The Quantum Wavefunction Explained

[@pkang27]

My word, I've watched many introductory lay-men quantum physics videos on KZbin, but this one explains the wave function so clearly and provides insight into the deeper details. Thanks so much!

[@ParthGChannel]

This is so nicely explained!

[@mayankmohit1261]

Nicely as yours😄

[@ishaanvohra2311]

First Sabine and now Parth! The physics youtubers are all showing up one by one

[@JavierSalcedoC]

I don't always make jokes about Quantum Physics, but when I do, I don't

[@dollyogatis5008]

Oh you had me laughing😂😂😂

[@asanzmart]

@@avw5kt Goood joke, but may be you mean 1/ sqr(2) x|good> + 1/sqr(2) x |bad>

[@ABDxLM]

Bro I am in 10th standard and I want to be a quantum physicist Plz tell me what are steps

[@nope69q]

*probably*

[@fruitofthepoisonoustree6562]

You’re joke is actually one of the funniest.

[@melm4251]

Glad to see you pointing out superposition isn't just a quantum phenomena... so many people get hung up on the idea but it's so basic, especially when you talk about it using water or music waves

[@gardenhead92]

And neither is the uncertainty principal! These concepts are so much easier to understand once you realize they apply to all waves. The only purely quantum phenomenon that I can think of off the top of my head is wavefunction collapse (i.e. Born rule).

[@melm4251]

@@gardenhead92 yeah i remember seeing a 3blue1brown video on this talking about radar as a classical example of uncertainty.. something about fourier transforms and conjugate variables (it's been a while haha)

[@yash1152]

@@gardenhead92 yeah i was thinking same, and maybe quantum entanglement too??

[@sebastianclarke2441]

Well done on another beautifully detailed yet concise window into the inner workings of nature. One of your finest yet!

[@QuantumAD09]

This is what I was looking for, easy diagram easy explanation. This is the best video I could find 🎉🎉🎉.

[@Kumurajiva]

This is so fabulous! 👏

[@hritakshtripathi3701]

i haven't studied anything like this yet, but the video has me on my guards

[@yash1152]

what does that mean?? "caught me on my guards"

[@megamanx466]

@@yash1152 "Has me on guard" is an English/American expression roughly meaning: to feel leery or suspicious about *or* to put up one's mental defense in anticipation of an event. Another similar expression is to "brace yourself" or "brace myself" roughly meaning: to anchor your mental state in anticipation of (typically) bad news. Sort of when you hear on a TV show or movie where the characters say, "Brace for impact!"(but instead it would be in a psychological sense).😅

[@yash1152]

@@megamanx466 ahwww, ohkay. I sort of knew that sense, but couldnt see how that fit here. so thought to ask. But now on reading it, it makes sense. Likely that the OP/person got intimidated from the subject right!!??

[@megamanx466]

@@yash1152 Indeed, that's the way it looks. 😅

[@yash1152]

@@megamanx466 lol yeah. i can see how it seems intimidating. But now that i have studied the oscillations and (mechanical) wave phenonmena at even just high school level - this type of content is much much easier to follow.... (i already knew complex numbers, so, yeah, that helped too obv - and both these things are just Class XI-th content) I hope that OP doesnt develop a fear for this subject *just by seeing some random video/article not intended as an introduction* to beginners (or any subject by extension), for all the beauty and intricacies, excitements and surprises it may contain. Plus, it's not *thaaaatt hard* to have the basics from an introductory material.

[@benco804]

These are best videos on quantum physics.

[@MaliceInWonderland0248]

It's rare to find a KZbinr who's good good advertisements

[@imamastermind]

Thank you for making this video! I've been trying to understand this concept since a week! Now its all clear!

[@snappycattimesten]

Back on form with this video. Cheers.

[@mrcooki3monster928]

Thank you for explaining the little individual signs and symbols!

[@Mathcambo]

The teacher is really good. I will learn from. I will make a video following the teacher to share with everyone.

[@michaelzap8528]

Brilliant. Just as i thought what wave function is. It confirms th idea hanging around my brain for long time.

[@brianegendorf2023]

I always describe it as, imagine a single math equation that is basically a recipe book that explains how to make every possible recipe in every possible kitchen, using every possible oven, at every possible temperature, at every possible cooking time, using every ingredient possible in every container possible, and every possible spice.

