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Macro quantum effects: Why don’t balls act like atoms in double slit?

Macro quantum effects: Why don’t balls act like atoms in double slit?


If you’ve been watching any of my videos on quantum mechanics, then you
know that the smallest particles in nature behave in some very strange ways.
These particles include things like photons, electrons, atoms, even some
molecules. You know that observation is synonymous with measurement. The double slit experiment shows that they behave like waves of probability when not
measured. And quite strangely, when measured, these probability waves collapse so that
they become distinct particles. We also see from experiments like the delayed
choice quantum eraser, that two particles can become entangled, meaning that they
appear to be somehow intimately connected through the sharing of one
probability wave, even if the particles are separated apart in space-time. And
this behavior seems really strange to us because this is not something that we
observe in our macro world. But why is that? Why don’t we see this kind of
strange and mysterious behavior in our everyday lives? Why doesn’t this tennis
ball behave like a photon, or an electron, or an atom? At what point does the
quantum behavior stop, and classical behavior of everyday objects like this
begin? And why is there cutoff? The explanation is coming up right now… Scientists have shown quantum behavior
in particles as large as molecules containing hundreds (*thousands as of late 2019) of atoms. How large a particle can you get, and still show quantum behavior? What if I take this
tennis ball and throw it at a double slit, with a screen behind it that
records a position of the ball when it hits the screen? What if I take thousands
of these tennis balls and throw it at a double slit? Will I see the same kind of
behavior that electrons or atoms have? No, of course not! I’ll just see two patterns
on the back wall. Why doesn’t this thing behave like electrons or atoms? It’s made
up of atoms and electrons around it – six trillion trillion atoms. Why doesn’t the whole behave like the individual particles it’s made up of? To answer this
we have to understand some of the basics of quantum mechanics. Let’s look at how
the double slit experiment works with light first. The results are the same
with electrons or atoms. Richard Feynman called this, “the central mystery of
quantum mechanics.” When we shine a monochromatic light, that is light of
only one wavelength, through two slits, as light hits the screen, we see an
interference pattern on the other side, because as the waves spread out, the crest
of one wave hits the crest of another, it becomes stronger. Where a crest hits a
trough, it will cancel. This should be no big mystery. This is not quantum
mechanics. This is just a property of waves.
It’ll happen with water waves too. Now, what if we lower the intensity of the
light, and keep lowering it until our light source emits only one photon at a
time? Surely this should not create a wave
pattern! When we shoot one photon at a time, it forms a dot on the screen. But if
you fire enough of them, thousands or millions of photons, what you find is
that collectively, the photons form the same interference pattern. So somehow the photon either interacts with itself, or somehow is able to communicate its part
in the interference pattern when fired one at a time. So since we want to find
out what’s going on at the slits, what if we put a detector there to determine
whether the photon goes through slit 1 or slit 2? This is the most startling
result of quantum mechanics, because when you try to find out which path
the photon took, the interference pattern disappears! The photon appears to now
behave like a particle, instead of a wave. So what’s going on? Let’s talk in the
language of the Copenhagen interpretation, which is the most
accepted interpretation of quantum mechanics. This was conceived by Niels
Bohr and Werner Heisenberg at the University of Copenhagen around 1927.
This interpretation basically says that these so-called particles are not
particles at all, but really like clouds. They are in multiple states at the same
time. They’re like waves 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 at any point 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 is seen by anyone or not, the particles
become distinct, and do not display wave-like behavior. The same behavior has
been found in subsequent years with electrons, atoms and even molecules
composed of as many as 800 atoms (*2000+ as of 2019). The same interference pattern forms, and the same collapse occurs if their which-path information is measured. A measurement
always collapses the wave. So what is a measurement? A measurement is a formation of any physical record of which path the particle takes. It’s not about conscious
observers. It’s about a record made in the universe even if no one is looking.
It is such that a forensic exam, if we had even the most sensitive quantum
tools, could establish which path the particle took. You never have to look at
the information. You can even destroy the information, before you look at it, like
burn it, or destroy the hard drive that it’s on. The wave will still collapse,
because the universe already recorded it. Why is it recorded even if you destroyed it?…because theoretically, you could go back in time and see the path. The universe
will say, “hey, I already know the path. Now it’s a
