If only Jonas and Martha were in superposition states in the ending. Or if they are entangled in the quantum level than at least one of them should have existed in the ending
They both were in a state of entanglement (loop of two parallel worlds) until the last episode. However, in the last episode they destroyed the knot (loop) and erased the existence of entanglement.
Have to disagree with this video's claim that entanglement will someday allow us to send information or teleport someone instantaneously across the universe. The results of positions of entangled particles are indeed always opposite; however, they are also always randomly opposite. So this will never allow us to send deliberate patterns of information (coordinated 1's and 0's) because all the 1's and 0's will be random and meaningless, even if the pairs are always opposite.
+Ultimate Gamer Actually, when I first heard about this theory years ago I was astonished and went very excited to tell a friend. After I told the whole thing she just answered me ''well, has anyone already attempted to do the experiment?'' Yeah, I know...
I've been trying for years to wrap my head around quantum physics (like many people) and this video did a really good job of explaining it. So as I understand it now, quantum physics is something that occurs at an atomic level but at a macro level that we would observe in everyday life...
Removing the “both dead” and “both alive” possibilities seemed kind of arbitrary. That must be the part that is too difficult for us mere mortals to understand.
It has to do with conservation of momentum. If the system has a total spin of 1, you cannot end up with 2 particles with spin of 1 (alive cat) or 2 with 0 spin (dead cat).
From what I understood in a Veritasium video, since the total angular momentum in a universe must stay constant, if one particle spins up the other must spin down. Whether the cat is dead or alive represents the up or down spin of a particle. th-cam.com/video/ZuvK-od647c/w-d-xo.html @Safwan Baksh
@@safwanbaksh2224 From what I understood in a Veritasium video, since the total angular momentum in a universe must stay constant, if one particle spins up the other must spin down. Whether the cat is dead or alive represents the up or down spin of a particle. th-cam.com/video/ZuvK-od647c/w-d-xo.html
@@stevengreen4253 you seem to know what you're talking about so I'm going to ask you this question. Haha it's your punishment for being smart. Anyway. I'm a non physics trained just enjoyer of the topic. I conceptualize entanglement using a wishbone example. If you break the bone with a friend and hide the piece in your hand, you each have a 50/50 chance of having either piece (superposition?) If you go to the moon and look at your piece first, you put yours in position and consequently theirs too?
You could resolve this paradox by saying that this is technically not delivering information faster than the speed of light, because once we measure one of the cats state, we already know the state of the other one. So this isn't violating Einstein's rule of no information is able to deliver information faster than light.
Maybe like in a simulated game or a cartoon. The 2d or 3D characters have to follow the rules of space or physical interactions as ordained by the artist existing in a higher dimension(probably two dimensions higher). But suddenly the artist decides on a whim to make an object appear by painting or coding it. Then the characters, initially shocked that the appearing object has breached the rules, start realising that what they thought to be the rules was not law but rather illusory that had ways around them. They then start to find hacks; enlightenment, quantum computing, teleportation...
Chike Ezebilo I think the speed limit is only limited by perception, perhaps there is no speed limit but in order to perceive anything the mind has to draw the line and choose. for example, if you want to watch a snail race an asteroid, you have to make the decision to watch only one of them, as the asteroid would get so far ahead it can no longer be seen, or the snail so far behind.
mesure the total spin of two particles and when you then mesure their individual spins it must add up to the total. However the two particles spins are individual random but will always come out to add up to the corect total. So for instance, if two particles together have 0 spin then one particle must have spin 1 and the other spin -1 (this might corospond to spinning clockwise or counter clockwise). The total must be 0 and 1 + (-1) =0. But its random which will have spin 1 and which will have spin -1. So until you measure one of them each particle could be either 1 or -1 but once you mesure one of them you now know that it is 1 and the other is -1 or the reverse. This is true no matter how far apart they were seperated.
TheZzpop that's what I don't get. They both had to choose on or the other right when the box was closed to balance out so why do we say that the information is being transferred at the next measurement. We are measuring something that was decided when the lid was closed. Please help me understand this.
Blake Young Well, it actually isn't decided when the lid is being closed, that is a slight misconception that arises from the analogy in the video. In quantum mechanics the actual "collapse of the wave function" as it is called, happens when the particle is OBSERVED. What this means is that the particle is in two (or more) states at the same time until a measurement is made.
They don't need to communicate to one another because they were always spinning in opposite directions from the moment they became "entangled". We just didn'y know in which direction, but as soon as we measure, we now the direction the spin of both. In a way, both particles have the information of itself and the one entabgled to it, that's wh we dont need the to communicate. The thing is, we can't know the spins of the particles until we measure them, and when we measure them, we know the spins of both so they're no longer entangled. There's nothing we can do to pass information from one to the other, I dont see how teleportation is possible of faster than light communication.
You are correct, there is no FTL information flow here. The idea that "the particles are carrying the information" is not correct either, though. One can devise more complex scenarios (that's what the Bell inequalities are about) in which such a classical assumption leads to the wrong predictions. The simple fact is that quantum fields do not behave like classical fields and whenever we try to force such a model on them nature tells us that we are wrong. One has to make peace with that.
This is the best rendition (examples ; explanation) of super-position and entanglement I have ever heard Very well explained ...So well... That your almost giving away the whole secret And I do mean this seriously !!!