[@schmetterling4477]

Not the worst explanation, actually.

[@kavishgupta1710]

Why wave functions are complex valued? Are the matter waves and the wave function the same thing?

[@ThePicManiac]

Such nice animations, good work ♥️

[@Chunat]

Would you please post about optics/photonics too? I'm learning a lot of stuffs in a very clear way than I did in the classroom for hours and hours some years back. Thank you so much!

[@Dileswarsahu2100]

Always the best 👍💯 work on physics is in Dos

[@e11eohe11e]

I wish I had this video during my first graduate class in complex analysis...

[@kvantanet2297]

Great video!

[@СергейЯкушев-ъ3д]

Perfect explanation! Thanx for clarity

[@radha94]

I have a question is Gravity a Fictitious force could u please make a video about it??????????????????????????

[@HebaruSan]

Seems like we should be paying more attention to the "different mathematical operations on the wave function for each one" and how somethings in the real world might be performing those operations on something that obeys the Schrödinger equation.

[@UROOZFATIMA190]

GREAT.....🔥🔥⚡

[@floydmaseda]

Does a wavefunction actually have to be C^2, or can it satisfy Schrodinger's equation as a distribution? Particularly if the potential function is not continuous (e.g. a dirac delta potential), why would we expect the wavefunction itself to be continuous?

[@kuznip]

Great explanation. But I think, it's not correct for 1:49. While k controls wavelength (and thus -frequency, as well!), the omega controls PHASE (and that's correctly shown on chart) and not the frequency.

[@woosnext]

thank you. I always wondered what goes up and down in these waves. I‘m still confused but less, I guess

[@drewhanna9057]

I think what would help me to understand this would be to know why we need or want to have a wave function. Understanding purpose would help me to understand what the wave function is better.

[@schmetterling4477]

We want to calculate the physical behavior of quantum mechanical systems like atoms. One way to do that is the wave function. There are other ways that work better, depending on the kind of system we are looking at. Mathematically the wave function approach is probably the easiest.

[@akmarals1718]

Thank you so much!

[@dosomething3]

Terrific video

[@TheTastyPancake]

Great vid as always :)

[@satorimystic]

The Aether "wobbles" AND wiggles ... It is, simply ... THE MEDIUM where ALL Energy, Frequency, and Vibration dwell in Time ... Motion in Time through the Aether is 'all that MATTERS'. 👁️👁️

[@megamanx466]

👀

[@dipanshigupta8593]

Outstanding

[@zakirhussain-js9ku]

A quantum wavefunction is a mathematical equation which describes probable path & position of a particle in motion. It combine properties of particle & properties of its associated wave. When particle stops its motion or is observed wave associated with the particle dissipates/disperses leaving the particle alone & wavefunction collapses.

[@lepidoptera9337]

Nope. :-)

[@RomainPuech]

You forgot to add the additional video on the top right corner of the screen

[@yash1152]

they are shown to me :thinking:

[@josenova1370]

I have a question sorta unrelated to this topic. What even are the properties of elementary particles like spin or strangeness. I know it’s a word used to describe a property and that the particle is not actually spinning, but exactly is it trying to represent?

[@wulphstein]

Also, since the physics community has never explained where the physics constants come from (or what the carriers of the physics constants are), then we all have to wonder if the physics community really understands anything.

[@jeanblique389]

At 0'42'', you said that electromagnetic wave-function are real and have a medium, contrary to quantum wave-function. But aren't electromagnetic wave just quantum wave of photon ?

[@oremazz3754]

Very clear, thanks. But you can go further IF you break the classical view that waves & particles are two roles of one entity, MAYBE they are two entities coexisting together... like a vibrating space where particle exists. Philosophical understandable, no huge diffuse particle that gets compact in an instance (collapse) just space being defined so its compact particle is localizable... I'll appreciate if you can comment about this... you can read more in amazon ebook: Space, main actor of quantum and relativistic theories.... best regards

[@gregtechno506]

Where in a 3d box would we most likely find a particle? How do you calculate this and what info do you need to do so

[@schmetterling4477]

In the ground state near the center. You need to solve the Schroedinger equation for a closed box. For a rectangular box the result is the product of three periodic functions with zeros on the walls. For a more general box shape it gets very hard very quickly.