particle. You can’t have your wave back.” The path has to be taken in absolute
secrecy. 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, as I said, this happens with photons, electrons,
atoms, and even large molecules. Now, what if we do this with really large
particles, like grains of sand, which by the way, are typically composed of
quintillions of atoms, or tennis balls? Will we see the same pattern?…of course
not. We’ll just see two lines on the other side of the double slit. Why don’t we see
this behavior with tennis balls? The reason is that large objects are nearly
impossible to isolate informationally from the outside world. What do I mean by
this? Let’s look and see what it would take to isolate a tennis ball. Remember,
to do this, we have to make sure that there is no record made anywhere in the
universe of which path the tennis ball follows. First we have to remove all the
air and photons in the experiment. Why? If a photon or air molecule bounces off the
tennis ball, then it has potentially recorded the path of the tennis ball. For
example, if the photon reflects off 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 photons in the room, find out how
they were affected by the path of the tennis ball, and find out from that
information, the path that the tennis ball took. And the same thing applies for
atoms. We’ll also need to cool this tennis ball to near absolute zero,
because a ball that has any temperature will emit photons due to something
called “blackbody radiation.” This is a property of all bodies with
the temperature above absolute zero, which is by the way negative 273 degrees
Celsius. The emitted photons will have recorded the information about
the tennis ball, such that someone examining the photons in the room, could
determine the path of this tennis ball. We even have to worry about the small
amount of gravitation that the tennis ball will have. Why?…because this
gravitation of the tennis ball will affect nearby atoms. This, in principle,
can allow someone to determine the path that this tennis ball took. The movements
of nearby atoms can also form a record of the path of that tennis ball. 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, will not be a
cloud. It’ll be a distinct entity. 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. But one principle of quantum mechanics is
that it applies to all objects, regardless of size. Could the tennis ball
behave like an atom if we could isolate it informationally? This may be true, but
there’s a measurement problem. We can look at this mathematically. The wave of
an object is described by the de Broglie wave function. Lambda equals Planck’s
constant over mass times velocity. Since the Planck constant is so tiny, and the
mass “m” so huge, the wavelength will be extremely small. So the interference
pattern, for all intents and purposes, will approximate no interference. The
quantum mechanical behavior of the tennis ball converges to classical
behavior. Its interference is so small that it probably cannot even be measured.
So the tennis balls and other large objects, like our bodies, are going to be
about as real and here as you’re going to get. This is the reason you and I, and
the cat and Schrodinger’s experiment are not in superposition. The cat is not dead
and alive at the same time. That’s a myth. And there’s no possibility of
interference patterns being formed in our normal everyday interactions. And for the same reasons, macroscopic objects like this, cannot be entangled in the way
photons can be entangled, for example. So what we see macroscopically is a very
different world than what we see microscopically. and this is why it’s a
mistake to extrapolate our observations and equations in quantum mechanics to
our everyday experiences. They behave in completely different ways. They are two
different worlds. Qantum mechanics is what happens when no one is looking. This
is what makes it so mysterious. It’s as if it only happens when you’re not
allowed to look and find out how it happened. Another way to look at this is
that macro objects like tennis balls and humans are very intimately connected to
the universe. Our every move and path, and even thought, is recorded in the
particles around us, and within us. In this way, our whereabouts and even
thoughts, become part of the fabric of the universe. There’s no escaping our
intimacy with the forces and particles that we are made up of and surrounded by.
And in this way, we are, at least informationally, indeed one with the
universe! You can enjoy lectures from some of the
best professors and educators in the world.
I just finished several lectures by professor Benjamin Schumacher on some of the crazy implications of quantum mechanics. One of his lectures in fact
was an inspiration for this video. If you’re intrigued by quantum physics, and
want to get more in depth, you’re gonna love Dr. Schumacher, and his teaching
style. Some of the topics in this course are like “Quantum Computing,” “Quantum
Cloning,” and “Entanglement.” I just love great courses plus and I’m
not just saying that because they’re sponsoring me. I would have a
subscription to great courses plus regardless. And they’re offering an
incredible deal right now to Arvin Ash viewers. If you use the link in the
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Reader Comments

  1. My physics teacher explained me this with mass, massive objects can't have interference pattern. But now I know another explanation. ❤️

  2. 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?

