LEC-21 The Ehrenfest Theorem

[@jeevanupadhyaya3538]

Sir mujhe appka teaching style kafi pasand hei.aapp kisi bhi topic ko slow and conceptually clear way mei samjhate ho.Meine appka classical mechanics ka class kia aur mera pura doubt clear ho gaya.. So thank you so much sir. Mei NPTEL or MIT OCW ka bhi video dekhta hun.. Appke videos ussi quality ki hei.. IIT ke professor bhi appke jitna samjha nahi paate.. Thank u sir for helping hindi speaking students.. Sir dusre youtube channel mei quantity toh hei par app ke video jitna Quality nahi hei.. - - - - - - From Jeevan Upadhya, Assam

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Thanks dear Jeevan Upadhyay For your appreciation but IIT is IIT These are unmatchable

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sir it is not only Student community who is watching these videos but people from whole world gets benefitted from these videos.thanks as many times as there r zeros in avocados number.

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bhai avocado konsa no invent krdia aapne

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Some things i like on ur channel sir 1. Ur style of teaching is awesome 2. Speaking in Hindi is I like vert very much 3. And u clear quantum physics as easy as classical 4. Love u gurudev from Rajasthan

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thanks sir, aapse bhut madad milti h, college me class to achhe se nhi chalta h par yha aapka class krke achha lgta h...

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sir... aap bahut ache pdhate hai.. mene physics me interest kho dia thaa.... ab aa raha hai... thank u sir..

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एकदम गदर पढ़ाते है ।। बुहत वहुत धन्यवाद गुरु देव

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Haryana

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Sir Msc Physics ka kya scope hai # msc + bed + tet = teacher # net + set = professor In dono ke alaawa

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Your teaching style same my mind thought . Thanku sir AAP apni succsess ki or aage badhte rhe

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[@tannu450]

Sir ,50:50 pr x ka differentiation kaise ho jayega , x to khud operator h n

[@ashishkumarsharma1323]

How's 'x' an operator? Can you explain?

[@chandandhuriya5897]

I nearly completed quantum mechanics from ur lecture

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Now I completely understand sir ....Thank u so much👍👍👍👍👍👍👍👍👍👍👍👍👍👍

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Exams are down the road and here you come to rescue us. Thank you sir!

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sir you are great

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Guruji Mza aa gya. Superb explanation sir

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Aap mahan ho sir 🙏🙏🙏

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Thanks dear

[@harshitbairagi4288]

How can i get this notes ???

[@ashishkumarsharma1323]

Thank you professor. Mera ek doubt hai ki at 13:02 why did you say "x" to be a operator? How's that possible?

[@raihanulbashirhridoy6122]

x is the position operator. the operator of position x is the x itself

[@ashishkumarsharma1323]

@@raihanulbashirhridoy6122 toh like will it not be differentiated wrt time?

[@raihanulbashirhridoy6122]

@@ashishkumarsharma1323 Nope. No operator can be differentiated

[@ashishkumarsharma1323]

@@raihanulbashirhridoy6122 then on what is that x operator is acting?

[@raihanulbashirhridoy6122]

@@ashishkumarsharma1323 wave function psi

[@di_sha7]

Thanks sir to make this theorem too easy & understanding..🙏🙏🙏🙏

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good ji 👌

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Good method of teaching

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Well explained sir ji love from odisha

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Thanks dear for your appreciation and comment Sorry dear for delayed response

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Sir excellent explanation

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Best explanation ever sir ji

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thank you sir ... it helped alot.

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Sir aap konse college me padhate ho ❣️

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Beautifully explained Sir. Thank you sir.

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Sir aapke lectures bahut achhe hai....samajh me aa jata hai sab bahut jaldi....ek aur topic ka suggestion tha - coherent states uske bhi lectures upload kar dijiye please... And also thank you so much Sir !!!

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Thank you sir...... 🙏

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Wah! Nice style of teaching

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i have no words for ur effort ....its really very helpful for us ...thnk u very mch sir

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Amazing 👏 🙀

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You are a great teacher sir....Please make videos for iit jam level questions too...There is a lot of students like me waiting for that.

