This is a SOUND PARTICLE - Phonon and Quasiparticle Physics Explained by Parth G

[@Grandunifiedcelery]

Today, I'm lucky to find this amazing channel!

[@drurysherry]

Lucky girl😉

[@mobizoid2571]

Yes true

[@lucasamos3725]

Instablaster...

[@wayneyadams]

3:25 The masses of the particles have to be known, since the motion is SHM. 7:30 Holes are extremely useful when we sturdy semiconductors. One type of material has holes which act as transport for electrons.

[@mayurchaudhari850]

When I had first thought about treating sound waves as particles (after learning wave-particle duality) I had named them 'Sonons' (after the word 'sonorous') then decided to call the type of particle 'Pseudoparticle' (meaning 'fake particle'). And now I learn this... which is so much better in fact.

[@custardbuns7557]

It's so cool to see these videos! I am a current student and the topics of these videos are mostly straight from the lecture courses xD You are doing a much better job explaining them than the lecturers for sure!

[@gilopaolo]

incredible video that states so simply and clearly the reasoning behind thinking about these things (without completely disregarding the mathematics). every physics textbook needs this video as a preamble.

[@stellisvideos]

A very smart guy and very well explained! I will show this to my students!

[@snehapatel8292]

Hey Parth! Can you please discuss something about cooper pairs in superconductors in your next video? And this info on quasiparticles is great. It cleared my doubts. Thanks

[@EmptyWasabi]

What a fantastic video. I have joined research team looking into phonons and this helped a ton. Thanks so much, Parth!

[@SALESENGLISH2020]

The coolest physics PhD. I like the simplicity in your explanation. Although, these are very difficult topics, one can get the general concepts from your videos.

[@primsiren1740]

I thought he had a masters not phd

[@yeabtsegadenbegna8273]

this is the best you tube channel i have ever found and i like it especially the Schrodinger equation videos although people assume i cant understand it because i am 12 ,but i like and understand it.

[@colewalker2916]

Well I really don’t understand what you just said

[@prabhasjoshi5560]

Please make a video on Dirac equation please plz please please.🙏🏻

[@deemedepic7721]

That's a good idea

[@JahangirAlam-df4kt]

Agree!!!!!!!!

[@physicschemistryandquantum810]

Yes I also want

[@dhanashrikulkarni5878]

Yes and Drake equation too.. Please Please Please Please Please Discord server

[@наукажизнь-м9б]

That will be very useful

[@ThePentamollisProject]

This video can be a little misleading. As a result of Quantum Mechanical nature of the atoms in a solid, the energies that lattice vibrations carry are quantized. That is, the energy that these vibrational modes will absorb or give out in a scattering process will be in discrete amounts, just like light waves do. So in analogy to the photon theory, the phonon theory was introduced. A phonon is defined as a quantum of energy carried by a lattice vibrational mode. So in my opinion, the energy quantization is the main reason behind the need to introduce the concept of the "sound quasiparticle" and I just feel like it should have been included in the video.

[@GoGreenHeating]

Great episode! I love the idea that Light & Sound are both waves. And how the 'Quasi-partical' is misleading because they are just a quantum mechanical description of a type of oscillation.

[@PhysicsRemovetheBarriers]

Awesome Sir, Stay Blessed

[@Stanger_95]

Such a simplified manner of explanation makes me feel doubtful, when people claim that Physics is hard. Well done 👍

[@robertolazary2807]

Thank you very much to describe this quasiparticle phonon in such a nice way. I have read many papers about quantmecanic but not one about a phonon... Chapeau

[@erezdagan6839]

It's a really great video, thank you for the simplification!

[@marquesvanhinten5626]

Great Video, finally someone whos honest about physicists making up alot of stuff they canot explain, but still being very informative and funny. Thx

[@diediachfortdeutch7842]

Im not even interested in physics but your voice is so calming and engaging.