  3. 1:16
    It really depends on how you define "quantum behaviour".

    In some sense, it never really stops "being quantum", if you actually tried to use an insanely powerful super computer to compute the behaviour of everyday objects in everyday environments using only the rules of quantum mechanics, you will probably just see an emergent classical like behaviour.

    My point is that classical physics is just an emergent phenomena of quantum mechanics.

  4. Hm, I knew the physical size of wave function's "total most probable" area of macro objects is extremely tiny, but I never thought about "information isolation" part. Of course, it's totally correct: any contact AKA "measurement" collapses the wave function. But to think of it, we can't make these "informationally isolated" because macro objects are defined by mutual interaction of their particles: they are more bound together than they are bound with outside world (otherise it's not a single macro object but a collection of objects). And any interaction will collapse the wavefunction of particles or atoms interacted upon (thus, any chemical bond or gravitational interaction will fix the positions of several atoms). The only place where non-fixed particles can be found is deep inside atoms where they are not directly acted upon.

  5. When the tennis ball interacts with the atoms of air, the atoms of air themselves are quantum objects. When two quantum objects interact, you get a third quantum object in which both are objects are entangled. But the third quantum object is still in superposition and does not collapse. So when the tennis balls interacts with atoms of air, the result should be a huge network of quantum entanglements still in superposition not collapsed. You can't escape consciousness so easily… heheh.

  6. A thought-provoking show Arvin..IF we are all all part of an informational record, resolving right down to our thoughts, THEN wouldn't we and EVEN our egos in SOME sense, be virtually immortal?

  7. 8:30
    Wait a minute… Even a single electron effect anything causaly connectable to it with its gravity, therefore, since electrons do form an interference pattern, gravity can't be a way to gain additional information.
    That lives us with only one way gravity can well… exist.
    That way is by treating the probability distribution given by the wave function as a mass distribution, and calculate gravity according to it.
    This way you cant gain additional information about the electron using gravity.

  8. Of course this explanation is limited to the popular or common level of understanding quantum mechanics. Let's play further: On your eraser scheme ( 0:47 sec. ) we see the particles that have got in contact with the Detector 1 representing the outside world. Are you sure the position on Detector 1 of the particle was irrevocably recorded by the Detector 1 ? So has the particle ( one of the entangled photons ) crossed the barrier of the real world and got recorded in it on Detector 1 irrevocably in the moment of detection ?
    All the best, Piotr , Poland.

  9. As you've mentioned gravity of the ball could "leak" some info. on nearby atoms so how is that we get interference pattern in lab even though everything is under the gravity of the Earth. And what about the air molecules in the earliest design of this experiment; won't they give away the positions of photons?

  10. Very nicely explained. Now the question remains, how does one informationally isolate a molecule or an atom so that it exhibits quantum behavior, given the fact that they too are still large compared to the wavelength of photons and the fact that reducing the temperature to absolute zero is impossible, as thermal motion in a molecule never ceases completely. I look forward to an answer (or link). Thanks.

  11. By going back in time path of photons/atoms can also be measured .
    I personally think quantum mechanics exists because of humans inability to measure precisely(absolute).

  12. Happily you can all stop at 1:26 when Arvin asks “why don’t we see this (QE nonsense) at the macro level ? “ . I’ll answer that, BECAUSE ITS ALL BULLSHIT THATS WHY,!!! Okay, go on with your day.