I realize you're probably joking but this is actually an important question in quantum physics, and the answer is no. You cannot actually influence of the other particle otherwise you'd be sending information faster than the speed of light which cannot be done this way. Entanglement doesn't actually have communication so it doesn't violate this principle and it only applies to limited measurements.
It doesnt necessarily have to be the other one being dead and the other being alive, the 2 cats were just in a superposition state. We'll only know the outcome if we observe it. But the thing that i dont understand is that the 2 possibilities were canceled out or was it just because they had a 50% chance of being dead or alive?
@@luckyturds6536 it is cancelled out due to entanglement. no matter what happens to the other box the entangled box will be the opposite of the other. so if one cat is dead then the other will be alive there's no way they both live nor dead
There's a very interesting, somewhat new theory about ER=EPR. The information travels through a wormholes, and from this emerges a physical reason for the quantization of space-time. If I can find the World Science Festival episode with it, I'll link it.
If memory serves, it's based on Hologram theory. I think the part I'm thinking of is about 2/3 of the way into the talk. th-cam.com/video/BFrBr8oUVXU/w-d-xo.html
Schrödinger's cat has always fascinated me, so thank you for this video, which made me think about this interpretation again. Firstly, the experiment to have connected particles at opposite ends of the universe has not been done. Secondly, the experiment described here has presumably only been done on earth or in the space station - we haven't travelled any further as far as I know. The video fails to explain how the linked particles are created. The idea of superposition is a concept derived from probability, not an actual state. In the macroscopic world, we do not always 'know' where something is: it may be at one point or it might be at another, but we do not assume that it is everywhere at once. We only know, where it is when we interact with the light rays bouncing off it or the reaction with some other sensor. If the object is moving, the object is in a slightly different position from the observed light rays, because of the tiny delay in the light or heat or radiation reaching our sensors. We are happy to agree in the macroscopic world, that we might not know where something is, but that someone else might. In the case of Schrödinger's cat, it is certain the cat does not think it is in superposition. It 'knows' whether it is alive. In the same way a particle knows, where it is, because its behaviour is determined by the interaction with all the other particles in the environment or the universe. We know where we are, because we know which other particles are affecting us. The concept of spin is very simplistic in the video, suggesting that you can match opposite rotations in a 2D fashion as if there was an orbital plane. I have read that electron spin about the nucleus is three dimensional, so I cannot understand how you can create 'opposite' spins. If someone does know, how to create opposite spin, I would be delighted to receive a response to this comment. If you don't know where a particle is until you observe it, how do you know that you are observing the same particle at the later stage of the experiment. How can you mark an electron, so that you know which of the pair you are observing? If the two particles are in separate boxes and this is how you tell them apart, how do you know that the opposite spins are not contingent on the properties of the container? If spin changes on a incredibly tiny time frame, it is possible that multiple longer term observations could still fail to spot the condition, where both particles are spinning in the same direction : is, both cats are alive, or both cats are dead. If the science of quantum entanglement has been done in a vacuum, then this may explain part of the difficulty of relating quantum mechanics to classical mechanics. The results of the experiment may tell us only about how particles relate in our experiment and not about how they react under other real-world conditions. This is a good video for explaining how physicists have tried to make sense of the world.
Though I haven't started learning any of the quantum mechanics equations or anything I find it very easy to understand and interpret most of the ideas of quantum mechanics
lol, allow me to suggest you take an MBTI test (free online everywhere). If my 'theory' is correct, you are an INTJ. I understand quantum theory or so I think I grasp the concepts and this drives every math person in my life insane because I have always been challenged by Math unless a sales discount was involved and yet, I can speak Quantum leap and I never once watched that old tv show. Seriously, you may lead with Ni dom in the Carl Jungian information processing cognitive function stacks. Have you read Nietzsche?
It is an old saying” if you can not explain it to a child then you do not know it “ , that is what this video is like a very simple explanation that everybody understands. Thanks
Quantum entanglement pretty much proves monistic idealism, an existential theory that states consciousness is the primary "stuff" of reality and that matter and energy are just a projection. Please read The Self-Aware Universe by Amit Goswami if you would like to explore this concept.
No it does not. What you, and probably this guy you're talking about, do is mixing observation and consciousness. In physics an observation doesn't need a conscious mind. It is more of an interaction between particles. So your theory is just like any other claim of this sort, interesting to think about but not proven by science in any way.
Corentin Vacheret I wouldn't even call it interesting... Seems incredibly narcissistic and pretentious to believe that humans being conscious is what created matter or... a "projection" of matter... I mean really... how arrogant do you need to be to claim that humans are sooo special their minds are what created the cosmos or at least the matter within it.. It doesn't even make sense... modern humans have existed for 200,000 years and all hominids 6-7 million... The universe 13.7 billion... So unless he plans on claiming that humans consciousness is what created humans and the universe (which equally makes no sense) then it doesn't make sense.
pauli's exclusion principle states that if one of the two electrons in an orbital have up spin then the other can only have down spin (opposite spins). Similiarly, if one cat is alive the other has to be dead.
It's because the result will be certain. There is a 50% probability of the cat dying (or living). If both live (or die) then you're certain that the cat is either dead or alive.
