To everyone asking about the quantum eraser experiment, I promise Myth #3 is still a myth. *A conscious mind is still not required.* The more complicated the experiment, the harder it is to see this though. The quantum eraser experiment is made more complicated by using entangled particles. Even in the PBS Space Time video about it, he clarifies this at 1 min 51 sec: ua-cam.com/video/8ORLN_KwAgs/v-deo.htmlm51s
So an observation in the language of physics means something quite different than the word observation does in ordinary English. I'm guessing an observation on the atomic level is any interaction between particles, or maybe just certain kinds interactions. Or maybe I'm just misunderstanding entirely.
Does that mean if there was some way to observe without any interaction, we would not see the effects (i.e., it is the interaction that causes the effects, not the observation)?
Considering my viewing habits and how many science channels I've been subscribed to for so long, it is absolutely dumbfounding how UA-cam only just recently recommended this channel to me and you've been doing this for years. This channel is gold. Thanks.
I had the same recommendation problem, and now I’m having the problem of keeping this channel in my feed & notifications. It feels like the algorithm only wants to push the easy to admin and create: “generic science news, narrated by Google’s bot voice” content.
a long time ago someone once was confused about schrodinger's cat and said how can a cat be in a superposition of alive and dead. i said it can't, a cat is an observer. at least it made them think about it ... (although it's the radiation detector that is probably the actual observer).
@@MusicalRaichu Yes, it raises all sorts of questions. None of them comfortable. The people commenting here that this video comes as a big relief to them really need to find out more about quantum mechanics and the experimentation behind it.
People who already watch PBS Spacetime and Kurzgezagt and Isaac Arthur might see this channel and assume that it's entry level stuff and that they won't learn anything new from it, but this channel is truly awesome. Yes, this video is specifically about myths and dispelling them, but to a large extent, every video on this channel has a mythbusting element to it. I learn so much from this channel. The format is so concise, he fits a lot of information into short videos and with the clones serving as interlocutors, the information is made very digestible. Many other youtube videos would take a lot longer to deliver the same information content and it wouldn't be divided into bite-sized chunks. This is really great. Thanks for doing what you do Nick.
Yeah, there's something about his style that makes these videos look old. The first few videos I saw gave me an impression that these videos are from 2012 circa and he no longer makes videos, I don't why.
You really shouldn't mix PBS Spacetime and The Science Asylum with Kurzgezagt an Isaac Arthur. The former are much more rigorous and accurate, and the last one is just Elmer Fudd daydreaming about space.
I find all those channels too much of fantasies or jargons. Just watch a video on twin paradox on this channel and other. Other channels would fuck your brain. I feel they just want to talk more about parallel universe and alternate reality than this universe
It’s wonderful to know that I wasn’t crazy for coming to the same conclusion about these myths as shown in this video. However, it’s awful to realize that I received a Bachelor in Physics learning these myths with no explanation. Thank you for making this video!
I believe it is true that Nick and this channel are severely underrated... This video is a must-watch for those who seek clarity about quantum mechanics! I can't believe I watched this 5 years late... the clarity with which the myths are dispelled are so impressive, and not easy to find elsewhere!
Please do more of these! Clearing up the misconceptions is definitely your greatest contribution to public science education. You clear up in ten minutes what took me years of reading and research to get wrong! Thanks!
Its not that a wave is a particle or a particle is a wave, you can not have something be two things at once that contradicts the laws of mathematical function. So if you assume a duality idea then your idea is not a function and thus nondeferentiable and noncontinous therefore calculus falls apart. Thats why we have to see it as a particle or a wave so that calculus can be useful but not at the same time.
THANK YOU!!! This is one of the most frustrating concepts I still hear being taught today. I wish more ppl would just understand this. It’s all waves. “Particles” are just measurements of waves at certain positions we choose to measure. That’s literally the definition of quanta.
@@monad_tcp Quantizing in music means programmatically fitting the sample to the beat. In quantum physics a quanta is just an amount that is measured. So a particle, which is a quanta, is just the energy of a wave measured at a specific point.
@@monad_tcp Sound doesn't travel in space. That is interesting. The energy of it does seem to travel in space but cannot translate into sound output before there is f ex oxygen in the room or atmosphere or any volumous locality. I have seen the theory of phonons. First I thought it was comical but I am much less skeptical to it now. But then you have some different descriptions of what phonons can be. Note that there are different main categories for the various types of waves. Not to be forgotten.
@@KibyNykraft Phonons definitely are a thing, as waves carry energy. But sound is usually mediated by a medium. What's the medium that mediate photons ? The Higgs field ? that mediates all particles in the standard model, doesn't it? The parallels between quantum physics and audio are amazing.
I always thought that double slit experiment seemed sketch the way people were interpreting it. It also never made sense to me how observing an event could change the outcome, but knowing it's a particle interacting makes alot more sense
just saying, the word "magic" must be defined if we are going to communicate this. quantum mechanics explains a lot of what people call "magic." but magic can also infer pure BS. it just needs to be defined. such as harry potter vs experiments proving things like levitation, but on the MICROSCOPIC level.
Love the Weezy Waiter love! Also, as a physics student at Cambridge, I really want to say your videos are amazing man. I'm so impressed at how well you are able to present this stuff for such a young target audience. You do so with more clarity than most people can explain it to older people. Even though I've studied most of this stuff already, every now and again I see something more clearly than I did before.
Thank you Nick for clearing up those myths. Most channels that make videos on the double slit experiment or talk about Quantum Mechanics really push the "mystic" aspects or explain it wrong. You do a great job of explaining the actual true facts about science.
yeah this is one of the most comprehensive video's i have ever seen on the double slit experiment. no one ever really focuses on what happens when the particle has an interaction before going trough the slit. and most importantly i barely ever seen anyone remove the "role" of the observer that has made so much science woo you sir deserve a hundred fold in subscribers and this can easily be used for high school.
For instance he says that observation adds Photons thus interfering with the experiment. He can't know that because it's never been demonstrated. He can not think of a way in which we can get these results, so he assumes that we just haven't detected interference yet.
Feynstein 100 Yeah, I only recently discovered this channel and I love it. Given all the science channels I'm subscribed to, I can't believe YT didn't recommend this sooner. What a hidden gem ^_^
For future readers confused by this comment: in the United States, The People, via their government(s), used to provide education as a public service so that citizens would be qualified to participate in a democracy. There was a "Department of Education" tasked with seeing this policy through, not unlike the "Department of War For Profit, Bitches" and the "Department of Fuck Poor People" that you're probably familiar with.
Anime Aboutalib Do you have any content to add, or does it simply make you feel better to dismissively label uncomfortable ideas so you don't have to think more about them?
Amine Aboutalib It's not clear that you were saying anything at all about my statement. To what "passive agressive approch" were you referring? Can you elaborate a little?
That episode fried my mind. It took the exact opposite of what I was expecting with such a title, and made quantum physics even more interesting alltogether. Thank you !
Sorry to be that guy, but this video is missing the corollary to Myth #1: particles never _truly_ behave like objects, but also never truly behave like waves! The wavelike behavior of quantum particles is never quite the same as that of ordinary classical waves, and this is clearest for experiments with single particles. I share some of the frustration with the concept of wave particle duality because it often hinders more than helps (and resulting confusions sometimes find their way even into high profile journals), but there's a core of truth to it, which should be understood in terms of the complementarity principle. Quantum particles share properties with both ordinary classical particles and ordinary classical waves, but such properties are never manifest in the same experiment. That's the core. With regards to the second myth, I have a somewhat more serious contention. The language you used was necessarily vague, so I'm not super sure what you meant, but it should be emphasized that the idea of collapse has no neat dynamical solution as the picture of a photon "changing the wavefunction" of an electron implies. The state of the electron after the interaction is still a superposition of position states, and thus delocalized, but now it is entangled with the photon, so that more properly we should only speak of the electron+photon combined state. Once the state of the _photon_ is measured, hopefully by the physicist who set up the experiment, then we finally have a collapse. It happens when the observer learns something new about the system and updates the quantum state, his book-keeping device. This is ok and doesn't imply in magical "mind over matter" quantum magic because the quantum state is not a physical object per se. It's a calculational tool that codifies the experimenter's knowledge of the system. Because it is a quantum system, it behaves in classically strange ways, but the state really is just a thinking tool. What can be surprising is that this is true modulo some trivial corrections even if you "interpret" quantum mechanics in some nonstandard way!