  13. So, measurements in quantum mechanics is like wikileaks of nature. Once information is leaked, a path is chosen.

  14. First let me apologize. I am no academic and my self proclamation of being an intellectual is in question every time I view on of your amazing videos. Ok. My question is, and forgive me if you answered it already, but what is your theory on why "recording" eliminates an object's ability to be measured accurately. That almost seems supernatural. I am going to watch the video again and see if I missed something. I also THINK that I understand in a most simplistic way that the quantum world is far different from our macro world. But that doesn't appear to give credence to a particle "knowingly" covering its tracks. And if it does, it almost opens the debate up to intelligent design. Does it not? I am far from a religious person. As a matter of fact I bounce between a complete atheist view with one that simply doesn't understand well enough to decide. But I was raised a catholic and therefore God constantly seeps into my every thought on the universe and its deepest mysteries. This probably comes across as blatantly ignorant to you but is there any way that you would consider discussing this in a future video or simply tell me to stop watching as I obviously do not understand your best attempts at the simplification of the most complex scientific matters. Thank you.

  15. To make sense of the quantum world ? You ll need a long duration soap bubble filled with helium!! The scaling should be such that you can play with it and understand ! The key word is overdosing ! Anything happening at any level is over dosing quantum world

  16. So.where is all this information stored and can it be accessed?
    Some people on the planet rightly or wrongly believe that all past present and future knowledge and thoughts can be accessed.
    These people have even named this library.
    It's called the Akashic records .

  17. Balls CAN be in a superposition. Kick them hard enough and they'll be both in pain and in peril, not to forget both in hell and reality at the same time ;-P

  18. i think that proves that the universe is a computer program with optimizations like when a particle is isolated from its environment the program takes simpler calculations and operates with only probabilities (no wave func collapsing)

  19. How does the tennis ball go through the slits when it is aimed in the middle. It should hit the middle and bounce off? What makes the tennis balls change their direction and go through the slits?

  20. Worked on the experiment where beta carotinen was shown to follow qm rules while doing the final undergrad practical course. Absolute honor to have seen what colleges managed there!

  21. I feel like you're saying it backwards. There is no secrecy. It's a Law that states all things have the right to be seen as individuated. At any point of observation, albeit an individual thing like a particle or a complexity of many things, creation can, ought to be, and is seen as unique. Look at me now. The main reasons creation exists is to be looked at or as science says… observed and usefulness. This is the Law of Originality and the Law of Similarity. The outward and inward forces that separates all things that don't want to be in an expansive satchel we call the universe.

  22. But when we shoot one atom or photon at the time still not isolated as it will interact with air atoms or room light photons and will show a wave pattern on the screen

  23. So i might be a little behind the curve here. Unless the double slit experiment was done in a vacuum, there must be countless things the wave function would interact with to collapse prior to encountering the detector?

  24. Your videos are great. Glad you take the time to sidestep jargon and assumptions, to avoid people coming away with egregious misconceptions about physics.

  25. I believe there is a mistake at 5:00 in the video. The context is the double-slit experiment and variations on it.

    As we all know, if we don't look and see which slit the single photon goes through, then an interference pattern appears. But if we do have some way of knowing which slit the photon goes through then the interference pattern disappears.

    Arvin claims it's the act of measuring the photon that causes the collapse of the wave function, aka in this context the disappearance of the interference pattern.

    So far okay, but Arvin then claims that if we erase our knowledge of what the measurement revealed the interference pattern is still gone.

    But it's my understanding that there have been experiments of exactly this nature and that the counter-intuitive result is that if we erase the result of the measurement, then the interference pattern reappears!

    Now please understand that the interference pattern is only seen if the measurement result has really been erased. If there is any way that the "erased" information is recoverable, then that interference pattern will not reappear.

    (And by the way I don't mean the experimenter sees the interference pattern disappear and then reappear when they erase the information. That wouldn't work because the experimenter has a memory the of the result of the measurement and thus the information was not actually erased. Instead what happens is if the information is erased, then it is as if the measurement was never made. The experimenter has no memory, and no possibility of memory, of the interference pattern not being there.)

    Now if I've misunderstood and got it wrong, please speak up and say so.