Superposition is similar to a pebble dropped into water will form ripples that are not random; the waves are relative and synchronized as they radiate out from their centre source. In this theory, time has a similar geometry based on Huygens’ Principle: That says: “Every point on a wave front may be considered a source of secondary spherical 4πr² wave, which spreads out in the forward direction at the speed of light”. The light waves only move in the forward direction because we have an uncertain ∆×∆pᵪ≥h/4π future continuously coming into existence with the exchange of light photon ∆E=hf energy forming new spherical waves of probability. The wave particle nature of light and matter in the form of electrons is forming an interactive process or what I like to call a blank canvas that we can interact with. Light photon ∆E=hf energy is continuously transforming potential energy into the kinetic Eₖ=½mv² energy of matter, in the form of electrons. Kinetic energy is the energy of what is actually ‘happening’. The dynamic geometry of this process forms an uncertain ∆×∆pᵪ≥h/4π probabilistic future continuously unfolding relative to the electron probability cloud of the atoms and the wavelength of the light.
Quantum entanglement allows for multiple universes. One for each outcome of each decision/path taken. One universe where you were never born. One where you died at birth. One where your mother died at birth and you continued on. One were you were raised Catholic. One were you were raised as a Pagan. One were you died in a car crash, the other not. I like the idea that I'm like Jared Leto in the movie "Mr. Nobody"; where I live all possibilities, but the one I choose to live out is the one where I make it to the end. In other people's reality, I may be a different person.
Okay so in Quantum entanglement one subatomic particle spinning one way then the other has to spin the exact opposite, but what connects the two? Plus how is it detected 3D and not just in 2D? There isn't just only two particles that make up the universe. Also if there was a way to reverse the way the subatomic particle spins isn't it possible to use this method to transfer information faster than the speed of light?
They aren't actually spinning... I think he was just trying to explain it in a simple way for people to understand. Fermions, Bosons, Electrons etc... have an integer spin known by it's quantum number which aren't real euclidean vector quantities Wikipedia may say "In quantum mechanics and particle physics, spin is an intrinsic form of angular momentum carried by elementary particles, composite particles (hadrons), and atomic nuclei" but it then says "it does not have a counterpart in classical mechanics (despite the term spin being reminiscent of classical phenomena such as a planet spinning on its axis)." Spin is more a position or state. EDIT: and to answer your question about what connects subatomic particles... that would be the strong and weak force. Oh and your other question... No because the speed of light is only the limit set for information to travel.
All: If I may add... The way it was presented to me, this is a one time use phenomenon. However, if you had an incredible amount of entangled pairs; you could, conceivably, instantly relay a simple statement. ONLY EASY if you can observe and not disturb.
Uhh I understood uncertainty of position and momentum and Schrödinger's cat thought experiment. Thank you TedEd. And those people who think our force of observation collapses nature to one of either probabilities is not for the cat. It's just a thought experiment to help understand the movement and behaviour of electrons around the nucleus.
The question is: How did you know that the cat is in a superposition of 'alive' and 'dead' instead of one fixed state before you observe it. This is the core difference between classic physics and quantum mechanics, and have been often ignored in this type of videos. I knew there are a few VERY COMPLECTED experiments involving measuring polarity/spin states of photons with 50% chance of this and 50% chance of that, but these experiments are often tooooooo tricky and tooooo complicated to explain, and definitely need to repeat and testify by different labs. I am not convinced with the 'fact' of quantum entanglements. I agree the idea of 'superposition' can help us to explain and predict many things, but we can't measure those properties doesn't necessarily mean uncertainty is an inherent property of the quantum world. These two theory are fundamentally contradictory and only one of them is true. I am on the side of Einstein.
Two points to make. First the bomb is detonated by a microscopic or quantum mechanical event such as an alpha particle hitting some nitrogen tri-iodide. Second entanglement is most apparent with spin measurements with the detectors oriented at oblique angles like 45 degrees. That's when information of some sort has to travel at superluminal speed.
Again plot twist, if we are the cat some one is observing us and some one is observing our observer as well and so on unless we reach a cosmic observer, which is observing all the cosmos, sitting outside the cosmos, so the cosmic observer has set up rules for this simulation which we are in and programmed every thing from paths of stars to laws of physics to coding found in our DNA, in simplified language this proves existence of GOD.
The experiment is usually conducted with a poisonous radioactive isotope that has a 50% chance of decaying and killing the cat inside the box over the course of an hour. I'm assuming the narrator was attempting to simplify the experiment, but the substitute explosion does tend to confuse things. Edit: And when we say this experiment is conducted, we're referring to it as a THOUGHT experiment... Scientists aren't really killing any cats at all, except in their minds I suppose
Schrödinger's cat walks into a bar.
And doesn't.
Will G.
Noice
Copied from jacksfilms
@@adorableteddy9328 what's jacksfilms
how do u know
@@warker6186 yeah
Schrodinger: So do you want to live or die?
Cat: *Yesn't*
Lol😂
b o t h
Loollll
I used this word at my "convent school", they kicked me out for 2 periods straight
@₿ΣΛƬƧ yupn't
*No cats were killed during this video*
however,
*Cats were killed during this video*
+Marvel James 😂😂 gosh😆😆😆
Schrödinger's murder
Lol
Well yes, but actually no
@@twentyninedoesnotlastforev5455 and vice versa
How to make a theory complicated :
*Add "Quantum" in it*
I would say adding cats on it. It is really bad explained.
It sounds good though
Screen junkies
quantum trump
👌
The animation is absolutely adorable. Well done Dan Pinto!