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Thanks dear for your idea I will try to work on it

[@waheedakhtar5709]

sir , bht acha parhaty hain ap 👍, Sir, i have a question At final result ,we found Expectation value of momentum operator which is along x axis,ie Px, then why we have taken volumatric integration and not line integral ie dtau instead of dx???? Sir plz reply

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Sir very nice teaching style And Jo aap beech me example laate h Very amazing. I m very impres to you Khob kamyab hoyye taraqqi kijye

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[@ahasaasahuja9313]

Sir your teaching is awesone... I'm able to understand each and every part of QM... Please can you make lectures on general relativity as I really want to study this.

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great work sir g...........love from Pakistan

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Sir apki teaching se bahut samajh me ata h sir

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Sir इसमें boundry condition को surface integration me ही क्यों लगाते हैं valume integration में क्यों नहीं लगाते हैं।

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Whenever the end points are on boundary There will be boundary condition

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Sir aap great hai..this is completely explain...aajh completely understand huwa...thanks a lot sir

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teaching with carefulness great sir 👍

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sir please perturbation theory ko bhi explain kar dain with derivation

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Sorry dear not this time

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Sir Heisenberg ki applications plz.... And love from Tripura ❤

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Ok dear I will try

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[@AbdulMalik-sg2zg]

Why we take limits as infinity whr wave function is finite.. Also if expectation value of x then why we r using dt

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u r legend

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Dear i am just a student of PHYSICS

[@physicsdarshanam4737]

Sir me exam time pe sirf pass hone ke liye padta hu. Sirf ratta marata hu us time pe samajh kuchh nhi aata par. Lekin aaj aapne sabkuchh samajha diya. Thank you sir

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Ty

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I am feeling very happy to watching your video

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Thanks🙏🙇 sir. Very nice.

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Nice sir g

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Sir why are you using del operator everywhere,,,,,,,, we talk only about one dimension 🤔🤔

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Thanks Alot sir

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Thank u sir❤

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very nice sir 1 bar m hi smj aaga tq soo much sir for this lecture 😍

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Great sir

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You are great

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Sir ru ka spectroscopy ka syllabus batana tha... Watsapp no kya hn

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Dear thanks for watching the video You may send me the syllabus at my what’s app 9729446786

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Please sir make video lectures of solid state physics for b.sc physics student

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Ok dear I will try

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Sir pahale sai me star nhi hai aur dusre me star hai to kt kaise gaya hai

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Sir if possible for u ...band theory of solid and electronics ke upor video banaiye...

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Sorry dear not possible now

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Good morning sir

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good morning bache

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very nicely explained sir thank you

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Sir 2nd sem ki book kb start kroge

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Dear After one week

[@neerajkaushik8287]

okk thanku sir

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sr u r superb

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Thanks dear

[@atoz7388]

Sir where is lecture no 23-29 ????

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Still not recorded

[@atoz7388]

Ok sir , Thank you for replying

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thankewww so much sir❤

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Okay dear

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Superb

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Sir please tell me all your lectures on quantum mechanics covers syllabus of quantum mechanics of bsc final of rajasthan university ?????

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Dear these lecture are common

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Asalam o alikum sir i hope u will be fine sir plz tell me is their any fluid dynamic subject in your lecture scheme.

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Alikum o asalum dear Sorry dear I have no any videos for your topics

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U and walter lewin are my favourite teachers.

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Walter Lewin is also my favorite He is incomparable

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Very nice teaching 👍

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@@SANJUPHYSICS While watching your lectures of Quantum Mechanics, I felt like you were in front of me. I would like to express huge love from the bottom of my heart. Thank you for your time and effort.

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Sir please suggest quantum mechanics book sir plzzzzzzz

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Please send me your syllabus 9729446786

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Very nice sir

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God bless u sr u r a grt teacher

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Thanks dear

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Dear I am just a student of PHYSICS

[@maruakter8805]

plz, somebody help me, spread of the gaussian wave packet with time.i don't understand it.plz help me. advance thanks

[@ashishkumarsharma1323]

Tried reading book?

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thanku sir

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Can u make a vedio on quantum dot and quantum scattering

[@tilakchandprasad2888]

Very clearity

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Thanks dear