    Now what Arvin literally said, at one point, was: "..the interference can only occur if it is impossible even in principle to find out which path the particle took…"

    That is my understanding also.

    But I don't think this includes the "in principle" of going back in time. I don't believe we are allowed to imagine that we could go back in time and thus in principle collapse the wave function. If that were true, then no such interference pattern would ever appear because we could always imagine going back in time and seeing what happened.

    Or another way to look at it is that quantum mechanics implies that, by the way, it is impossible to go back in time.

  26. I'm at 8:35 in the video and I really do like this explanation. But something is bothering me.

    So the idea is we can set up a context where a single electron can travel through a double-slit without interacting with another particle, and thus the wave function is not collapsed, because we have no way, even "in principle," to detect which slit the electron went through.

    Whereas on the other hand, a tennis ball is almost constantly directly interacting with other particles, and thus even if we are not looking for the information, still if we actually looked we could always find information on where the tennis ball was. And thus no interference pattern is seen.

    This an intriguing idea.

    But at 8:35 we are also shown and told that the gravitational force that the tennis ball exerts on the particles around it is also an example of an interaction which would collapse the wave function. I don't understand that because the electron also has mass and it is also interacting through the gravitational force with the universe around it. Why doesn't that collapse the wave function?

    And by the way, the same objection actually applies to the first idea — the one that I kind of liked. We have an electromagnetic field. We have a strong field. We have a weak field. And we have a gravitational field. In the case of the electron, only three of those fields are felt. But all three, in principle, give information on where the electron was.

    So if the reasoning in the video is the correct, how is it possible for an electron to ever make an interference pattern while going through a double-slit?

  27. I'm at 9:59 and this seems like the right explanation to me. Unlike with an electron or a proton or even a hundred atoms in cluster, a tennis ball is so large, and its wavelength correspondingly small, that we have no practical way to detect an interference pattern that some would claim should be there, if the tennis ball's path is not observed.

    So Arvin Ash gave two independent explanations of why a tennis ball shows no interference pattern in the double-slit context.

    The second explanation I totally accept, and that second explanation makes it very difficult and maybe impossible to test the first explanation.

    Even if Arvin Ash is completely wrong in his first explanation or hypothesis, the very small wavelength of the tennis ball ensures that we cannot observe an interference pattern.

  28. So I've reached the end of the video and I have a completely different explanation of why the macroscopic world seems to behave so differently from the microscopic. It is simply that the wavelength of macroscopic objects is so small that we have no practical way to observe the quantum mechanical effects that we can perceive in the microscopic world.

    Or in other words the macroscopic world could be following exactly the same rules as the microscopic, and yet it would still appear exactly as we see it.

    Or so it would seem. The question is: Is there an experiment that can be imagined that would distinguish between these two hypotheses?

  29. You said that one of the ways the tennis ball could theoretically be tracked is by its gravitational affects. But surely, this would apply to subatomic particles as well. For example, you could (theoretically of course) put a long double slit experiment next to a small but massive object like a black hole. As the particles exit the double slit, the one closer to the black hole would deviate more and thence reveal which slit it went through. Given that gravity affects everything travelling in curved spacetime, this would seem to imply that nothing should be able to travel incognito as a wave but as we know, sub-atomic particles do. Can someone explain this contradiction to me.

  30. This video triggered me, we have better interpretations than these now. Thanks.
    When particles interact, their waves localize when there is a higher potential energy dwell due to the interaction, but when they are not interacting or weakly interacting, their energies are more disperse in space, actually going thru both slits. This is not an information problem but more of something of the nature of waves. We now understand the universe as composed by fields interacting with each other where things behave only as waves.
    Those guys were close but their interpretation has been misunderstood big time. Thanks no thanks (physics student here). Even my professors make this mistake because they really don't care to check newer more simple interpretations that are more meaningful so I am not going to hate on you guy.

  31. So just to be clearer, its not an observation by humans or even a measurement by humans, its an interaction with another particle in the universe that causes the collapse. So its not observation, its interaction. If that’s true, then if you could eliminate every interaction with the tennis ball, it would act quantum if the tennis ball is nearly massless. So is it that the larger atoms or even molecules simply don’t interact with particles since they have some mass?