Is this something like: The totality of existence cannot be computed? LaPlace's Demon still couldn't predict the future due to uncertainty principle, right?
Nah he couldn't predict the future because of hidden variables like the total amount of objects in the solar system, total number of stars in the galaxy, etc. The uncertainty principle is one of the many variables that has to be accounted for when predicted the future to an exact. If you want to predict the future of everything to be exact (which is impossible due to the amount of variables that are needed that we can't possibly get) you would have to know exactly how many particles are, where they are, and all of the energy content of each particle (by energy content I mean literally all the internal kinetic energy, the kinetic energy of the combined particles of larger objects and all of the potential energy). Which this somewhat has to do with the uncertainty principal but that would only matter once we have found every particle
Does it mean that when the photon hit the electron, the electron doesn't become more localized than before the interaction? Is it only localized after the photon be measured?
@@aalmadoestado1169 According to this science asylum video, the higher the frequency of the photon, the sharper is the wave of the electron. The animation seems to say that the peak intensity increase and bandwidth (spread of frequency) decrease with high energy photon. The uncertainty principle should not be extended to vast macroscopic dynamic like stars and planet. All it says is exactly what electrical engineers know about high frequency waves: if your wave is slow, you can't measure with high precision. Visible light is about 500 tera hertz. Compared to the computer clock of 5 ghz, you need to multiply by 100 to get 500 ghz, then multiply by 1000 to reach the frequency of green light. Blue ray disk can store more than the original cd format that used infrared because blue light can be concentrated to a smaller spot. Uv would be better and x ray disk even more. Higher frequency give better precision but timing, phase, becomes less precise. That is the electrical engineer way to intuitively clarify the obscur concept of uncertainty.
Sir, I am so glade I found your channel. I very much appreciate your clear and direct interpretations. It has helped me clear up a lot of the misconceptions I have picked up elsewhere on other science UA-cam channels. Keep up the good work!
@@ScienceAsylum Oh wow, thanks for replying! If you don't mind I'd love if you could answer a question for me? I watched Eric Weinstein's podcast with Joe Rogan and came upon this tidbit: ua-cam.com/video/X9JLij1obHY/v-deo.html It goes on until 50:22, in it Eric Weinstein states that there are "good" and "bad" (I know, vague) questions to ask about Quantum Physics. If you ask a *good* question, you get a deterministic answer. If you ask a *bad* question, you get a probabilistic answer. I wanted to know if what he says is accurate? From your explanation on how mirrors work it seems like his assertion is inaccurate.
1) From what I understand, Eric Weinstein isn't the most reputable physicist. I don't know many details, but he has a bad reputation. 2) I wouldn't really agree with what he said about quantum physics. _All_ answers to quantum mechanical questions are probabilistic answers. It's just that some probabilities are narrow enough to _appear_ deterministic. 3) There are no bad questions. All questions are good. It's the intention and expectations behind the question that could possibly be bad.
@@ScienceAsylum Thank you so much for this explanation! This really does clear things up for me, since after watching his appearance on JR's podcast the videos I watched and material I read seemed to contradict what he was saying and caused much confusion.
I must jump to the conclusion... that you're right and you clarify a lot of things in a very straightforward way. I knew all this (not without some difficulty learning about them) but a lot of people don't and even Sean Caroll was manipulated recently into conceding to the "observer effect" in ways that leave too much room for wild speculation, so this kind of clarification is very much needed, thank you.
You have never disappointed me, every video you upload is entertaining, educational, and easy to understand. I don’t know how you did it but well done!
This has confused me for years, mainly because all the textbooks explained it horribly every single time. And here in 7 minutes you clarified the whole thing
thankyou very much for your reply,,,,,,,,my detector is working fine but my recorder is on the blink I never know if it's working or not sometimes it records and sometimes it don't ,,,would I know if it is working by looking at the results ie a wave would say it was not recorded and my recorder was not working at that time and two lines would tell me it was working .thanks for your reply.
THANK YOU... so many explanations of quantum mechanics fall into the traps you describe here, that a viewer can't help be confused by the outlandish claims, and these myths I think contribute to confusion and misunderstanding, and hurt the credibility of those explanations. You clearly state these misconceptions and it is a relief to find that quantum behavior isn't nearly as off the wall as it so often is made to sound.
I can't know how long you've been around on the science side of youtube but I'd like to make sure you're not missing out on Scishow and the Camebridge University channels like Numberphile
Hey, the one question left hanging for me is this: when you say electrons are waves, does this mean each of them is a "wave", or that groups of them travel in waves? This is always hard for me to grasp, because all other examples of "waves" that I can relate to are waves of some substance, like air or water... the word wave always describes a behavior of those substances, caused by some disturbance of existing matter. So I don't know how to conceptualize a single quantum particle as a "wave"; i don't know what that means; I know their behavior might be described mathematically as a wave, but how to we grasp the idea that an individual piece of matter, a quantum "particle", is by itself a "wave"? Thanks so much for this video, it has made me feel so much less insane when trying to grasp these concepts of quantum physics! It makes the descriptions sound less like the ravings of a lunatic, as they so often sound when they indulge in misstating these myths!
the fact that the collapse of the w.f. still leaves the particule acting as a wave really blow my mind, because I had problems imagining that a particule could interact more than once with other particles if the first interaction would "seal" its fate as an "object". also your explanation of the H. principle as s.d. was also very cool and refreshing. I guess we need to get all this concepts wrong before we finally get it right, I mean, I would not understand your videos if I hadn't seen all the others before, it is kind of a paradox, right? Also, you now got me thinking about the quantum eraser Doble slit experiment. I hope you make a video about that some day.
Yeah, the collapse still leaves it a simple wave spike. That simple wave can slowly drift back to the original too if you leave it alone for awhile, which makes sense if it stays a wave the whole time.
I want to give a hearty hooray! For how you treated the first two myths. I like the treatment of the third as well, but I'm not sure what Consciousness is so it's hard to tell whether it's important or not until there's the definition. A lot of biologists tell me there is no such thing as consciousness. Stuart Hameroff is famous for saying that as a anesthesiologist he must turn off consciousness during an operation and if you can turn it off it must be something. Rodger Penrose thinks consciousness comes from Qquantum Bbehavior. Who knows? But what you're really addressing is the misconceptions about the double slit in such experiments where people assume that by measurement a conscience agent has modified the behavior of the particles and there I wholeheartedly agree with your interpretation.
I had to pause the video at the "watcha gonna do about it punk" part. The combination of that with the electron growing had me laughing hard. I'm learning so much here, thank you.
Agreed. And it is possible the very people who make that argument would scoff at those, then and now, who think we humans are the center of the universe.
But this doesn't explain the Delayed Choice Quantum Eraser Experiment where by photons were fired though the double slits and and all of them were measured however half of them were scrambled and the other half weren't; but only the ones that were scrambled still made the interference pattern while the ones that weren't didn't. Can you please answer this question for me; because this has be vexing me sense i stated looking in to quantum mechanics. the fact that observing something is interacting with it do to photos having to bonce off the electrons makes sense, but when you add the quantum eraser experiment to the mix it just doesn't make sense to me. Have I been lied to? PLEASE HELP!
Jacque Coleman Excuse my ignorance, but this is the first time I hear of this experiment and I would appreciate yours elaborating on how it factually dismisses or contradicts Nick's statements.