[@TeflonBon-p1v]

Dude, you seriously deserve more subscribers. Your channel is awesome and I wish I had found it earlier

[@gmweb1304]

Hi Partha. Great video as always! I am interested in the scenario when light can only be described as a particle. I believe there is a Nikola Tesla quote, that light must be a sound wave in the aether. I can only think of the photoelectric effect, when light is described as a particle, but I think even this scenario can be thought of as energy transfer from an EM wave discharging into an atom. Also electrons can be thought of as waves, and not particles, since they diffract, they tunnel, and electrical energy is transferred in a wire at the speed of light, and not at the drift velocity of said electron particle. I think that particle physics is just a model, (a good one) but doesn't fully explain the nature of the universe. Interested to know your thoughts on the matter. Pun intended! 😀

[@cliffmathew]

Well explained. Thank you.

[@varun9045]

Man you seriously deserve millions of subscriber... You are way good at what you do.

[@k1ck8ss]

Great video man! Very informative

[@Khwartz]

Nice and Clear Exposé 👍👌👏👏

[@alexandterfst6532]

very clear, thank you!

[@ellaf72]

This video is amazing and helped me after hours of searching the internet and finding nothing clear. thank you so much!

[@ONRIPRESENCE]

I just realized Parth released this video on my birthday haha. Cool!

[@hariprasath5266]

hey you are doing great , love your videos

[@theartofmusic05]

Nice video Parth keep doing that

[@corrzyLAD]

Wow I literally did a whole course on solid state physics in year 2 uni and didn't fully understand it until now! TYSM Parth my G

[@shama_k2604]

I always wondered what are phonons while studying BCS theory of superconductivity.... Now I understood 🤩

[@nijoignatius1740]

Sir your videos are very cool, thank u for such simplified pictures of physics. Ardent fan 💪

[@reactive3032]

Dude, so good, u make it "sound" so easy, gonna share before getting into more complicated mathematics wiith my children:)

[@dhanashrikulkarni5878]

From 0:7 seconds to 0:14 seconds was something cool...

[@Fon09fon]

All good excellent explanatiom. Kudos! But phonon vre ornio, comes from the Greek word “Phoni” that means voice. Micro-phone, tele-phone, etc.

[@ogheneruonainkori8067]

Thanks A lot for this. I am studying Metallurgical and Materials Engineering . There was an aspect on Thermal Vibrational Heat capacity! I really didn't understand what a phonon was until I watched this video

[@cardguys]

A Parth. A quasivideo. A simplification of complex videos.

[@jlpsinde]

Really very good!

[@achalanand2213]

6:31- The real physics.

[@kalpeshwagh6068]

really enjoyed your video 😌

[@yenyelinito]

You should have 1 billion subs

[@samyogghimire4376]

Very interesting stuff with well explanation 👌👌

[@Mohit-ir5xo]

Plus point to my prior knowledge, so much new realisation

[@himarmarrero42]

More videos about quasiparticles 🙏🏼, there are few videos about them and I found them astonishing

[@ALLAROUNDSP]

What's the "background" in simple terms ?

[@alwaysdisputin9930]

nice explanation. ty

[@samolp365]

Yo. Can you make a video on Antimatter? Btw very nice video full of very good information.

[@lopiklop]

So it's basically the "quantification" part of "quantum physics" as in they are labelling a unit of energy so they can use those measurements in math. It's not necessarily a real thing, it's just kind of like Farenheit vs Kelvin. They not saying that sound is made of particles, they saying lets treat sound waves as a particle for the sake of the math equations.

[@Jopie65]

I understood that quasi particles behave mathematically the same as normal particles. You can even assign quantum properties to them like mass and spin. So... How can we tell that some particles are quasi and some are not? Could it be that particles, of what we think are fundamental, are actually also quasi particles? Could it be that fundamental particles actually don't exist?