  32. Doesn't this effectively prove the universe is a quantum computer conserving resources by using super positional probability in place of rendering data in 3d space?

  33. Interesting. Don't big molecules interact with other molecules which could record their position, just like with the ball?

  34. Question about warp driving: If we set electrons of atoms to closer ring to a proton wouldn't we get negative energy?

  35. Closest thing yet to proving the existence of God. The "universe" can't "record" events. Only "someone" can.
    Sure there are things in the universe capable of making records of what happened, but it's limited to certain places and it won't have all the information of the event. The entire universe recording the entire event in every exact detail is impossible. You could say that all the interactions the event had is the record, but that's just causality, and it's not a record. How is it deciding that something has been recorded? Where's the record, how's it recorded? Only a conscious God can record events in universe. Only an omnipotent consciousness can remember the past present and future.

  36. Good morning Arvin.
    I am looking forward to seeing your videos in the new year.
    Great video.
    I really enjoyed watching.
    I am always a smarter after seeing your videos.

  37. That double slit explanation is rubish. Accept that there are things beyond our limited brains and that we have no idea what the hell is going on.

  38. 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.

  39. Another class by Arvin . Thank you Arvin . If suppose the double slit experiment is not done in a vaccum does then a photon again loose interference pattern as it will interfere with atoms in atmosphere.

  40. Thank you so much for The best explaination ever !…
    But i have a question : why molecules or atoms can be used for the experimant successivly although they are exposed to light and air molecules as same as tennis balls

  41. What about the gun used to shoot the electrons or atoms, could they not record ? I want to know why the small particles like photons present in the air not recorded ? Now funny questions … What about looking from far using powerful 🔭 ? 😂😂😂👌👌👌

  42. What if particles are living in a 5 dimensional reality apearing to be waves here until they interact with a 3rd or 4th dimensional particle, so they are forced to stay as a particle?

  43. Using the same electrons and the outcome depends on whether we observed or not? What's going on really.!! What if camera is used one OFF another ON.

  44. Would a macro object that falls behind an event horizon become informationaly isolated from the universe and so behave like a quantum probability wave?

  45. Indian education system is so f*cked up.
    I was taught about this expp in college.
    Sorry, I was made to memorize definition and formulae* 😔, and I understood nothing.

  46. 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.

  47. Very nice video, but as we are not able to create a perfect vacuum, we are still able to obtain some information about the electrons trajectory right? Wouldnt this mean we are never able to view the particles to distribute across the screen like waves? Or is there also a cutoff point for this?

  48. The problem with this explanation is it implies that pathways are simply unknown but yet are still discrete.. But quantum particles do not follow discrete paths. The photon, or electron or other true "quantum particle" takes ALl paths. It goes through both slits what not measured. That's the weird part. No scientist understands what's going on. There is still no accepted and verified quantum interpretation of the double slit experiment.

  49. I find it more understandable to say 100% uncertainty, rather than 100% secrecy, and zero interaction rather than being recorded (then it's easier to see how a small object has little problem avoiding interaction – seeing as most of everything is empty space at that scale). If you perform the double slit experiment in an atmosphere that is slightly hazy then you'll be getting some interaction between photons and the haze – does this make the two lines you'd usually get, brighter relative to the interference pattern? Could this be used as the basis for a very sensitive density meter? (for gasses and transparent liquids or solids). Even air pressure change should have some (minute?) effect.

  50. OK. If a conscious observer is not required then was Einstein correct in questioning the implications of the Copenhagen explanation of the quantum world. Surely the very act of checking the results of a double slit experiment even at a much later time involves a conscious observer. Observing the result of an entangled particle experiment suggests that something crosses spacetime in an instant, or an influence of some sort is already waiting for particle B at a point in space the moment that particle A is measured/observed/interacted with. To say that the cat in Schrodinger's thought experiment was never in some kind of quantum holding pattern just because it is macroscopic is guesswork as you still don't know for sure until you look into the box. If our thoughts are 'out there' then surely the act of interaction/observation is going at every place and time – in which case why do we ever see evidence of wave patterns in the double slit experiment at all? I'm getting myself mixed up here – have I just disproved God or something? – Sorry everyone, just ignore me and I'll go away – or cease to exist….