Kostas T. It's the double slit experiment however using photons instead of electrons. when they fired the photons through the slit it would pass though a crystal that would split the photon into entangled pairs (one photon goes in two entangled ones come out). As you may know when particles are entangled what happens to one happens to the other (some what). After being entangled one photon would go to the wall and the other one would go to be measured. The experiment was set up so that the the photon that is to be measured would only be observed after its entangled partner hit the wall letting the researchers know which slit the photon went through. However the photons still acted like a particle even though they were only observed and measured after the entangled partner hit the wall. They tried this experiment again however this time they scrambled half of the information so they wouldn't know what half of the photons were doing. the results showed that only the photons that were scrambled acted as a wave and showed and interference pattern while the ones that weren't didn't. all photons were measured and went through the same process but only the ones that were intentionally scrambled acted as waves while the ones that we still had information on didn't. I don't know if i explained this well enough so here's a link for you ua-cam.com/video/8ORLN_KwAgs/v-deo.html and the crystal they used us called an beta barium borate crystal more here:ua-cam.com/video/2Ut0F4a9dQk/v-deo.html I know these aren't exactly scholarly sources but this is how I've been learning about this stuff for the past month and its not to different from the science asylum so eh.
I think perhaps you didn’t get the idea. There are no photons, there are only events and the noisy fields that cause them. How do you know there is just one photon going from one place to another when all you actually saw was a single event? But still, we would like an explanation, so we think to ourselves this is quantum FIELD theory, not quantum particle theory; with that in hand, we can think about how a field could cause events. BUT it can’t be a simple classical field, there has to be noise so that the avalanche events that happen in Avalanche PhotoDiodes happen randomly, according to some statistics, not one precisely every second. Think about it, and perhaps also see my channel, where my first video tells an approximately similar story. Not exactly, but similar. My video production is not remotely close to as funny or good as you’ve seen here, of course. There are gaps in the story, but I personally find it cleaner to invoke fields than to invoke photons, particles, objects as causes.
I love your videos on quantum stuff. I do also feel sorry that you have to do so many of them for us. It can't be easy taking some of the toughest science around and making it into cute bite sized videos (you do it well though). I'd love to see some videos on the stuff that gets you really excited. The passion projects, the personal favorites.
Thanks man, I was trying to make exactly this point on reddit, now I will just link to your video You just saved me a weeks' worth of research and video editing.
If they are always waves then why does the interference pattern disappear when the observation equipment is in place at screen 1 and someone is measuring the system?
I first learnt about quantum mechanics in the mid sixtees. It fascinated me and sent my mind into a crazy spin.. I must say that it is still spinning in confusion and fascination. I enjoyed ur vidio.... Because I was holding the same myths.
The particle (or any object for that matter) is "actually" never a wave or a particle. The existence of the universe is all simply a constant transferring of information. We live in an information system -- like a virtual reality. So called "Quantum Magic" is physically impossible in a truly physical Universe. Therefore, the Universe isn't physical in nature.
Yes, I saw a video about this (I think it was on PBS spacetime). And even tho the electrons were measured at the slits, they would still behave as waves if the data of the measurement was deleted.
Yep, what about quantum eraser? I find the QE fascinating also for what it says about faster than light interaction between entangled particles and its consequences in respect to time.
It only shows spooky action at a distance, no observer was involved, unless you consider electronic measuring devices as such (but that's entanglement or measurement or interaction or interference, not consciousness).
Yes but if i recall correctly the strange part about the eraser is that the entangled particle is manipulated anyway but when it passes through the eraser his "sister" behaves like it was not measured.
en.wikipedia.org/wiki/Quantum_eraser_experiment First you polarize it and thus the interference pattern is destroyed, second you polarize both entangled photons and the intereference pattern is restored. How does polarization have anything to do with "consciousness" beats me. The word "eraser" is misleading.
Thanks for another vid Nick! It's nice to get information past the experiments we've already seen, as well as nuggets like "the experimenter was unnecessary" :) (Interesting depth to the initial sound, btw)
This is a great video, one of Nick's many good ones. Idea for video: if electrons are waves, how/why do they have mass? You covered this in "What the HECK is Mass" but very briefly.
Can you make a video on what the "wave" of the particle is? What is wavering? When you have a AM radio wave that is hundreds of feet big, what does that mean? It can't be the photon traveling up and down since that would increase the distance traveled the bigger the wave, and I know that doesn't happen. It's a pattern the photons make? Also... how does light make destructive interference? What happens in the quantum level?
Loved the video! so the reason the electron appear like two strands when you detect them and not as an interference pattern its because they interact with photons and become less wavey?
There seem to be paradoxes like spooky action at a distance and even against the arrow of time, but the "observer effect" is a myth: there's just the "measurement problem".
@@ScienceAsylum your video's really informative and helps to narrow down on the subjects you presented, however I still have a doubt. What exactly are these waves? I've seen your other videos on quantum field theory and more or less understood that we have these theoretical fields of possible values for different types of subatomic particles. Subsequently, the "waves" that excite these fields are what we perceive as particles. From what I've gathered, these energies that elevate these points in the quantum fields above their vacuum state alter the value of the point in the field (thus elevating it above the vacuum state). Still, there is this one question that keeps bugging me. What is the energy that creates these oscillations?
@@Bharathkumar-od9je yes it is. but you need to understand what a quantum particle is. its quantum fuzziness. its localised, but its governed by heisenberg uncertainty so its exact location cannot even be known, only the probabilities of its most likely location calculated. particles are not small round marbles, and im not sure waves is the right word either though its closer i suppose, a particle is like a localised quantum bundle of fuzziness. Another way of describing it is a 3-dimensional probability wave, with lobes and poles and spin and quantum fuzziness all over. particles may be drawn as small round marbles, that's not one they are. they were never that. the guys who derived quantum particles never derived particles to be tiny round marbles. think about this, if its fundamental particle,. So it is in a sense a pointlike particle taking up no physical space at all, having no internal structure.it is zero dimensional. that's i guess looking at it from a classical mechanics perspective. However this is complicated by the Heisenberg uncertainty principle, because even an elementary particle, with no internal structure, occupies a nonzero volume. For example, the atomic orbit of an electron in the hydrogen atom occupies a volume of ~10−30 m3.quantum particles have spin, they have a property of angular momentum, which is like the spin of a planet say. So... it's complicated. It is weird in terms of not being intuitive, but it is calculable, it is predictable. And that's why I find mathematical equations or pictorial depictions of equations e.g. like Feynman diagrams which describe what happens when particles interact, math basically describes reality. Reality is mathematically, it obeys mathematical rules/laws. For some reason.
The problem with science at times is its use of metaphors and words that are used colloquially. This causes people to think one thing when scientists mean something else. Hence why "particle" and "observer" are troublesome. While scientists use "elementary particle" or "point-like particle" to be more clear, journalists tend to conflate scientific terms with colloqiualism, thereby confusing the population. Perhaps "particule" could be used instead, just like animalcule. As for "observer", it is annoying when laypeople understand that to mean "conscious". I like to think of this another way. Suppose you have an audio recorder recording sounds in the woods. Even though you didn't hear these for yourself, the recorder picked up the sound waves, thus, technically "observed" the sound.
+Luis Aldamiz I wouldn't know. I just had animalcule in mind, which is an outdated word. Molecule even has "cule" in it, although I'm entirely uncertain if that is related.
ITS NOT ABOUT WHEN ITS IS OBSERVED. its about if anyone will ever see it. the camera is only waves alone there in the woods (probably not, probably things in nature) it is only when you see the recording that the event is decided. but then it has ofc always been decided, since it was observed. remember that he just said that your photones interact with the event as an observer. im sure you know observers take in photoes, they do not emit them
I'm sometimes a bit annoyed by your character, but waw your content is always so accurate and to the point. I'm amazed every time I watch you. Thank you. I'm subscribing.