[@xanamata5386]

if those waves are everywhere and compose anything , then when we observe a disruption ,then we see their outcome . you can not spot a drop in an ocean , but you can see the ripples of one when it produce a disruption .

[@thuynguyenthidieu2074]

I'd like to hear some exposition on what is meant by "finding a particle". I mean I want to check my speculation that the "particle" isn't that material/physical either. Like, it is said they do away with particles in Bohmian mechanics. And I want to hear another way of talking about it here. I also guess I can connect with quantum information from there.

[@yash1152]

Bohmian mechanics - oh god, yet another thing. Classical, Lagrangian, Hamiltonian, Hybrid of L and H, and now Bohmian. Quantum too already

[@yash1152]

kzbin.info/www/bejne/o6LSl6iPeN9sndU ohhhhh, Bohmian Mechanics = pilot wave theory. ohkay, got it. 👍

[@jorgepeterbarton]

I thought bohmian mechanics was trying to put more certainty into realism. Like there is an actual wave and there are actual particles riding/pushed by such wave. Although perhaps modern interpretations of pilot wave might suggest a non-real wave or informational wave like the particle just had to know how to move by having knowledge of what a wave /would/ do

[@bitesofmathematics4356]

Well, I'll give it a go. You could go with Richard Feynman here : energy comes in lumps. So 'forces' become discrete transactions amongst various quantum fields. You change your language though eg. 'particle creation' = a field goes to a higher energy level, and 'a particle is destroyed' = the field goes down to a lower level. Hence your desired quantum information is in the field values. A 'particle' is shown to you, the experimenter, by the ( appropriately amplified ) reception of an energy lump. It's a bit like talking of bank balances and their changes, while ignoring the actual written cheques. As long as you keep the bit where each transaction has an associated probability amplitude ( suitably normalised ) then it's the same either way. [aside]For me the difficult part isn't whether you call it 'discrete transactions' or 'particles', but that some transactions which can never be seen ( so called virtual particles ) have been shown as necessary to explain findings. For example to explain the magnetic moment of the electron requires a calculation that includes the electron transacting with itself via virtual entities, and that predicted value agrees phenomenally with experimental findings. Thus it's hard to ignore that 'sum over histories' approach to interactions.[/aside] Anyway we never see electrons. What we have is an electron as a model of interaction with our macroscopic devices. We assume a chain of events from the small scale to the large in order to be consistent. For instance the Higgs Boson discovery : where what was actually done was to deduce from a pattern of energy transfers in the LHC apparatus that a certain lump of energy ( or mass equivalent ) existed briefly. I do hope this helps. :-)

[@stoplayin21]

For the cat question it depends on who is observing the cat. If a person follows human experience and laws of nature, then they would say yes that cats dead. If someone who is from another plant experience death in a different way allowing the cat continue surviving. The cat would be alive It’s all about what who is observing and the story tells itself.

[@haveaniceday9697]

I'll watch it after completing my homework...

[@yash1152]

niice

[@yash1152]

did u watch this? AND completed ur homework too?

[@amal3948]

THATS GUD 😉 NICE EXPLANATION

[@cristianmaclachlan2036]

Me encantaría tener este contenido en idioma español algún día 😔 saludos desde Argentina 🇦🇷

[@yuritardid7761]

Date un voltio tiene muchos vídeos de mecánica cuántica, tal vez eso ayude? Pero yo no veo esos videos porque mi español no es tan bueno, saludos desde Estados Unidos!

[@megamanx466]

@MIGUEL ANGEL CORRALES LUNA Indeed. There should be someone on KZbin that can understand and take videos like this translating them into Spanish. Sometimes the makers of such videos like this will even give their permission to use it as long as they are given credit/cited. 😅

[@lambda4931]

To find a particle at a given location implies that particles are not in motion. Is this true. I’ve always imagined particles as always moving. Also, when is it necessary to know where a particle exactly is? It seems the distance from one location within a wave function to another would be extremely small. When does knowing it’s position matter?

[@TheGenerationGapPodcast]

Note that the location is a probability. It can be zero. Meaning tghe location be wrong. We use the wave function to get the probability of finding the particle at a point.

