hears it, does it still make a sound? I presume we can never take a measurement without interfering with a particle. We believe this interference (interaction?) changes the observable behavior of the particle. If we could take a measurement without interfering with a particle, would its behavior still change, or would it not change? Does the act of measurement, even passive measurement (if such a thing were possible), create a false perception of the event, or does it create a new event (in which case it isn't false)? In the macro-universe we see no observable discrepancies because the joining together of enough particles permanently alters the behavior of these particles. I find this idea comparable to the Gestalt psychologists' famous dictum that the whole is greater than the mere sum of its parts. The joining of enough particles changes the dynamics of those particles in a way not possible when the particles remain far enough apart (what constitutes far enough?). In effect, we are talking about two different universes, one completely joined, and the other completely disjoined (one might say unhinged). Can this latter universe even exist outside of the laboratory?
"If we could take a measurement without interfering with a particle, would its behavior still change, or would it not change?" we can get close, weak measurements have been made before, slightly disturbing the interference pattern, while giving slight information
This is the best explanation I’ve seen so far.
Best video on quantum mechanics I've seen so far. Mostly because easy to understand for the layman but still be accurate factually.
Truly mind - blowing! Even when I don’t understand it...!
Don't feel bad. Nobody understands it. It's an open area of physics.
I'm a complete physics layman. But *three years ago,* in a science discussion post on reddít, I first noticed and pointed out the convergence of wave-like behavior of atoms into classic macro particle behavior when the relative wavelength becomes super-tiny. I was *laughed at* for suggesting something that silly... so now I feel vindicated -- thank you!
Wow!!! Such a great video thank you!!
THANK YOU FOR ANSWERING MY PREVIOUS QUESTIONS...!!!
THANK YOU DR.ARVIN ASH...!!!
This is hands down the best explanation about the DS-experiment that I have seen. I especially like this "informationally isolated"-concept which allows me to understand the phenomenon just a little bit more which has not happened for a long time despite watching a lot of DSE-videos. It's almost an insult that you don't have millions of subs already.
I find this explanation of the wave function collapse having strange correlations with properties of thermodynamics. Very interesting.
I'm closer to a better understanding, thank you.
Thanks for explaining the nature of the observation. Been wondering about that since highschool, but explanation wouldnt be given.
Thank you! Finally, someone gets the dead/alive cat scenario right. I get so tired of people saying that 'the cat in the box is alive and dead', because they don't understand what a paradox is. It's very refreshing to have this explained properly.
the cat is dead, because to isolate it, you need to put it in a vacuum (among other considerations), which would kill the cat
Schroedinger's cat is not even a paradox. It's just plain nonsense that doesn't want to die. Kind of like religion.
This show is so cool.
thanks for that very clearly explained
The true mark of a master is one who can explain to non domain experts complex or abstract ideas without using the terms and nomenclature of the experts’ domain
5:36 Hold on, isn't the whole point of the Delayed Choice Quantum Eraser experiment that when you scramble the information about which slit the photon travelled through the interference pattern still occurs?
Yes. I believe Arvin had not heard about this experiment.
@@KennyT187 He got a video on the subject from 2019.
@@flawmore Yeah I noticed actually.. so he was a bit off when he said the interference pattern is lost forever. As long as we do not entangle ourself with the which-path information the interfence can be recovered.
the universe has already recorded which path was taken before the hard drive was destroyed, in the quantum eraser experiment the path was never recorded 'by the universe'.
There I was thinking I finally got it until I saw your comments…