It's like Curly of The 3 Stooges is giving a physics class. I keep waiting for him to go, "Nyuk, nyuk, nyuk" or "Woo-woo-woo-woo-woo-woo!" Someday he'll do it. Mark my words.
OK - That helps a great deal. Many of the explanations I have seen present the effect of particle duality as solely dependent of human observation. This helps clear that up.
U hv been commended by many for your unique style of presentation, and many would continue to do so! 🤗. If there is a Nobel prize for "Best explanation to Lunkheads" like me, u would get it hands down.
Thank you so much for this, I've heard so much ridiculous pseudoscience from people who read pop quantum articles and claim that their conciousness actively changes reality.
Brandon Klein Well, people actually change their reality everyday with their consciousness and they don’t need quantum physics to do it... your reality depends on how you perceive it, very simple really.
Anna Yes! Of course people have different perceptions of reality. What science attempts to do is remove that human subjectivity from observation. Also, saying that people "don't need quantum physics to do" anything is a but odd as the theory is a fundamental and inescapable part of reality! One of the best things about science is that its affects are permeating weather or not you're aware of it's inner workings at all times.
Brandon Klein Agreed that science plays a part in everything, that’s not debatable, obviously. I didn’t say people don’t need quantum physics to do anything, I said people don’t need quantum physics to change their reality. That was meant to address those that say they are tired of people who say they can change their reality because of particle duality (meaning the woo-woo people who say quantum physics and metaphysics work together). I am just saying that things like changing one’s perception of their reality is something that anyone can do and it has nothing to do with quantum physics experiments that may or may not suggest that observers are needed for the results to say wave or particle.
It confused me. Another video he said the "wave" was just the probability distribution of where you would find a point object. No physical manifestation of a wave. Unless you put lots of them together then they will distribute in a wave-like way. They even distribute in a wavelike way with one....hence somethig like pilot-wave theory where particles follow some kind of aethereal wave guiding them (not a favoured theory but demonstrates its like a pixel component to a wave, no? But this theory is derided because the consensus is such waves dont exist!). So just....they have uncertain position until observed. A wave of probability but are not ' actually' the wave, just uncertain?
I'll admit, I'm one of those that believed consciousness affects reality only just recently. I don't blame anyone for believing this either beings how weird quantum mechanics is and what the double slit experiment implies at first glance. I do, however, fault those who don't actually try to find the truth and instead spout crazy theories about the "FACT" that consciousness creates reality without providing further evidence. I mean, all the proof cited are from the brilliant minds of 100 years ago which I always found strange. Nothing about recent developments in the field. My rabbit hole journey has led me to quantum field theory and this video. Thank you for furthering our knowledge and hopefully this becomes more known on a public level in the near future.
To everyone asking about the quantum eraser experiment, I promise Myth #3 is still a myth. *A conscious mind is still not required.* The more complicated the experiment, the harder it is to see this though. The quantum eraser experiment is made more complicated by using entangled particles. Even in the PBS Space Time video about it, he clarifies this at 1 min 51 sec: ua-cam.com/video/8ORLN_KwAgs/v-deo.htmlm51s
So an observation in the language of physics means something quite different than the word observation does in ordinary English.
I'm guessing an observation on the atomic level is any interaction between particles, or maybe just certain kinds interactions.
Or maybe I'm just misunderstanding entirely.
help8help, exactly right. It means something different specifically in quantum physics: interactions and only certain kinds.
Does that mean if there was some way to observe without any interaction, we would not see the effects (i.e., it is the interaction that causes the effects, not the observation)?
Keep these videos coming please!!!! How about one on quantum chromodynamics?
Jonathan Hines, there is no way to observe without an interaction. It's not possible.
Considering my viewing habits and how many science channels I've been subscribed to for so long, it is absolutely dumbfounding how UA-cam only just recently recommended this channel to me and you've been doing this for years.
This channel is gold. Thanks.
The YT algorithm kind of hates me. After 5 years, I've gotten used to it.
I had the same recommendation problem, and now I’m having the problem of keeping this channel in my feed & notifications.
It feels like the algorithm only wants to push the easy to admin and create: “generic science news, narrated by Google’s bot voice” content.
for someone who's "a little crazy", this is the sanest video on quantum mechanics i've seen!
yeah he outdid SO many science communicators with this. especially because he tackles the role of the observer that caused so much science woo.
a long time ago someone once was confused about schrodinger's cat and said how can a cat be in a superposition of alive and dead. i said it can't, a cat is an observer. at least it made them think about it ... (although it's the radiation detector that is probably the actual observer).
@@MusicalRaichu He only explains the basic DS experiment.
The erase of information or the delayed choice experiment gave wave patterns too.
@@MusicalRaichu Yes, it raises all sorts of questions. None of them comfortable. The people commenting here that this video comes as a big relief to them really need to find out more about quantum mechanics and the experimentation behind it.
Exactly. I finally understood at least something 😀
People who already watch PBS Spacetime and Kurzgezagt and Isaac Arthur might see this channel and assume that it's entry level stuff and that they won't learn anything new from it, but this channel is truly awesome. Yes, this video is specifically about myths and dispelling them, but to a large extent, every video on this channel has a mythbusting element to it. I learn so much from this channel. The format is so concise, he fits a lot of information into short videos and with the clones serving as interlocutors, the information is made very digestible. Many other youtube videos would take a lot longer to deliver the same information content and it wouldn't be divided into bite-sized chunks. This is really great. Thanks for doing what you do Nick.
Yeah, there's something about his style that makes these videos look old. The first few videos I saw gave me an impression that these videos are from 2012 circa and he no longer makes videos, I don't why.
You really shouldn't mix PBS Spacetime and The Science Asylum with Kurzgezagt an Isaac Arthur. The former are much more rigorous and accurate, and the last one is just Elmer Fudd daydreaming about space.
@@acruzp He's not Elmer Fudd, but his content isn't exactly science. It's science themed fantasy. He puts some effort into it, but it's still fantasy.
I find all those channels too much of fantasies or jargons. Just watch a video on twin paradox on this channel and other. Other channels would fuck your brain. I feel they just want to talk more about parallel universe and alternate reality than this universe
Exactly
It’s wonderful to know that I wasn’t crazy for coming to the same conclusion about these myths as shown in this video. However, it’s awful to realize that I received a Bachelor in Physics learning these myths with no explanation. Thank you for making this video!
I'm glad I could make you feel better about your conclusions 👍
What about Delayed-choice quantum eraser - Wikipedia
I believe it is true that Nick and this channel are severely underrated... This video is a must-watch for those who seek clarity about quantum mechanics! I can't believe I watched this 5 years late... the clarity with which the myths are dispelled are so impressive, and not easy to find elsewhere!
I believe he talks certainties where only theories exist. This bugs me no end
This video is so awesome, that Schrödinger both likes it and likes it.
Didn't Schrodinger die in 1961 or is quantum mechanics keeping him alive in the space/time domain???
@@kansasthunderman1 he is both alive and dead until you look in the coffin
@@kansasthunderman1 neither of that, he is kind of alive and dead at the same time
@@markmd9 so he is undead ...
@@uwose He is both dead and undead at the same time
Please do more of these! Clearing up the misconceptions is definitely your greatest contribution to public science education. You clear up in ten minutes what took me years of reading and research to get wrong! Thanks!
Its not that a wave is a particle or a particle is a wave, you can not have something be two things at once that contradicts the laws of mathematical function. So if you assume a duality idea then your idea is not a function and thus nondeferentiable and noncontinous therefore calculus falls apart. Thats why we have to see it as a particle or a wave so that calculus can be useful but not at the same time.
Are you a physicist ?
To be honest, this video actually really helped clear a lot up for me. Thanks for making this!
You're welcome, Willie :-)
these videos always make me more confused than I ever was about these subjects.