[@DakotaFortnerECAA]

this may be rambling thoughts, but isnt gravitational waves produced by black hole and neutron star collision/ mergers extremely tiny by the time they reach us? The first minute of this video made me wonder if those tiny quantum particles phenomena's are from interacting with the tiny gravity waves produced by the highly energetic mergers like leaves riding ripples in a pond, or something along those lines.

[@yash1152]

i like such rambling thoughts... 'cause thats what we all have :) but these rambling thoughts, in my views, are still much better than those tiktoks lol.

[@daviddealba9886]

So if a quantum wave form is also a particle than would mean a particle would also be equal to a frequency. So would that mean you could manifest a particle with a sound if certain elements were available?

[@PanLamda]

Not sure what you are saying here, but look up "quasiparticles". These are made under specific conditions from classical waves (like sound waves) but exhibit-in a mathematical sense-properties of particles. One example is "Phonons", sound waves behaving like particles "Phonon is a quasiparticle with boson properties corresponding to a propagating vibrational quantum of energy, usually in a crystal lattice. Very roughly, the phonon can therefore be considered a quasi-particle of sound propagating in solids"

[@daviddealba9886]

@@PanLamda So the way I see it quantum mechanics is the security system of everything . Well with quantum entanglement and the randomness of the said entangled particle and where it shows up at it’s safe to say that’s the way it’s designed . It’s so if you try to manipulate matter here it may manifest there with a positive outcome .the sheer randomness guarantees it’s a security system . One that only the creator can crack . It to keep the enemy from doing too much.my opinion

[@mohneeshsharma]

Sir, I want a video on "how to study math and physics on your own: tips for young scientists"

[@valterantonioferreira9968]

Tanks, very nice video.

[@uzairamin5993]

Who is watching without knowing the logic of quantum 😀

[@Padhaikarbhai]

wow brother this no body told me in my class 1:43 u r amazing our class just explains how to solve math like a 16 year old

[@Ebani]

Really? In my "Waves and fluids" class that was the first thing we saw as every kind of wave has those cyclic properties. The first thing we learned was that sine is basically a "moved" cosine (or viceversa).

[@Padhaikarbhai]

@@Ebani um i live in india and i guess u dont know the scene of education in india😞

[@yash1152]

@@Padhaikarbhai ahmmm, these things are covered in NCERT physics too.... Physics.Class XI.Chapter 15.Waves. did u read the chapter from there? i am guessing u skipped NCERT chapter's text and went over through only the exercise part of it.

[@TheGenerationGapPodcast]

That is why the derivative of one is equal to the other. Absolute value

[@shashankchandra1068]

In which epoch was quantum field(the first,earliest QF) was created?was it in planck epoch or GUT epoch or Electroweak epoch or quark epoch or other epochs OR at instant of bigbang?

[@yash1152]

#save

[@shashankchandra1068]

@@yash1152 wt?

[@yash1152]

@@shashankchandra1068 saving for myself for later as currently i dont know about epoch etc

[@shashankchandra1068]

@@yash1152 can u get someone to reply- answer to this ?

[@yash1152]

@@shashankchandra1068 hmm??

[@saswotlamichhane5862]

*I came here to watch ads, but ended up leaving with a PhD*

[@wardippy226]

The last time i was this early the universe was still 50% anti-matter

[@kathleenanderson5782]

Hi Dominic, is there a scalar machine that you would recommend for remote healing? 🙏♥️

[@jorgepeterbarton]

Is it a K or and R, both at once or a universe where R is K?

[@chx1618]

What do you mean by wavefunctions having no medium, unlike electromagnetic waves? EM fields can exist in free space too. What sort of interpretation for EM did you have in mind?

[@schmetterling4477]

The electromagnetic field is one of the possible excitations of empty space. Wave functions don't live in physical space, to begin with. They are elements of what mathematicians call a Hilbert space, which is basically an infinite dimensional linear function space.

[@ShahryarKhan-KHANSOLO-]

The graph shown to illustrate the discontinuity of the gradient/derivative of the wavefunction is not correct. It shows a discontinuity in the value of the wavefunction, not the value of the derivative, and is hence equivalent to the previous graph showing the "break" in the graph, with just the space in between filled in by a line. To show discontinuity in the derivative, you should've shown the slope of the sin curve suddenly change to a non-zero slope and then reconnect to the sin curve later. You did this using a line of infinite slope, which doesn't count, bcs it just illustrate discontinuity in the value of the wavefunction, instead of discontinuity in the derivative.

