Bands; Free Electron Approximation, Tight Binding Approximation

[@razz6475]

Honestly you're a gift to this world. So much of clarity. Thank you Sir. Respect 🙏

[@nimishadutta1083]

Thankyou Sir, for imparting it to us so well.

[@amara8698]

Thank you Professor Haridoss and Thank you NPTEL

[@saadrabbani1]

I am highly grateful to you sir, made my concepts of physics of materials much much better in your series of courses.!:)

[@pradeepsharma_1962]

A fantastic video due to its most clear approach.Many thanks to teacher giving the lecture.Sir ,I salute you.

[@instrukcijekoper7433]

Your classes are gold. Thank you sir.

[@gauthambekal235]

I went ahead and forgot I had not liked the video so came back!

[@ritunain2803]

same here..i liked each and every comment...

[@ankitlabh]

He is a good teacher

[@elamvaluthis7268]

Sincere teaching excels.

[@mrinmoymandal2695]

How the mettalic bands overlap in the distortion curve where there is always a gap??plzz xplain anyone (15:25)

[@PhysicsMath]

Uper band is half field called conductor band. there is a gap but we are not interested . Because for conducting current the electron not come from valancy band but from conducting band. Conducting band is not fully field

[@PhysicsMath]

why half field ? why don't full filled? . imagine water in tank so if you give a different it always go from higher to lower potential , if it is completely filed for increasing or decreasing we have to cross the forbiden gap which required greater energy..

[@ashwin2112]

And today I understood that my 12th std physics textbook tried to teach both of these models without even mentioning them in jumbled fashion. Oh, how it was confusing.!!!

[@pradipamarandi6469]

Well explained sir...thank u

[@Thenewgreenmaju]

Excellent!!!

[@keag2425]

Thanks alot

[@neetu1466]

When overlapping of bands is occuring , since still there is forbidden gap then how electrons can easily move to upper level ? May b i m not visualising it correctly so please help me .

[@sachleensingh56]

These are just schematics. In actual metals electrons with conduction band energy are free(not bound to their cores) which is not the case with electrons with valence band energies.

[@ghulammohiudinganaie6556]

@@sachleensingh56 since excusion principle is applicable to atoms why is prof applying it to combined solid...

[@anniemshaji2698]

21:00

[@ranayousaf5091]

Sir book refer ki Jaya ga in topic ki

[@mecsumit]

Super !!!

[@hal5720]

20:58

[@ramashish7695]

Very nice vidio

[@philipgautschi]

nice explentaion :

[@bagdatzhunisbekov]

oooo

[@meeehc]

i thought i knew english....