@@ScienceAsylum Make a video(part2) about delayed choice experiment . Cause this videos incomplete.
It is wrong.
@@obvioustruth what is wrong?
THANK YOU!!!
This is one of the most frustrating concepts I still hear being taught today. I wish more ppl would just understand this. It’s all waves. “Particles” are just measurements of waves at certain positions we choose to measure. That’s literally the definition of quanta.
no one says music has "wave-particle" duality when you take a sample at an specific interval and quantize the wave...
@@monad_tcp Quantizing in music means programmatically fitting the sample to the beat. In quantum physics a quanta is just an amount that is measured. So a particle, which is a quanta, is just the energy of a wave measured at a specific point.
Though in this case they are waves of probability right? Apologies I haven’t rewatched the video to re-familiarise myself.
@@monad_tcp Sound doesn't travel in space. That is interesting. The energy of it does seem to travel in space but cannot translate into sound output before there is f ex oxygen in the room or atmosphere or any volumous locality. I have seen the theory of phonons. First I thought it was comical but I am much less skeptical to it now. But then you have some different descriptions of what phonons can be. Note that there are different main categories for the various types of waves. Not to be forgotten.
@@KibyNykraft Phonons definitely are a thing, as waves carry energy. But sound is usually mediated by a medium.
What's the medium that mediate photons ? The Higgs field ? that mediates all particles in the standard model, doesn't it?
The parallels between quantum physics and audio are amazing.
I always thought that double slit experiment seemed sketch the way people were interpreting it. It also never made sense to me how observing an event could change the outcome, but knowing it's a particle interacting makes alot more sense
Yes! Thank you, Nick. I'm tired of hearing quantum mechanics being used to justify magical thinking.
Biocentrism believers need to see this. Not that they'll accept it.
Fair enough. But if magical thinking is the symptom of interest, then religion, not science, is the disease to be treated first.
just saying, the word "magic" must be defined if we are going to communicate this. quantum mechanics explains a lot of what people call "magic." but magic can also infer pure BS. it just needs to be defined. such as harry potter vs experiments proving things like levitation, but on the MICROSCOPIC level.
Quantum mechanics is actually magical in some sense like entire reality.
Overzealous interest in both religion and science has the potential to destroy the dogma in each, and get you killed at the same time. 😜
You deserve much more subscribers
I totally do agree with you
We can help his channel grow by sharing his videos!
Love the Weezy Waiter love!
Also, as a physics student at Cambridge, I really want to say your videos are amazing man. I'm so impressed at how well you are able to present this stuff for such a young target audience. You do so with more clarity than most people can explain it to older people. Even though I've studied most of this stuff already, every now and again I see something more clearly than I did before.
Thank you Nick for clearing up those myths. Most channels that make videos on the double slit experiment or talk about Quantum Mechanics really push the "mystic" aspects or explain it wrong. You do a great job of explaining the actual true facts about science.
Yeah, naming no names DR QUANTUM from WHAT THE BLEEP / DOWN THE RABBIT HOLE!
It's refreshing to hear someone mention that observation is interraction, and how such ties in with Heisenberg.
2:50
Electron: What ‘ya gonna do about it, punk?
Me: Get back in your atom, you punk.
yeah this is one of the most comprehensive video's i have ever seen on the double slit experiment.
no one ever really focuses on what happens when the particle has an interaction before going trough the slit.
and most importantly i barely ever seen anyone remove the "role" of the observer that has made so much science woo
you sir deserve a hundred fold in subscribers and this can easily be used for high school.
zool201975 his is not comprehensive, it's full of errors!
for instance ?
zool201975 all he has done is denie that quantum weirdness exist.
zool201975 he hadn't really explained anything, just made adhack arguments.
For instance he says that observation adds Photons thus interfering with the experiment.
He can't know that because it's never been demonstrated. He can not think of a way in which we can get these results, so he assumes that we just haven't detected interference yet.
I am distressed by all the misconceptions about quantum mechanics. This video gave me solace...
A Quantum of Solace *plays James Bond theme
Ha!
Master Therion
Another great display of master punmanship! 😀
Therion-sama? You're here too? You're omnipresent 😂
Feynstein 100
Yeah, I only recently discovered this channel and I love it. Given all the science channels I'm subscribed to, I can't believe YT didn't recommend this sooner. What a hidden gem ^_^
+Master Therion Yeah this channel is crazy!! (Two can play that game :P)
This channel deserves WAY more attention.
Excellent, Nick Lucid. Keep It Up!
Hey Crazies, let's start a movement to get Nick installed as head of the Department Of Education! Time to reword some textbooks!
For future readers confused by this comment: in the United States, The People, via their government(s), used to provide education as a public service so that citizens would be qualified to participate in a democracy. There was a "Department of Education" tasked with seeing this policy through, not unlike the "Department of War For Profit, Bitches" and the "Department of Fuck Poor People" that you're probably familiar with.
@@bumpty9830 Aaah the good ol' passive agressive approches
Anime Aboutalib Do you have any content to add, or does it simply make you feel better to dismissively label uncomfortable ideas so you don't have to think more about them?
@@bumpty9830 Actually I was complimenting your statement.
Amine Aboutalib It's not clear that you were saying anything at all about my statement. To what "passive agressive approch" were you referring? Can you elaborate a little?
One of the best physics channel on UA-cam, keep it up
That episode fried my mind. It took the exact opposite of what I was expecting with such a title, and made quantum physics even more interesting alltogether. Thank you !
Really excellent video!
Yes, it’s not that its been *observed* , it’s that it’s *interacted with something* and become entangled with it.
Sorry to be that guy, but this video is missing the corollary to Myth #1: particles never _truly_ behave like objects, but also never truly behave like waves! The wavelike behavior of quantum particles is never quite the same as that of ordinary classical waves, and this is clearest for experiments with single particles.
I share some of the frustration with the concept of wave particle duality because it often hinders more than helps (and resulting confusions sometimes find their way even into high profile journals), but there's a core of truth to it, which should be understood in terms of the complementarity principle. Quantum particles share properties with both ordinary classical particles and ordinary classical waves, but such properties are never manifest in the same experiment. That's the core.
With regards to the second myth, I have a somewhat more serious contention. The language you used was necessarily vague, so I'm not super sure what you meant, but it should be emphasized that the idea of collapse has no neat dynamical solution as the picture of a photon "changing the wavefunction" of an electron implies. The state of the electron after the interaction is still a superposition of position states, and thus delocalized, but now it is entangled with the photon, so that more properly we should only speak of the electron+photon combined state. Once the state of the _photon_ is measured, hopefully by the physicist who set up the experiment, then we finally have a collapse. It happens when the observer learns something new about the system and updates the quantum state, his book-keeping device.
This is ok and doesn't imply in magical "mind over matter" quantum magic because the quantum state is not a physical object per se. It's a calculational tool that codifies the experimenter's knowledge of the system. Because it is a quantum system, it behaves in classically strange ways, but the state really is just a thinking tool. What can be surprising is that this is true modulo some trivial corrections even if you "interpret" quantum mechanics in some nonstandard way!
Is this something like:
The totality of existence cannot be computed?
LaPlace's Demon still couldn't predict the future due to uncertainty principle, right?
It Is ok to Say quantum object share properties of Classic wave and particle object but them aren't neither a wave neither object ?
Nah he couldn't predict the future because of hidden variables like the total amount of objects in the solar system, total number of stars in the galaxy, etc. The uncertainty principle is one of the many variables that has to be accounted for when predicted the future to an exact. If you want to predict the future of everything to be exact (which is impossible due to the amount of variables that are needed that we can't possibly get) you would have to know exactly how many particles are, where they are, and all of the energy content of each particle (by energy content I mean literally all the internal kinetic energy, the kinetic energy of the combined particles of larger objects and all of the potential energy). Which this somewhat has to do with the uncertainty principal but that would only matter once we have found every particle
Does it mean that when the photon hit the electron, the electron doesn't become more localized than before the interaction? Is it only localized after the photon be measured?