[@domainofscience]

Yes of course! Thank you this right.

[@googleplususer3009]

Question: Which of the various meanings of "modulus" are you using when you mention the "mod squared of the amplitude"? Looking up the meaning of "modulus" gave me several different explanations.....

[@schmetterling4477]

There is only one definition of modulus (norm, absolute value) for complex numbers. It's the square root of the sum of the squares of the real and imaginary component.

[@hejmeddig3103]

Dating in the quantum world would be wild-you’re both single and in a relationship until someone checks your Facebook status.

[@charleshetrick3152]

If the waves make up everything how are they imaginary? The title of this video dose make sense.

[@maeton-gaming]

Thats because the entire thing is BOLLOCKS ;) a wave is what soemthing DOES not what something IS

[@maeton-gaming]

The actually mechanics behind our reality are more closely conceived by tesla and Steinmetz, and guess what - they both scoffed at quantum physics as utter gobsmack, just rubbish.

[@HebaruSan]

It's a pun, the Schrödinger equation is complex-valued, and complex number contain an imaginary component.

[@kyetexe954]

Dos uploaded a video *clicks immediately*

[@bhargavsharma4869]

Make video on map of rocket science too

[@sumeetsharma7256]

Please solve wavefunction physics for problems.....real physics comes to the fore through problems

[@mighty_wolf]

I can understand it now

[@yash1152]

*Questions:* 0:39 the following wording/speech is correct *"no medium or field"* - the visual only mentions medium - feels a bit odd. 4:15 "continuous gradient" means differentiable right?? ---- *Timestamps:* 0:26 Equation of different waves (mechanical waves, EMW, Quantum matter waves) 1:02 Redirect worth watching (interpretations of QM) 1:16 Wavefunction's equation 2:50 Different operations on ψ for P (different properties: like x, p, E, & spin) like 2:38 for P(p) 3:21 Wavefunction Constraints 5:12 Funding sources

[@a.vignesh4562]

🔥

[@raunakron2061]

Sir please upload year of science 2020🙏🙏

[@Linkwii64]

I always think quantum mechanics as On and Off switch that only appear if something happen to disturb it waves. If I watch this video and it start playing I open the box and look at the cat. Its alive... but if the video finished playing and go away the video end the cat died.

[@TheGenerationGapPodcast]

Did decoherence kill the cat? Or noise from these model singers?

[@bopeacock1943]

I'm going to give up trying to understand I just can't wrap my head around the physical world in math equations

[@GoofyIracingChannel]

dont give up, we weren’t meant to understand probabilities. quantum mechanics are about having an open mind about ambiguities in physics

[@nikolayrayanov2895]

Pilot wave theory :)

[@yash1152]

lolol

[@mrmathman202]

I mean EM waves don't have a medium either unless the EM field is the medium then id argue probability itself is the medium of quantum waves

[@TheGenerationGapPodcast]

I would argue that the medium is our thoughts

[@pan_bacchanal]

❤️❤️❤️

[@nibussss]

We are looking at the physics of extremely tiny things….so as I said on KZbin or fb, if some such particle moves it may interact with a medium that waves….so there may be a medium after all….oh I have to see what nothing is..or we know nothing bout it!!!lol😅

[@schmetterling4477]

I can buy superconductors of basically any size. The idea that quantum mechanics is about "small things" is completely wrong.

[@rajpoottech2090]

If you have any problem related to technology then how can we solve in our channel😊

[@Saka_Mulia]

I want to adopt a cat just so I can name it Deco Herence.

[@deezynar]

All matter is made of something imaginary. Does that mean everything is imaginary?

[@macaroon_nuggets8008]

No, that tool is imaginary.

[@TheGenerationGapPodcast]

Imaginary part expresses the rotation, while the stuff inside the speeds up the spiralling motion

[@KenanSeyidov]

I just wanna say that if I didn’t have knowledge in ode and probability I wouldn’t understand what you mean, so largely inaccessible to layman and if that’s your audience... you know where this is going

[@yash1152]

ahm, so what?? the layman trying to understand - gotta level up to understand certain things. all things cant be made accessible to layman while keeping the rigour intact.