This is what "Curiosity killed the cat" really means - "[The] Curiosity [of a physicist by the name of Schrödinger] killed the [physicist's] cat."
+Mr. Gecko
LOL! Makes sense though.
I guess so
hypothetical FUCKING scenario, this is the THIRD FUCKING TIME
HEY VSAUCE! @Le Fedora Cate HERE
Killed in a curiosity box
Jonas is dead and yet Jonas is alive too.
That's the Schrodinger's Jonas
If only Jonas and Martha were in superposition states in the ending. Or if they are entangled in the quantum level than at least one of them should have existed in the ending
They both were in a state of entanglement (loop of two parallel worlds) until the last episode. However, in the last episode they destroyed the knot (loop) and erased the existence of entanglement.
Same as claudia
@@clementeen Jonas existed as Hannah is going to give birth to Jonas :)
Joydeep Das noone can create same jonas except for michael and hannah it’s genetics
Narrator: "the everyday world u know and love.."
Me: bold of u to assume-
+1
·-·'
"One does not simply. . . . Assume so."
Have to disagree with this video's claim that entanglement will someday allow us to send information or teleport someone instantaneously across the universe. The results of positions of entangled particles are indeed always opposite; however, they are also always randomly opposite. So this will never allow us to send deliberate patterns of information (coordinated 1's and 0's) because all the 1's and 0's will be random and meaningless, even if the pairs are always opposite.
Finally someone that points this out
I do love the world tho don’t get me wrong
A physicist who doesn't particularly like cats, puts a cat in a box..... Along with a bomb.
*They had us in the first half, not gonna lie*
You joke is like attention
I don't get it
why do they need to put it in the box
it's already in it
or is it???
@@humanbeing9946 Vsauce
cat exists
schrodinger: im about to end this cats whole career, or am I?
Hey, Micheal Vsauce here
Hey Vsause , Micheal here
Here Micheal, Vsauce hey
Here Vsauce, Micheal hey
Vsauce here , Hey Michael
Cat experiment was a thought experiment. No cats were harmed.
They should mention it in the video.
+Ultimate Gamer Actually, when I first heard about this theory years ago I was astonished and went very excited to tell a friend. After I told the whole thing she just answered me ''well, has anyone already attempted to do the experiment?''
Yeah, I know...
+Andrey Pavlov they did. they said it was a thought experiment. chill out
Where are your dogs? I hope they weren't harmed in your Operant Conditioning Experiment as well :)
Yeah
Hi peta!
As a cat I find this video offensive.
Report if for racism.
Not all physicist support catocide!
I am offensive and I find this box.
Just to annoy shiben..... months later
But it was a thought experiment, not a real test.
u wot m8 ?
I've been trying for years to wrap my head around quantum physics (like many people) and this video did a really good job of explaining it. So as I understand it now, quantum physics is something that occurs at an atomic level but at a macro level that we would observe in everyday life...
TH-cam recommended to me because of DARK series!!!
🤣🤣
I saw this bcoz of dark series
Same here ...lol
Me too😆
Me too
Before watching this video I was confused, and now I'm still confused
still better than going into a superposition of confused and not confused at the same time
@@royhsieh4307 love the reply. Lol
No, you are both confused and not confused...
Same
"If you are not confused, then you are not thinking."
-Sir Albert Einstein.
*At ending*
"Maybe your cat will teleport to another safer Galaxy, with no boxes."
Me: But cats love boxes..
Lol. Amazon is my kitties best friend.
No, cats love and hate boxes at the same time!
Not the one with bomb
@@anteater9408They only love it when they're comfortable inside it , no way a cat would lova a box with Bombs.... I guess??
I think Einstein disliked this video 117 times.
155
Yes. He is still alive in some other universe and this is his spooky action from a distance. :)
vikram fugro So he must have liked the vid in other universe.
+rai ZOR
Why would he? He was working on the fundamentals of quantum mechanics before he died.
Dracstar apparently he wasn't a fan of quantum entanglement.
Removing the “both dead” and “both alive” possibilities seemed kind of arbitrary. That must be the part that is too difficult for us mere mortals to understand.
if you find out why they did that please let me know
It has to do with conservation of momentum. If the system has a total spin of 1, you cannot end up with 2 particles with spin of 1 (alive cat) or 2 with 0 spin (dead cat).
From what I understood in a Veritasium video, since the total angular momentum in a universe must stay constant, if one particle spins up the other must spin down. Whether the cat is dead or alive represents the up or down spin of a particle. th-cam.com/video/ZuvK-od647c/w-d-xo.html @Safwan Baksh
@@safwanbaksh2224 From what I understood in a Veritasium video, since the total angular momentum in a universe must stay constant, if one particle spins up the other must spin down. Whether the cat is dead or alive represents the up or down spin of a particle. th-cam.com/video/ZuvK-od647c/w-d-xo.html
@@stevengreen4253 you seem to know what you're talking about so I'm going to ask you this question. Haha it's your punishment for being smart. Anyway. I'm a non physics trained just enjoyer of the topic. I conceptualize entanglement using a wishbone example. If you break the bone with a friend and hide the piece in your hand, you each have a 50/50 chance of having either piece (superposition?) If you go to the moon and look at your piece first, you put yours in position and consequently theirs too?
**Schrödinger has entered the chat**
-**Einstein has exited the chat**
So true.