@@aalmadoestado1169 According to this science asylum video, the higher the frequency of the photon, the sharper is the wave of the electron. The animation seems to say that the peak intensity increase and bandwidth (spread of frequency) decrease with high energy photon.
The uncertainty principle should not be extended to vast macroscopic dynamic like stars and planet.
All it says is exactly what electrical engineers know about high frequency waves: if your wave is slow, you can't measure with high precision. Visible light is about 500 tera hertz. Compared to the computer clock of 5 ghz, you need to multiply by 100 to get 500 ghz, then multiply by 1000 to reach the frequency of green light.
Blue ray disk can store more than the original cd format that used infrared because blue light can be concentrated to a smaller spot. Uv would be better and x ray disk even more.
Higher frequency give better precision but timing, phase, becomes less precise. That is the electrical engineer way to intuitively clarify the obscur concept of uncertainty.
Quantum particle: "Stop watching me"
Drake Dragon
But the video just told you that the particle doesn't care if you're watching, the particle cares if you shine a light on it.
S-senpai y-you noticed me! I may have spent too much time on 9gag
@@kk346592 The delayed choice experiment says otherwise.
It's not me, its my internet connection.
I always feel like somebody's watching me...
"Notification Squad" checking in. No, seriously, awesome to see more from the Asylum! Jumped on this immediately. :D
Sir, I am so glade I found your channel. I very much appreciate your clear and direct interpretations. It has helped me clear up a lot of the misconceptions I have picked up elsewhere on other science UA-cam channels. Keep up the good work!
you always put some interesting perspective that you don't find in the rest of the science channels I watch, so good work crazy man.
I know you call yourself crazy, but you literally took all the crazy out of these myths.
(Subscribed by the way.)
Sometimes the crazy opinion is the sanest opinion.
@@ScienceAsylum Oh wow, thanks for replying! If you don't mind I'd love if you could answer a question for me?
I watched Eric Weinstein's podcast with Joe Rogan and came upon this tidbit:
ua-cam.com/video/X9JLij1obHY/v-deo.html
It goes on until 50:22, in it Eric Weinstein states that there are "good" and "bad" (I know, vague) questions to ask about Quantum Physics. If you ask a *good* question, you get a deterministic answer. If you ask a *bad* question, you get a probabilistic answer.
I wanted to know if what he says is accurate? From your explanation on how mirrors work it seems like his assertion is inaccurate.
1) From what I understand, Eric Weinstein isn't the most reputable physicist. I don't know many details, but he has a bad reputation.
2) I wouldn't really agree with what he said about quantum physics. _All_ answers to quantum mechanical questions are probabilistic answers. It's just that some probabilities are narrow enough to _appear_ deterministic.
3) There are no bad questions. All questions are good. It's the intention and expectations behind the question that could possibly be bad.
@@ScienceAsylum Thank you so much for this explanation! This really does clear things up for me, since after watching his appearance on JR's podcast the videos I watched and material I read seemed to contradict what he was saying and caused much confusion.
I like this guys; he has the balls that other does not!
You earn, again, my like...fast fast!!!
...this guy; ...that others do not
You do a great job in mopping up after other people's spilled misconceptions.
I must jump to the conclusion... that you're right and you clarify a lot of things in a very straightforward way. I knew all this (not without some difficulty learning about them) but a lot of people don't and even Sean Caroll was manipulated recently into conceding to the "observer effect" in ways that leave too much room for wild speculation, so this kind of clarification is very much needed, thank you.
One of the best science channels on youtube by far
You have never disappointed me, every video you upload is entertaining, educational, and easy to understand. I don’t know how you did it but well done!
This has confused me for years, mainly because all the textbooks explained it horribly every single time.
And here in 7 minutes you clarified the whole thing
thankyou very much for your reply,,,,,,,,my detector is working fine but my recorder is on the blink I never know if it's working or not sometimes it records and sometimes it don't ,,,would I know if it is working by looking at the results ie a wave would say it was not recorded and my recorder was not working at that time and two lines would tell me it was working .thanks for your reply.
If spectator was unnecessary, how the heck did you got these results ? 5:55
THANK YOU... so many explanations of quantum mechanics fall into the traps you describe here, that a viewer can't help be confused by the outlandish claims, and these myths I think contribute to confusion and misunderstanding, and hurt the credibility of those explanations. You clearly state these misconceptions and it is a relief to find that quantum behavior isn't nearly as off the wall as it so often is made to sound.
What I really love is the recap that you give at the end, so I don't finish the video like "....what exactly did I just learn?"
One of your better video's. Nice Job.
You have no idea how much I love your channel, up there with 3blue1brown, Minutephysics, Vsauce and Mindyourdecisions.
Thanks! :-D
I can't know how long you've been around on the science side of youtube but I'd like to make sure you're not missing out on Scishow and the Camebridge University channels like Numberphile
whoeveriam0iam14222 Yes I also LOVE numberphile, mathematician James Grime is the best!
Hey, the one question left hanging for me is this: when you say electrons are waves, does this mean each of them is a "wave", or that groups of them travel in waves? This is always hard for me to grasp, because all other examples of "waves" that I can relate to are waves of some substance, like air or water... the word wave always describes a behavior of those substances, caused by some disturbance of existing matter. So I don't know how to conceptualize a single quantum particle as a "wave"; i don't know what that means; I know their behavior might be described mathematically as a wave, but how to we grasp the idea that an individual piece of matter, a quantum "particle", is by itself a "wave"?
Thanks so much for this video, it has made me feel so much less insane when trying to grasp these concepts of quantum physics! It makes the descriptions sound less like the ravings of a lunatic, as they so often sound when they indulge in misstating these myths!
Awesome explanation! Nick has given beautiful information in this short yet powerful video! Keep it up Nick! I love your videos!
the fact that the collapse of the w.f. still leaves the particule acting as a wave really blow my mind, because I had problems imagining that a particule could interact more than once with other particles if the first interaction would "seal" its fate as an "object".
also your explanation of the H. principle as s.d. was also very cool and refreshing.
I guess we need to get all this concepts wrong before we finally get it right, I mean, I would not understand your videos if I hadn't seen all the others before, it is kind of a paradox, right?
Also, you now got me thinking about the quantum eraser Doble slit experiment. I hope you make a video about that some day.
Yeah, the collapse still leaves it a simple wave spike. That simple wave can slowly drift back to the original too if you leave it alone for awhile, which makes sense if it stays a wave the whole time.
Hi Nick, brilliant as always. Where were the teachers like yourself when I was at school? Cheers.
We usually aren't allowed into the traditional school system.
I want to give a hearty hooray! For how you treated the first two myths. I like the treatment of the third as well, but I'm not sure what Consciousness is so it's hard to tell whether it's important or not until there's the definition. A lot of biologists tell me there is no such thing as consciousness. Stuart Hameroff is famous for saying that as a anesthesiologist he must turn off consciousness during an operation and if you can turn it off it must be something. Rodger Penrose thinks consciousness comes from Qquantum Bbehavior. Who knows? But what you're really addressing is the misconceptions about the double slit in such experiments where people assume that by measurement a conscience agent has modified the behavior of the particles and there I wholeheartedly agree with your interpretation.
Just amazing, the content and the delivering style... 🤯
Superb refutation of the new age quantum myths. Your best video yet.
I had to pause the video at the "watcha gonna do about it punk" part. The combination of that with the electron growing had me laughing hard.
I'm learning so much here, thank you.
😂 I forgot about that joke!
THANK YOUUU. I am so tired of how many people use the conscious observer idea to make it seem like humans are necessary for reality to exist.
Me too, said the baby kangaroo :-)
That’s a false straw man. Obviously an observer is not necessary. The real question is whether human observation has an effect on objects.