[@KenanSeyidov]

@@yash1152 this is an entertainment channel not a lecture, what rigour are you talking about? You want a layman to take 4 courses to get to ode and watch this video, what leveling up are you talking about? You are a classic elitist engineering ahole. Show empathy or foff.

[@realcygnus]

Nifty

[@jjay6764]

There's a simple answer to this. The wavefunction is REAL but NONPHYSICAL. The reason you have so many interpretations in QM is because people are trying to explain nonphysical behavior in a materialistic way. Entanglement, tunneling, teleportation, superposition of a particle and more occur because subatomic particles are governed by a REAL but NONPHYSICAL wavefunction. Quantum Cryptography supports this. Here's a paper called,"The wave-function is real but nonphysical: A view from counterfactual quantum cryptography" arxiv.org/abs/1311.7127 this was confirmed in experiment and information was sent between two points without the need of a physical particle. Tesla said,“The day science begins to study non-physical phenomena, it will make more progress in one decade than in all the previous centuries of its existence.”

[@yash1152]

#save nice

[@kronoscamron7412]

teacher said : you dont need to understand it, just do the math 😆

[@schmetterling4477]

It's much easier to do the math when you understand what it's about. This video won't do much for you, though. :-)

[@kronoscamron7412]

@@schmetterling4477 neither did my teacher .😟

[@schmetterling4477]

@@kronoscamron7412 I get that. The professor who taught my QM 101 class didn't care to inform himself, either. He got the math right but everything else was total nonsense.

[@wulphstein]

It is absurd to assume that wave functions don't exist. If the Casimir effect proves that virtual photons exist, then why wouldn't wave functions exist? I just don't understand why physicists are too flat earthly to make that connection.

[@TheGenerationGapPodcast]

Generation Gap 1 second ago What exactly does "exist" mean in this context? If a implies b , that does not mean apple implies car.

[@tomcat1112k]

the K looks like a R

[@RickClark58]

Before I tapped the like button it read 666. You can thank me later. Haha.

[@zelmoziggy]

Too complex for an introduction.

[@kld5617]

Isn't this the company that gates has sold all his stocks for

[@yash1152]

which?

[@kld5617]

@@yash1152 schodinger

[@ClockworksOfGL]

If you understand quantum mechanics, then you don’t understand quantum mechanics.

[@ShibinJohn-r1m]

Umma

[@DDRational_]

First!

[@cycklist]

Why are you spelling visualise like an American? And normalisable?

[@Tobi-oi3uf]

Is that Shure SM 57 lmao

[@lien3729]

q-bs NO aether YES

[@Sharperthanu1]

This is crap.The Quantum wave function IS real because it leaves markings on the photographic plate at the back of the double slit experiment when no one is watching the experiment.This is much like when someone knows that a rabbit or squirrel has been in their backyard during the winter by the tracks they leave in the snow

[@lepidoptera9337]

The distribution of photons on a film placed after a double slit is already predicted by Maxwell. You don't need wave functions for that. Even technically wave functions would be the wrong tool because scattering on a double slit is not even unitary.

[@Sharperthanu1]

@@lepidoptera9337 This is something I've never heard of before.Are you trying to say that there is no such thing as a wave function? If you can prove this there are a lot of scientists you should tell this to

[@lepidoptera9337]

@@Sharperthanu1 You never talked to a physicist who understood quantum mechanics before. No deep mystery there. ;-) Of course there is no such thing as a wave function. Wave functions are mathematical abstracts that derive from the same assumptions as probability distributions. They are solutions to Kolmogorov's axioms for independent experiments. Where did you think the unitarity came from? Zeus or Yahweh? Dude... If you ever watch a physicist/amateur who can't tell you that in the first minute of the explanation, it's time to switch the channel. That person doesn't know what quantum mechanics is. They are guessing just as badly as you are. ;-)

[@amal3948]

.

[@amal3948]

...0\

[@gokudragneal7488]

3 years in college with nothing to show for , god no .....

[@James-ll3jb]

Thanks for the pointless pseudoexplanation😂