-*Or cats have exited the chat*
You could resolve this paradox by saying that this is technically not delivering information faster than the speed of light, because once we measure one of the cats state, we already know the state of the other one. So this isn't violating Einstein's rule of no information is able to deliver information faster than light.
@@manelnhl4393 *-Cats may or may not have exited the chat*
Shake the box, u will know either the cat is alive or dead without opening😂😂😂
smh😂😂
You might be onto something here 😂😂😂
schrodinger, i guess, wasn't as smart as you 😂😂
Sooooooo true looolz deserve to win a novel prize
that count as "observe" as well
well ok i know youre joking im sorry
They sud have explained why Quantum physics rules out both cat dead (or alive) scenario
+Himanshu Kumar Yeah, I still don't understand that part.
That's the point. They don't know.
Pauli Exclusion Principle :)
+Himanshu Kumar because when two particles are entangled, they influence each other in opposite ways
does the cat analogy mention that both cats are entangled ?
I am so surprised I don't see a single comment specifically about how cute the cats are. THEY ARE JUST TOO DAMN CUUUUTE!!!
Actually I never thought cats looked good in glasses.
NErdy cats lol
Until they poo through their mouth
are you a cat video watcher and youTube recommended you this ?
IKRRRRR
Quantum physics always make my brain hurt. x_x
+J.H. Lee it just feels like there is something really wrong with it
+J.H. Lee I'm with you. last 2 weeks i have been studying on this thing.
Maybe like in a simulated game or a cartoon. The 2d or 3D characters have to follow the rules of space or physical interactions as ordained by the artist existing in a higher dimension(probably two dimensions higher). But suddenly the artist decides on a whim to make an object appear by painting or coding it. Then the characters, initially shocked that the appearing object has breached the rules, start realising that what they thought to be the rules was not law but rather illusory that had ways around them. They then start to find hacks; enlightenment, quantum computing, teleportation...
And it's because you delve too much into details, let it go...
Because the law of physics in the universe does not care what your brain is capable of.
Now I am in a superposition of understanding quantum mechanics and not understanding it
After 5 years this video got too much attention because of Netflix's DARK.
I wish there is a video like this about spin of particles.
It will be fascinating to understand the spin with a cat explaining.
I mean I understood the story of cats well until he said “ quantum “
so at the moment he added the word quantum to the story, u have reached the superposition.
Wow that’s true.
Now, this raised even more questions in my mind.
Roronoa Zoro raised nothing in mine
no it doesn't.
now u r in position.
Me : Is your cat alive or dead ?
Schrodinger : Um , it is actually ...
Meanwhile cat from box : Meow !
And after studying it deeply The Germans created the 'Dark' series and messed up our minds. Such a powerful stuff.
they got Schrodinger Cat very wrong, even this video does. today 90% of so called Science Enthusiast propagate this experiment in a wrong way!
"The everyday world you ... love..."
Making a lot of assumptions there chief... Who can love a world with a universal speed limit?
+magicstix0r what a stupid reason to not LOVE
+magicstix0r Nothing can exist without limitations... sooo
Could the universe have existed without a universal speed limit?
Chike Ezebilo I think the speed limit is only limited by perception, perhaps there is no speed limit but in order to perceive anything the mind has to draw the line and choose.
for example, if you want to watch a snail race an asteroid, you have to make the decision to watch only one of them, as the asteroid would get so far ahead it can no longer be seen, or the snail so far behind.
Slinky Drinky okay, but if that's the case, how come we all perceive exactly the same result everywhere in the universe?
I wish I had been taught quantum chemistry like that.
.. so how do things become entangled? also, how do scientists find two entangled particles? is there a way to force entanglement upon two particles?
+1, been thinking of this for a long time.
exactly. withou answering your question, the lesson is worthless.
mesure the total spin of two particles and when you then mesure their individual spins it must add up to the total. However the two particles spins are individual random but will always come out to add up to the corect total. So for instance, if two particles together have 0 spin then one particle must have spin 1 and the other spin -1 (this might corospond to spinning clockwise or counter clockwise). The total must be 0 and 1 + (-1) =0. But its random which will have spin 1 and which will have spin -1. So until you measure one of them each particle could be either 1 or -1 but once you mesure one of them you now know that it is 1 and the other is -1 or the reverse. This is true no matter how far apart they were seperated.
TheZzpop that's what I don't get. They both had to choose on or the other right when the box was closed to balance out so why do we say that the information is being transferred at the next measurement. We are measuring something that was decided when the lid was closed. Please help me understand this.
Blake Young Well, it actually isn't decided when the lid is being closed, that is a slight misconception that arises from the analogy in the video. In quantum mechanics the actual "collapse of the wave function" as it is called, happens when the particle is OBSERVED. What this means is that the particle is in two (or more) states at the same time until a measurement is made.
*No cars were harmed in making of this video*
They don't need to communicate to one another because they were always spinning in opposite directions from the moment they became "entangled". We just didn'y know in which direction, but as soon as we measure, we now the direction the spin of both. In a way, both particles have the information of itself and the one entabgled to it, that's wh we dont need the to communicate.
The thing is, we can't know the spins of the particles until we measure them, and when we measure them, we know the spins of both so they're no longer entangled. There's nothing we can do to pass information from one to the other, I dont see how teleportation is possible of faster than light communication.