Agreed. And it is possible the very people who make that argument would scoff at those, then and now, who think we humans are the center of the universe.
Even WITH humans you can't prove that reality exists.
ua-cam.com/video/j3LGiZWhfVM/v-deo.html
God i love this show, eating dinner while watching right now! Not gonna lie, i was suprised by the first myth!
But this doesn't explain the Delayed Choice Quantum Eraser Experiment where by photons were fired though the double slits and and all of them were measured however half of them were scrambled and the other half weren't; but only the ones that were scrambled still made the interference pattern while the ones that weren't didn't.
Can you please answer this question for me; because this has be vexing me sense i stated looking in to quantum mechanics. the fact that observing something is interacting with it do to photos having to bonce off the electrons makes sense, but when you add the quantum eraser experiment to the mix it just doesn't make sense to me.
Have I been lied to?
PLEASE HELP!
Jacque Coleman The Science Asylum is lying to you, same as Neil Degras Tyson. That's why they won't reply to your valid question.
Jacque Coleman
Excuse my ignorance, but this is the first time I hear of this experiment and I would appreciate yours elaborating on how it factually dismisses or contradicts Nick's statements.
Minarchist 412
Lol, he's lying because he did not respond to the question - yet? What kind of logic is that?
Kostas T.
It's the double slit experiment however using photons instead of electrons. when they fired the photons through the slit it would pass though a crystal that would split the photon into entangled pairs (one photon goes in two entangled ones come out). As you may know when particles are entangled what happens to one happens to the other (some what). After being entangled one photon would go to the wall and the other one would go to be measured. The experiment was set up so that the the photon that is to be measured would only be observed after its entangled partner hit the wall letting the researchers know which slit the photon went through. However the photons still acted like a particle even though they were only observed and measured after the entangled partner hit the wall.
They tried this experiment again however this time they scrambled half of the information so they wouldn't know what half of the photons were doing. the results showed that only the photons that were scrambled acted as a wave and showed and interference pattern while the ones that weren't didn't. all photons were measured and went through the same process but only the ones that were intentionally scrambled acted as waves while the ones that we still had information on didn't.
I don't know if i explained this well enough so here's a link for you
ua-cam.com/video/8ORLN_KwAgs/v-deo.html
and the crystal they used us called an beta barium borate crystal
more here:ua-cam.com/video/2Ut0F4a9dQk/v-deo.html
I know these aren't exactly scholarly sources but this is how I've been learning about this stuff for the past month and its not to different from the science asylum so eh.
I think perhaps you didn’t get the idea. There are no photons, there are only events and the noisy fields that cause them. How do you know there is just one photon going from one place to another when all you actually saw was a single event? But still, we would like an explanation, so we think to ourselves this is quantum FIELD theory, not quantum particle theory; with that in hand, we can think about how a field could cause events. BUT it can’t be a simple classical field, there has to be noise so that the avalanche events that happen in Avalanche PhotoDiodes happen randomly, according to some statistics, not one precisely every second. Think about it, and perhaps also see my channel, where my first video tells an approximately similar story. Not exactly, but similar. My video production is not remotely close to as funny or good as you’ve seen here, of course. There are gaps in the story, but I personally find it cleaner to invoke fields than to invoke photons, particles, objects as causes.
I love your videos on quantum stuff. I do also feel sorry that you have to do so many of them for us. It can't be easy taking some of the toughest science around and making it into cute bite sized videos (you do it well though). I'd love to see some videos on the stuff that gets you really excited. The passion projects, the personal favorites.
Thanks man, I was trying to make exactly this point on reddit, now I will just link to your video
You just saved me a weeks' worth of research and video editing.
Finally, a popsci video that sets things straight about "particles", well done Nick!. QFT soon?
Oh! “They are always waves.” This helped a lot. Thanks!
If they are always waves then why does the interference pattern disappear when the observation equipment is in place at screen 1 and someone is measuring the system?
bitcoinmeetups In my opinion, the interference pattern occurs just when you put the equipment there to take measures and not the opposite.
@@rguimatorresBut that's the opposite of what actually happens.
bitcoinmeetups Sorry, not the interference pattern, just interference in the process.
@@rguimatorres You don't know what you're talking about.
Very educational video! Thanks for showing me the errors of my way and making me stand corrected! 😀
I first learnt about quantum mechanics in the mid sixtees. It fascinated me and sent my mind into a crazy spin.. I must say that it is still spinning in confusion and fascination. I enjoyed ur vidio.... Because I was holding the same myths.
One of your best videos yet Nick! :)
Thanks! Had to be made.
"its always a wave..."..so what is the explanation for is particle like behavior??
The particle (or any object for that matter) is "actually" never a wave or a particle. The existence of the universe is all simply a constant transferring of information. We live in an information system -- like a virtual reality. So called "Quantum Magic" is physically impossible in a truly physical Universe. Therefore, the Universe isn't physical in nature.
Particle means extremely low waveness (but still wave). Waveness is another way to say there is uncertainty or spread in measured results.
Particle like behavior is a low-resolution approximation.
Point-like oscillation in its field. In other words its wave is not spread out much.
@@lawshorizon Yes, I heard this one physicist say: "I don't know what matter is made of but it is not made of matter".
awesome video, i also had some of these misconceptions , thank you for helping me👍
What about the Quantum Eraser?
Yes, I saw a video about this (I think it was on PBS spacetime). And even tho the electrons were measured at the slits, they would still behave as waves if the data of the measurement was deleted.
Yep, what about quantum eraser?
I find the QE fascinating also for what it says about faster than light interaction between entangled particles and its consequences in respect to time.
It only shows spooky action at a distance, no observer was involved, unless you consider electronic measuring devices as such (but that's entanglement or measurement or interaction or interference, not consciousness).
Yes but if i recall correctly the strange part about the eraser is that the entangled particle is manipulated anyway but when it passes through the eraser his "sister" behaves like it was not measured.
en.wikipedia.org/wiki/Quantum_eraser_experiment
First you polarize it and thus the interference pattern is destroyed, second you polarize both entangled photons and the intereference pattern is restored. How does polarization have anything to do with "consciousness" beats me. The word "eraser" is misleading.
This video should have several thousand more likes.
Thanks for another vid Nick! It's nice to get information past the experiments we've already seen, as well as nuggets like "the experimenter was unnecessary" :) (Interesting depth to the initial sound, btw)
This is a great video, one of Nick's many good ones. Idea for video: if electrons are waves, how/why do they have mass? You covered this in "What the HECK is Mass" but very briefly.
Very good. You earned a sub.
LaserGuidedLoogie 6" or a footlong?
It's indeterminant...
LaserGuidedLoogie Mmm, inditerminents. *drools*
Dude, we need to get your subs up. You are consistently awesome!
Awesome video, super common misconceptions with an understandable answer
The only video on Quantum Mechanics that's ever made sense to me. Now I know why. Thanks!
Glad I could help 👍
Thanks for clearing up some misconceptions I've had! I've been binging on your videos and you're amazing at breaking things down for the layman .
Can you make a video on what the "wave" of the particle is? What is wavering? When you have a AM radio wave that is hundreds of feet big, what does that mean? It can't be the photon traveling up and down since that would increase the distance traveled the bigger the wave, and I know that doesn't happen. It's a pattern the photons make? Also... how does light make destructive interference? What happens in the quantum level?
I'm hoping to do a whole series on electromagnetism.
Loved the video!
so the reason the electron appear like two strands when you detect them and not as an interference pattern its because they interact with photons and become less wavey?
Correct. Still wavy, just less wavy.
+The Science Asylum interesting! so there is no paradox involved ?
There seem to be paradoxes like spooky action at a distance and even against the arrow of time, but the "observer effect" is a myth: there's just the "measurement problem".