[@bobross5716]

we’ve learned over the past few decades that the most (current) fundamental descriptions of particles are excitation of quantum fields (QFT). But to actually answer your question there is no 100% way to guarantee that we’ve ever found the most fundamental particles. we can always conceive of smashing particles at greater and greater energies to see if they have more fundamental particles within them

[@silaskuira9124]

Nice. I personally maintain that photons are quasiparticles and still hold a Newtonian approach. But that's another topic.

[@sumdumbmick]

I kept waiting for you to mention that the movement of the hole is what's called current, and that it's measuring this which gives us the base unit related to electricity in SI. You should maybe do a video exploring how poorly thought out the SI system really is (granted it's mostly due to historical convention established well before a deep understanding was available, so I'm not faulting the originators of the units and ideas that led to these issues, but it's somewhat troublesome to have this blatant issue at the heart of science when science is so proudly touted as allegedly differing from other human pursuits by virtue of changing when provided evidence that it should change). Might even need to be a series. You have things like the mole just being a number but called a unit. The fact that number (Avogadro's) was recently defined but has absolutely no pleasant properties, like you can't even divide it by 3 let alone most other common numbers, it's not a perfect square, nor a perfect cube, etc. The coulomb is not a physically realizable unit. mass and energy are the same, but the gram is not the base unit of either. etc.

[@DanishGSM]

Thanks so much for the video and info. Have a great Day All Good People

[@masterzed1]

5:31 hahahahahaha i am from chile, and my english is not very good but you have and exelent pronunsation and i understand almost all.. Thank you very nuch.

[@giftnfor1265]

I got to admit, i watched that intro dance of yours like 10 times before finishing the video

[@sombrerogalaxy]

So, correct me if I am wrong, we know that photons act as transverse waves and now phonons act as longitudinal waves because they are sound like waves?

[@gym5959]

amazing video

[@asdfasdf71865]

one dimensional autocorrelation of a binary string is alone complex as hell. you can have this way particles not only in 2d, 3d, 4d, but in fractional dimensions also if you manage to carve big fractals

[@knowledgeaccademy3510]

Amazing, do you tell name of software u use for making presentation

[@TheHumanHades]

Me who has been ignoring Parth's second channel, after watching from 0:06 Looks like that channel will be interesting too like this channel.😛 Amazing video again though

[@kiranmr8837]

This is a good one.

[@RafaxDRufus]

Really nice content

[@wiskifrac]

Great and simple explanation! Which are some good references to study phonons? (I'm quite familiar with the wave background - Bloch's theorem, etc.)

[@fernandohadad]

man... that was a solid explanation... no pun intended...

[@alaaouerghi1803]

Thanks man , it really helped me

[@bhushanthakur6469]

Didn't see that coming!

[@tanya8628]

that dance was superrrr cool lmao

[@alexpotts6520]

For real, if I'd attempted something like that I might have nailed the moves but I'd have looked really embarrassed and self-conscious. Parth's just got it, hasn't he?

[@reactive3032]

big up and do contineu to share:)

[@datsmydab-minecraft-and-mo5666]

So Good

[@LuisAldamiz]

What?! I looked at the Wikipedia list of cuasi-particles and there is no "thalasson" yet? How can oceanographers be so backwards?! What about metereologists: do they have their own atmospheric quasi-particle?, how is it (or should be) named?

[@SarahMMorsy]

amazing, i don't study physics and i liked this a lot

[@oflameo8927]

What is the difference between quasi-particles and virtual particles?

[@ONRIPRESENCE]

A quasiparticle is more like an excitation that can be measured with lab tools, but a virtual particle is more like a mathematical object, which cannot be experimentally measured at an instant.

[@medicalchalupa9928]

I love physics. You get to think of everything in particles. Go into biology and say that we’re just particles and people panic

[@dg-hughes]

When electricity was discovered electrons were unknown. So holes are how electricty is seen to flow i.e. positive holes aka conventional flow/conventional current. Actual electron flow how it really happens is the opposite. But in electronics we're stuck with conventional flow not electron flow.

[@beachboardfan9544]

More on this please!