You are correct, there is no FTL information flow here. The idea that "the particles are carrying the information" is not correct either, though. One can devise more complex scenarios (that's what the Bell inequalities are about) in which such a classical assumption leads to the wrong predictions. The simple fact is that quantum fields do not behave like classical fields and whenever we try to force such a model on them nature tells us that we are wrong. One has to make peace with that.
Schrodinger:I don't know if cat is dead or alive
Cat:meow!
Schrodinger:shut up!
funny thing is, that was exactly the point he was trying to prove: quantum decoherence.
Me: Do you guys just put *Quantum* in front of everything?
Ohhh just remembered, Sheldon Cooper already explained this Cat thing to me
5:06 OMG SO CUTEEEE!!!
0:58 whoa, that’s quite a leap in thought
That little cat wink at the end near about killed me
The example at the start does not make sense to me because any time i throw a ball it will either land on my head, foot or i just will lose it
Who came here after watching "Dark" Season 3?
Me
I came here after watching seishun buta yarou
see no relate between this theory and this tv show, can you explain for me🤔
@@tronganhvu7614 Dark season 3 is based on Quantum Entanglement.
My brain is in tangles
This is the best rendition (examples ; explanation) of super-position and entanglement I have ever heard Very well explained ...So well... That your almost giving away the whole secret And I do mean this seriously !!!
Appreciate the cool animation they did for the video.... Great concepts made understanding with simple and funny graphics....
If you could resurrect one cat would the other one die instantly ?
I realize you're probably joking but this is actually an important question in quantum physics, and the answer is no. You cannot actually influence of the other particle otherwise you'd be sending information faster than the speed of light which cannot be done this way. Entanglement doesn't actually have communication so it doesn't violate this principle and it only applies to limited measurements.
It doesnt necessarily have to be the other one being dead and the other being alive, the 2 cats were just in a superposition state. We'll only know the outcome if we observe it. But the thing that i dont understand is that the 2 possibilities were canceled out or was it just because they had a 50% chance of being dead or alive?
@@luckyturds6536 it is cancelled out due to entanglement. no matter what happens to the other box the entangled box will be the opposite of the other. so if one cat is dead then the other will be alive there's no way they both live nor dead
alstone morales how / why are they entangled though?
Dont be too serious about it leave it to scientists to get some another animal killed😂😂
If it's true, we do live in a simulation, where everything is already predicted.
4:21 i think there's a way of information transfer it's just that we haven't discovered that yet
There's a very interesting, somewhat new theory about ER=EPR. The information travels through a wormholes, and from this emerges a physical reason for the quantization of space-time. If I can find the World Science Festival episode with it, I'll link it.
If memory serves, it's based on Hologram theory. I think the part I'm thinking of is about 2/3 of the way into the talk.
th-cam.com/video/BFrBr8oUVXU/w-d-xo.html
In an alternate universe, cats are doing this thought experiments on humans.
What did the cat do to get a death sentence?
Schroedinger probably didn't like cats. Don't worry. This is a Gedankenexperiment. No cats were harmed while Schroedinger wrote this nonsense. ;-)
Schrödinger's cat has always fascinated me, so thank you for this video, which made me think about this interpretation again.
Firstly, the experiment to have connected particles at opposite ends of the universe has not been done. Secondly, the experiment described here has presumably only been done on earth or in the space station - we haven't travelled any further as far as I know.
The video fails to explain how the linked particles are created.
The idea of superposition is a concept derived from probability, not an actual state. In the macroscopic world, we do not always 'know' where something is: it may be at one point or it might be at another, but we do not assume that it is everywhere at once. We only know, where it is when we interact with the light rays bouncing off it or the reaction with some other sensor. If the object is moving, the object is in a slightly different position from the observed light rays, because of the tiny delay in the light or heat or radiation reaching our sensors. We are happy to agree in the macroscopic world, that we might not know where something is, but that someone else might. In the case of Schrödinger's cat, it is certain the cat does not think it is in superposition. It 'knows' whether it is alive. In the same way a particle knows, where it is, because its behaviour is determined by the interaction with all the other particles in the environment or the universe. We know where we are, because we know which other particles are affecting us.
The concept of spin is very simplistic in the video, suggesting that you can match opposite rotations in a 2D fashion as if there was an orbital plane. I have read that electron spin about the nucleus is three dimensional, so I cannot understand how you can create 'opposite' spins. If someone does know, how to create opposite spin, I would be delighted to receive a response to this comment.
If you don't know where a particle is until you observe it, how do you know that you are observing the same particle at the later stage of the experiment. How can you mark an electron, so that you know which of the pair you are observing? If the two particles are in separate boxes and this is how you tell them apart, how do you know that the opposite spins are not contingent on the properties of the container? If spin changes on a incredibly tiny time frame, it is possible that multiple longer term observations could still fail to spot the condition, where both particles are spinning in the same direction : is, both cats are alive, or both cats are dead.
If the science of quantum entanglement has been done in a vacuum, then this may explain part of the difficulty of relating quantum mechanics to classical mechanics. The results of the experiment may tell us only about how particles relate in our experiment and not about how they react under other real-world conditions.
This is a good video for explaining how physicists have tried to make sense of the world.
Beautiful
*TH-cam knew what’s in my textbooks better than myself* 😨😂
Though I haven't started learning any of the quantum mechanics equations or anything I find it very easy to understand and interpret most of the ideas of quantum mechanics
lol, allow me to suggest you take an MBTI test (free online everywhere).