Savvas Ch. you’re a weirdo too🙄😂😂🙈
Finally a video on the subject that makes sense... Thankyou
You're welcome 😊
High quality explanation with true physical content. Thanks!!!
Every time I think my mind can't be more blown, you put out another video!
Ow!! Just blew a neuron 🤯
Great video BTW, keep up the good work 👍
Very education and keep it up!!!👍
*educative
Thank you for bringing sanity to this subject.
Bro didn't shy away from explaining STANDARD DEVIATION. 👍👍👍👍
Great stuff as always!!! You deserve millions of subs. Keep up the good work!!!!
Kiss ass.; -)
2:15 "Electrons, protons and neutrons are always particles"
2:46: "They are always waves"
So which one is it Mr. Quantum Myth buster expert?
Quantum particles shouldn’t really be called “particles.” They’re really just localized waves... or at least their behavior is described waves.
@@ScienceAsylum
your video's really informative and helps to narrow down on the subjects you presented, however I still have a doubt. What exactly are these waves? I've seen your other videos on quantum field theory and more or less understood that we have these theoretical fields of possible values for different types of subatomic particles. Subsequently, the "waves" that excite these fields are what we perceive as particles. From what I've gathered, these energies that elevate these points in the quantum fields above their vacuum state alter the value of the point in the field (thus elevating it above the vacuum state). Still, there is this one question that keeps bugging me. What is the energy that creates these oscillations?
@@ScienceAsylum isnt electron a quantum particle ? 🙄
@@Bharathkumar-od9je yes it is. but you need to understand what a quantum particle is. its quantum fuzziness. its localised, but its governed by heisenberg uncertainty so its exact location cannot even be known, only the probabilities of its most likely location calculated. particles are not small round marbles, and im not sure waves is the right word either though its closer i suppose, a particle is like a localised quantum bundle of fuzziness. Another way of describing it is a 3-dimensional probability wave, with lobes and poles and spin and quantum fuzziness all over. particles may be drawn as small round marbles, that's not one they are. they were never that. the guys who derived quantum particles never derived particles to be tiny round marbles. think about this, if its fundamental particle,. So it is in a sense a pointlike particle taking up no physical space at all, having no internal structure.it is zero dimensional. that's i guess looking at it from a classical mechanics perspective. However this is complicated by the Heisenberg uncertainty principle, because even an elementary particle, with no internal structure, occupies a nonzero volume. For example, the atomic orbit of an electron in the hydrogen atom occupies a volume of ~10−30 m3.quantum particles have spin, they have a property of angular momentum, which is like the spin of a planet say. So... it's complicated. It is weird in terms of not being intuitive, but it is calculable, it is predictable. And that's why I find mathematical equations or pictorial depictions of equations e.g. like Feynman diagrams which describe what happens when particles interact, math basically describes reality. Reality is mathematically, it obeys mathematical rules/laws. For some reason.
The problem with science at times is its use of metaphors and words that are used colloquially. This causes people to think one thing when scientists mean something else. Hence why "particle" and "observer" are troublesome.
While scientists use "elementary particle" or "point-like particle" to be more clear, journalists tend to conflate scientific terms with colloqiualism, thereby confusing the population. Perhaps "particule" could be used instead, just like animalcule.
As for "observer", it is annoying when laypeople understand that to mean "conscious". I like to think of this another way. Suppose you have an audio recorder recording sounds in the woods. Even though you didn't hear these for yourself, the recorder picked up the sound waves, thus, technically "observed" the sound.
Particule isn't French for particle? Sometimes "wavicle" is used but wave or wavefunction are more precise.
+Luis Aldamiz I wouldn't know. I just had animalcule in mind, which is an outdated word. Molecule even has "cule" in it, although I'm entirely uncertain if that is related.
ITS NOT ABOUT WHEN ITS IS OBSERVED. its about if anyone will ever see it. the camera is only waves alone there in the woods (probably not, probably things in nature) it is only when you see the recording that the event is decided. but then it has ofc always been decided, since it was observed. remember that he just said that your photones interact with the event as an observer. im sure you know observers take in photoes, they do not emit them
I'm sometimes a bit annoyed by your character, but waw your content is always so accurate and to the point. I'm amazed every time I watch you. Thank you. I'm subscribing.
I don't know I just love this channel.. It is interesting, clearing concept. funny and also it gives positive vibes to me.. Thanks Nick..
I wish the rating was with 🌟, I'd give this 12 out of 10 🌟
It's like Curly of The 3 Stooges is giving a physics class. I keep waiting for him to go, "Nyuk, nyuk, nyuk" or "Woo-woo-woo-woo-woo-woo!" Someday he'll do it. Mark my words.
OK - That helps a great deal. Many of the explanations I have seen present the effect of particle duality as solely dependent of human observation. This helps clear that up.
Quality video. Glad I just found this channel.
Very interesting explanations to clarify all the mess with duality in quantum mechanics
When a computer connects to the internet, the keyboard should be automatically disabled until the operator has watched this video a dozen times.
ua-cam.com/video/U5TqIdff_DQ/v-deo.html
XD Lte's leave it at "at least once", watchers don't have so much time (also it can get boring-annoying).
I finally understood what a "observer" is
Can I get a heart? I’m your biggest fan!
Yay! Thanks for the heart!
THERE CAN ONLY BE ONE BIGGEST FAN
There's no room for two biggest fans in this thread.
U hv been commended by many for your unique style of presentation, and many would continue to do so! 🤗.
If there is a Nobel prize for "Best explanation to Lunkheads" like me, u would get it hands down.
Thank you for this. Magnificent coverage.
This should be trending on UA-cam right now.
Thank you so much for this, I've heard so much ridiculous pseudoscience from people who read pop quantum articles and claim that their conciousness actively changes reality.
Brandon Klein Well, people actually change their reality everyday with their consciousness and they don’t need quantum physics to do it... your reality depends on how you perceive it, very simple really.
Anna Yes! Of course people have different perceptions of reality. What science attempts to do is remove that human subjectivity from observation. Also, saying that people "don't need quantum physics to do" anything is a but odd as the theory is a fundamental and inescapable part of reality! One of the best things about science is that its affects are permeating weather or not you're aware of it's inner workings at all times.
Brandon Klein Agreed that science plays a part in everything, that’s not debatable, obviously. I didn’t say people don’t need quantum physics to do anything, I said people don’t need quantum physics to change their reality. That was meant to address those that say they are tired of people who say they can change their reality because of particle duality (meaning the woo-woo people who say quantum physics and metaphysics work together). I am just saying that things like changing one’s perception of their reality is something that anyone can do and it has nothing to do with quantum physics experiments that may or may not suggest that observers are needed for the results to say wave or particle.
Quantum "particles" always being waves really cleared a few things up.
So everything is waves, and we can just trow away this quantum particle mess
It confused me. Another video he said the "wave" was just the probability distribution of where you would find a point object. No physical manifestation of a wave.
Unless you put lots of them together then they will distribute in a wave-like way. They even distribute in a wavelike way with one....hence somethig like pilot-wave theory where particles follow some kind of aethereal wave guiding them (not a favoured theory but demonstrates its like a pixel component to a wave, no? But this theory is derided because the consensus is such waves dont exist!).
So just....they have uncertain position until observed. A wave of probability but are not ' actually' the wave, just uncertain?
I'll admit, I'm one of those that believed consciousness affects reality only just recently. I don't blame anyone for believing this either beings how weird quantum mechanics is and what the double slit experiment implies at first glance. I do, however, fault those who don't actually try to find the truth and instead spout crazy theories about the "FACT" that consciousness creates reality without providing further evidence. I mean, all the proof cited are from the brilliant minds of 100 years ago which I always found strange. Nothing about recent developments in the field. My rabbit hole journey has led me to quantum field theory and this video. Thank you for furthering our knowledge and hopefully this becomes more known on a public level in the near future.
One of the best presentation ever in Science! 🤗😂😂😂