Share on facebook

Share on twitter

16 768 views | 29 May. 2019

Zarin Tasnim

You explain things quite visually. It's so helpful to understand.. thank you!!

StringSam

amazing explanation!!!

Ayah Taihi

So clear! Thanks :)

Josemaría Colín Gálvez

Bro, thaks for the explanation, it was so cool

omansh dhawan

Study bloch theorem in hindi at https://youtu.be/-wiVyKdhwhE

Share on facebook

Share on twitter

135 views | 7 Feb. 2020

Thank you for

Crypto Phrenik

Great summary. I recently discovered waves and am thoroughly impressed. Subbed

Share on facebook

Share on twitter

384 065 views | 30 Mar. 2010

Overtones are the basic

C M33

Very good work, thank you.

Gotex 27

Awesome tutorial, what's the melody in the beginning? Sounds like something by Beethoven. Name eludes me

Lee Bee

ευχαριστώ :)

Berry the Technoman

So basi caly it's fucking awesome

Julian Edwards

i have an essay due in on this tomorrow, ur my fucking hero

35 465 views | days ago

191 views | days ago

Great explanation ?

I have a qm exam tmrw and only learned about this now. Wish me luck

So I understand this, and can see that crystal momentum is just spatial frequency. But I am having a lot of trouble seeing how photons come into the picture. I’m cool with Laue and Bragg, and I’ve seen that there is a classical way to prove that wave number is conserved at the interface with snell’s law. But why and how does all of that relate to band structure? Any good videos covering this?

Helo sr nice explanation..I want to ask how u made such video....means device or software..plz reply

Best explanation of bloch's theorem in YT

Hi Jordan,

thank you for your videos, they are very good. Please, I have a question about this one. Just before you introduce u_k(x) function 10:30. There is a step where you rewrite PSI(x) function with index k in the exponent. Where did the "

"a" go?

Thank you sir

lot of thanks from mongolia ;)))

4.46 it is not clearly nonsense, it is the definiton of infinity in complex analysis, where the straight lines equal to circles. Why? Because 2 straights cut themselves in the same amount of points like circles. 1,2 or infinity (The breaking fact is that infitiy is always a point where they cut themselves) This is because e^ikx is non ambigious. Imagine a map on polar coordinates (stereographic projection from the north pole) then every radial path you take to infinity leads you to the north pole. It will help you if you draw the mapping of the square Rx[0,2pi) via exp(x+iy).

great video, thanks

The best explanation so far in internet!!!

So k is the crystal momentum and not the wave vector?

Studying for my physical chemistry class, this is actually great! Thanks!!!!

Nicely explained.

Thank you

The new index at @10:44 should be (2*pi*s)/(N*a)

Why should the wave function of a particle in a periodic potential be an eigenfunction of the translation operator? (As it was written in 2: 55) How does this derive from the equality of the values of the wave functions for "x "and" x+a"? It is not entirely clear why we should assume namely this relation- with the product, and not with the sum operation, for example?

Other issue. Is it really necessary to make a periodic closure of the wave function on the lattice boundaries to prove Bloch's theorem?

Enjoyed.

Very interesting explanation. I followed you very well up until the point where you established C^N=1 (i.e. C is the nth root of unity). Why do we need a fancy function to satisfy this condition? C=1 itself is a solution isn't it?

best explanation of blochs theorem ..very informative

"Space is curved anyway, so deal with it"

That got real for a second lol.

Thank you sir for the wonderful explanation

Which book u have been used

A small question. Does this also explain if asked for super lattices? Like those infinite square wells?

Thanks in advance. ♥

It's an amazing explanation, Thanks a lot from Saudi Arabia

You have no idea how much favor you are doing for explaining these things...