If my 'theory' is correct, you are an INTJ.
I understand quantum theory or so I think I grasp the concepts and this drives every math person in my life
insane because I have always been challenged by Math unless a sales discount was involved and yet,
I can speak Quantum leap and I never once watched that old tv show.
Seriously, you may lead with Ni dom in the Carl Jungian information processing cognitive function stacks.
Have you read Nietzsche?
It is an old saying” if you can not explain it to a child then you do not know it “ , that is what this video is like a very simple explanation that everybody understands. Thanks
If u never open the box, the cat starves to death
So,quantum entanglement is basically a long distance relationship!
agar aisa hai toh pakka katega
@@shanubhau8629 Tera kata hua lagta hai😂😂
@@shanubhau8629 lmaoooo
@@sannathbehere2623 han bhai
Wow! I suddenly start to love physics after watching the Dark series!
Yes. I'm here from Ant-Man and The Wasp.
I'm here from my mom
SAMEE!!! I just finished the moviee ;_;
Legends says cat is still waiting for some one to open that box.
I watch these videos for sleep theyre mad relaxing
its strange how youtube recommended me this video while i was watching The Big Bang Theory, where they were pulling a joke on Schrodinger’s cat
The method of explaining the topics is really very good. Some more videos regarding quantum physics will be really appreciated
'You and I are perfect for each other. Never believe anything else' - Quantum Entanglement
Schrödinger's cat: "And I took that personally "
I can't belive a 2 year struggle could be solved with a 5 minute video. Like where was that 2 years ago! 🤣
this is one of the highest quality vids from TEDed yet.
I just looked at the cat the whole time :/
"Quantum entanglement"
Will Smith: Where do I begin?
You'll know the cat is alive when it starts to meow. 🤣
I didn't realize before this how absolutely beautiful and mind-blowing science is.
Quantum entanglement pretty much proves monistic idealism, an existential theory that states consciousness is the primary "stuff" of reality and that matter and energy are just a projection. Please read The Self-Aware Universe by Amit Goswami if you would like to explore this concept.
Lol, someone has an elementary grasp of Quantum Mechanics... been watching too much Deepak Chopra have we?
This channel is about physics not philosophy
Gary Merchant I wouldn't call that philosophy... more like random guessing
No it does not. What you, and probably this guy you're talking about, do is mixing observation and consciousness. In physics an observation doesn't need a conscious mind. It is more of an interaction between particles. So your theory is just like any other claim of this sort, interesting to think about but not proven by science in any way.
Corentin Vacheret I wouldn't even call it interesting... Seems incredibly narcissistic and pretentious to believe that humans being conscious is what created matter or... a "projection" of matter... I mean really... how arrogant do you need to be to claim that humans are sooo special their minds are what created the cosmos or at least the matter within it..
It doesn't even make sense... modern humans have existed for 200,000 years and all hominids 6-7 million... The universe 13.7 billion...
So unless he plans on claiming that humans consciousness is what created humans and the universe (which equally makes no sense) then it doesn't make sense.
There's a lot of entanglement going on these days...
Knowing that one day your cat will escape to a safer galaxy where there are no physicists and no boxes, fills you with determination.
Is this undertale reference?🌚
@@sennahdominique1178 I MADE THIS COMMENT 2 YEARS AGO?!😦🤣
Yeaaaa time flies 👀
@@sennahdominique1178 ;-;
@@sennahdominique1178 undertale fan? can we be friends? :))
Schrodinger's cat
*WANTED*
Dead or alive
No cat has been blasted while making this video!!
He's been safely teleported to the other universe
and he forgot to bring his tail with him, it still inside the box😐
Soooo I just tried this experiment,and now my room is filled with smoke and cat guts...
Shouldn't have opened the box.
+Anthony Hayes lol 😂😂😂
Results pls both alive or dead
"So is the cat alive?"
"Yes'nt"
I didn't understand how he eliminated 2 probabilities (2 dead or 2 alive). Can someone explain?
pauli's exclusion principle states that if one of the two electrons in an orbital have up spin then the other can only have down spin (opposite spins). Similiarly, if one cat is alive the other has to be dead.
Ok ,but why?
It's because the result will be certain. There is a 50% probability of the cat dying (or living). If both live (or die) then you're certain that the cat is either dead or alive.
@@nicky09yash , ah, ok, thank you !
@@nicky09yash How does it become certain? You will know both cats are alive only after checking both boxes.
Superposition is similar to a pebble dropped into water will form ripples that are not random; the waves are relative and synchronized as they radiate out from their centre source. In this theory, time has a similar geometry based on Huygens’ Principle: That says: “Every point on a wave front may be considered a source of secondary spherical 4πr² wave, which spreads out in the forward direction at the speed of light”. The light waves only move in the forward direction because we have an uncertain ∆×∆pᵪ≥h/4π future continuously coming into existence with the exchange of light photon ∆E=hf energy forming new spherical waves of probability. The wave particle nature of light and matter in the form of electrons is forming an interactive process or what I like to call a blank canvas that we can interact with. Light photon ∆E=hf energy is continuously transforming potential energy into the kinetic Eₖ=½mv² energy of matter, in the form of electrons. Kinetic energy is the energy of what is actually ‘happening’. The dynamic geometry of this process forms an uncertain ∆×∆pᵪ≥h/4π probabilistic future continuously unfolding relative to the electron probability cloud of the atoms and the wavelength of the light.