[@OfficialWiseArt]

If sound is composed of its own particles then how do objects each have a specific sound frequency that the object responds to? Is this just a frequency of sound particles that the objects particles is most sensitive too or does the object itself actually have its own sound particles?

[@SneakySteevy]

What do think about specific frenquecies vibration that can move or cut hard materials? Basically Tesla discoveries that everybody laugh at again today but seems pretty ledgit to me. Vibration that can reorganize our body particles at a deeper level.

[@Arthur-xe3pu]

Imagining getting tested on this in an election for ipho representatives as a high school student.(findind the heat capacity of phonons and approximate that T~0 and get the T^3 law

[@WhitefirePL]

Is electric current a quasielectron movement or actual electron movement? :)

[@chriswalker7632]

Does an accelerating reference frame reduce the chance that a particle is going to be Derrida (genuine question)? - i.e does gravity break entanglement (even if maybe it creates entanglement in others ways)?

[@bishaldash6732]

please make a video About General relativity vs quantum physicd

[@bxlawless100]

Fantastic explanation. So clear! PS- It just dawned on me. Could light waves be quasi-waves? Just a thought.

[@TheIntern-gx1em]

hello... I wonder if phonons affect the polarity of the nanoparticles? do you have any data about this?

[@bohanxu6125]

5:00 I think this part is not quite right. whether we can observe particle nature of a certain field, purely depends on how can the field be coupled to other things (like our measurement device) rougly speaking... it has nothing to do with how fundamental the particles are. for instance, if our measurement device has a Hamiltonian that is coupled to the local intensity of the field, then we measure the local intensity. If our measurement device is coupled to the position ket-bra... (a position ket-bra is also the spatial number operator if there is only one particle)... if so, then we measure particle position.. or particle density in general with multiple particles. What we can measure just depends on what operator the Hamiltonian (of the field-measurementDevice coupling) contains. whether the particle is fundamental or not.. doesn't matter.

[@saarausmaan]

Thanks for sharing such knowledge. Actually I want to know which editing app. Or software you use in your videos. I like it ....

[@TheJenecke]

Interesting.

[@marlls1989]

your explication about holes remind-me of classes on pmos devices xD

[@lorenzoroselli8948]

Hello, I was wondering if you could help me with a personal problem I am experiencing with ‘moving particles’ causing words to form in in my auridotry system

[@robmastroianni]

Can I ask if you know anyone studying the noise of recreational pickleball and any physics based protocols for measuring or modeling the sounds?? Grateful for any suggestions.

[@truthphilic7938]

which app do you use for video production?

[@THORGod_of_Thunder]

Plz make video on Dirac equation Feynman diagrams and Einstein feild equations

[@srivatsav9817]

please make a video on how to become a mathematical physicist pls pls pls pls

[@primsiren1740]

1. Practice maths 2. Practice physics 3. Profit

[@siahhengni8319]

very smart

[@vidhyapatil6569]

With which particles fragrance is made or fragrance is wave

[@douglasstrother6584]

Rhinons!

[@alexpotts6520]

Honestly, Parth, ten years from now you will be a mainstream figure like Professor Brian Cox.

[@sarujanrupan4831]

Yep can't wait.

[@imtiazshakil]

Plesse make a video about space time

[@tomaburque]

Explain why major chords sound happy and minor chords sound sad, and win the Noble Prize.

[@Ludens93]

The trance particle

[@nafishsarwar2077]

Are gravitons quasiparticles as well?

[@bobross5716]

gravitons (if are actually experimentally verified) are meant to be real particles. they are meant to be a quantified particle of the gravitational force, just like every other force. However we know that gravity is really a fictitious force and does not act the same as the other forces. All this to say: no, they are not quasiparticles

[@medicalchalupa9928]

Everything is quasiparticles in entropy. Everything we’ve discovered is us seeing the pattern of entropy that allows for it to exist in the first place. We’re just quasiparticles. Next time you think anything, it’s quasiparticles. Confirmed free will doesn’t exist. Boom quasiparticles out