  51. about isolating stuff, why is it possible to isolate atoms and molecules? don't they still affect other things with gravity? even if its such a small force, there is still a force, and it could technically be measured, right?

  52. Wow! I've read so many explanations, but none that delve into this topic in so much detail. Keep up the good content!

  53. Great video, but there is one question I was left with.

    If all objects above 0K (which is only a theoretical temperature) emit blackbody radiation and react with different fields, how can molecules exhibit wave behavior in the first place?

  54. I am rather poorly educated and I do not understand so much of quantum physics, but a thought I had was about the material used to create the slits and if it can be so that it is the material rather than the hole that create the wave pattern, would we see any difference if the walls around the slit was made of a material that absorb light compared to materials like gold or glass that bend the path of the light. What would happen if the slits where at a small angle or even wear at slightly different distances from the source?

  55. Informationaly Isolated = Design = Intelligence. Either the Universe was created by a conscious Entity or the Universe has self consciousness/awareness. Call it a simulation or not, there is still design involved. And design =…

  56. If a tree falls in the woods, and science isn't around to question it's motives and behavior, does Quantum mechanics still make your brain hurt…? 🤷

  57. 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?

  58. the quantum world is a different dimension. that’s why it changes when we observe it bc we can only perceive the 2nd, and shapes vary at different dimensions. a theory i’ve had in the back of my head for a while

  59. Can we describe "Information" in some form of matter? If not then how can this non materialistic thing can effect some matter(atom,molecule) to behave differently which dont have its own consciousness. Note: I m not a pro but i m just curious about things.

  60. Another great explanation. I'm just wondering why gravity from other atoms doesn't have an effect on a 2000 atom molecule?

  61. Nice but the "one with the universe part" was an unneccesary part. Squinting your eyes very hard to try and see things that way.

  62. Dumb question, is it possible to make a laser not experience diffraction if you simply measure the photons at the source before it behaves like wave, to make it collapse into particle behavior?

  63. The Christian God Jesus is Satan the devil and he is not coming back… Christians worship Satan with a human sacrifice of Jesus to Satan… you've been deceived… repent accept Jahovah and do good works.

  64. If we assume the force of gravity extends over infinite distance, how can anything be in a superposition if it is interacting gravitationally with everything around it? Getting rid of photons due to black body radiation sounds hard enough, but how do you remove the influence of gravity in an experiment?

    Because I had this thought experiment that if we had detectors to detect the gravitational influence of particles, we could put this detector on side the side of the double slit and measure the gravitational force acting on the detector, if the force acting was weaker, then it would come from the slit that was further away and if the force was stronger you could deduce that it must have gone through the slit that was closer to the detector, thus knowing which way the particles went (even though the force measured would be incredibly small, if it in theory exists, then you could deduce the which way experiment). Yet according to this video that would prove to be a feeble attempt as that would collapse the wave, but that begs the question, why doesnt practically everything collapse the wave function: cosmic rays, gravity from surrounding objects, black body radiation (no matter how small) and so on. It seems like a miracle its possible in the first place

  65. So if anything (a force of any kind) forces the object to recalculate it's changes, it will reset its calculation and make a conclusion. If the chances are 100 % it will lose its quantum behavior.

  66. Why does a baseball not behaving like an electron? Because you created a baseball and thought it into existence. You observe the tennis ball. Thus you collapsed its probability wave so it chooses to be a particle rather than a wave.

  67. What I get from this video is that its all predetermined i.e. it was recorded within the "information" of the universe just after the big bang happened that I will write this comment on a laptop made in China and someone in France called Julie will like my comment.
    Another way to look at it is that the past, present and future all happen at the same time.

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