@2:53 Why is it possible to erase "both cats dead" and "both cats alive"? I was okay up to that point. Why are they not valid superposition states?
Because the rate of life and death is 50/50. If both are dead, the rate is wrong.
Quantum entanglement allows for multiple universes. One for each outcome of each decision/path taken. One universe where you were never born. One where you died at birth. One where your mother died at birth and you continued on. One were you were raised Catholic. One were you were raised as a Pagan. One were you died in a car crash, the other not. I like the idea that I'm like Jared Leto in the movie "Mr. Nobody"; where I live all possibilities, but the one I choose to live out is the one where I make it to the end. In other people's reality, I may be a different person.
I love they made all 'humans' cats in this vid 😂
😹😹😹
Okay so in Quantum entanglement one subatomic particle spinning one way then the other has to spin the exact opposite, but what connects the two? Plus how is it detected 3D and not just in 2D? There isn't just only two particles that make up the universe. Also if there was a way to reverse the way the subatomic particle spins isn't it possible to use this method to transfer information faster than the speed of light?
Re the first part, we don't know.
Re the last part, that was what they meant by the cat escaping. Instantaneous teleportation
They aren't actually spinning... I think he was just trying to explain it in a simple way for people to understand.
Fermions, Bosons, Electrons etc... have an integer spin known by it's quantum number which aren't real euclidean vector quantities
Wikipedia may say "In quantum mechanics and particle physics, spin is an intrinsic form of angular momentum carried by elementary particles, composite particles (hadrons), and atomic nuclei"
but it then says "it does not have a counterpart in classical mechanics (despite the term spin being reminiscent of classical phenomena such as a planet spinning on its axis)."
Spin is more a position or state.
EDIT: and to answer your question about what connects subatomic particles... that would be the strong and weak force.
Oh and your other question... No because the speed of light is only the limit set for information to travel.
All: If I may add... The way it was presented to me, this is a one time use phenomenon. However, if you had an incredible amount of entangled pairs; you could, conceivably, instantly relay a simple statement. ONLY EASY if you can observe and not disturb.
John Hightower Have no idea what you're saying...
***** What part?
The two both alive and both dead entanglement meant that for any subatomic particle , it's impossible to find it at two quantum states .
Uhh I understood uncertainty of position and momentum and Schrödinger's cat thought experiment. Thank you TedEd.
And those people who think our force of observation collapses nature to one of either probabilities is not for the cat. It's just a thought experiment to help understand the movement and behaviour of electrons around the nucleus.
The question is: How did you know that the cat is in a superposition of 'alive' and 'dead' instead of one fixed state before you observe it. This is the core difference between classic physics and quantum mechanics, and have been often ignored in this type of videos. I knew there are a few VERY COMPLECTED experiments involving measuring polarity/spin states of photons with 50% chance of this and 50% chance of that, but these experiments are often tooooooo tricky and tooooo complicated to explain, and definitely need to repeat and testify by different labs. I am not convinced with the 'fact' of quantum entanglements.
I agree the idea of 'superposition' can help us to explain and predict many things, but we can't measure those properties doesn't necessarily mean uncertainty is an inherent property of the quantum world. These two theory are fundamentally contradictory and only one of them is true. I am on the side of Einstein.
I agree with you.
I was about to post a joke on quantum mechanics but it is funny and unfunny at the same time.
I have been explained so many times what "quantum" means,and this is the first time i can say that i understand.
Thank you.
Quantum refers to things at a scale where mass and energy exist in discrete amounts called "quanta."
Two points to make. First the bomb is detonated by a microscopic or quantum mechanical event such as an alpha particle hitting some nitrogen tri-iodide. Second entanglement is most apparent with spin measurements with the detectors oriented at oblique angles like 45 degrees. That's when information of some sort has to travel at superluminal speed.
The pause before the cat wink in the ending though
Plot twist! We are the cats
No plot twist at all... this concept applies to everything in our lives: information only has a real value when measured.
Precisely!
Again plot twist, if we are the cat some one is observing us and some one is observing our observer as well and so on unless we reach a cosmic observer, which is observing all the cosmos, sitting outside the cosmos, so the cosmic observer has set up rules for this simulation which we are in and programmed every thing from paths of stars to laws of physics to coding found in our DNA, in simplified language this proves existence of GOD.
The beginning is the end
Why not the forest road
The End is the Beginning
Haha Dark
Schrödinger's smile/frown for you - :(:
Yeah, Imma just say that the kitty design was just adorable
The animation of this video is better than any of your other videos.
How the fuck would you not know if a bomb went off inside the box until you open the lid? There wouldn't even be a box left for you to look at.
The experiment is usually conducted with a poisonous radioactive isotope that has a 50% chance of decaying and killing the cat inside the box over the course of an hour. I'm assuming the narrator was attempting to simplify the experiment, but the substitute explosion does tend to confuse things. Edit: And when we say this experiment is conducted, we're referring to it as a THOUGHT experiment... Scientists aren't really killing any cats at all, except in their minds I suppose
Finished watching dark yesterday
TH-cam today:
I know you are here because TH-cam recommended you after watching Dark S3
Mind blowing theory and crystal explanation.
Oh dear. I'm having my Sunday night, TH-cam video binge, existential crisis again