![For the Love of Physics](/img/default-banner.jpg)
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For the Love of Physics
India
Приєднався 14 вер 2016
Hi, I am Dibyajyoti Das. My friends call me DJ (i know right :D), my students - DJ Sir, Dibya Sir, and colleagues - Mr. Das. (I am giving you these options, since I know you will have difficulty with my name - story of my life)
So, this is my YT channel. I love Physics, as you can tell, and this channel is devoted to everyone who loves this beautiful subject. I did my Masters in Physics from Indian Institute of Technology Kanpur (IITK), and then taught as Asst. Professor at HRC, Delhi University for 10 years (2013-2022). Currently I am the Director of Elevate Classes/ ElevateX
I hardly reply to mails and chats (one of my many demerits). Not because I don't want to connect with you, but because I am too self-absorbed most of the time. So, apologies in advance.
Thank you for reading all that. May God bless you all ! Take care :)
So, this is my YT channel. I love Physics, as you can tell, and this channel is devoted to everyone who loves this beautiful subject. I did my Masters in Physics from Indian Institute of Technology Kanpur (IITK), and then taught as Asst. Professor at HRC, Delhi University for 10 years (2013-2022). Currently I am the Director of Elevate Classes/ ElevateX
I hardly reply to mails and chats (one of my many demerits). Not because I don't want to connect with you, but because I am too self-absorbed most of the time. So, apologies in advance.
Thank you for reading all that. May God bless you all ! Take care :)
Problem Solving in QM - Part II (Quick Revision for Competitive Exams)
Solve these 8 Questions in Quantum Mechanics from the various topics of - VALID WAVEFUNCTIONS, NORMALISATION, PROBABILITY, SCHRODINGER’S EQUATION, EXPECTATION VALUES 2Q etc
𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬
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Find all details here:
Website ► www.elevateclasses.in/
Android ► bit.ly/3zU71ur
iOS ► apple.co/3ZPRWVJ (use ORG code - AHGXS)
𓏬𓏬𓏬𓏬𓏬LEC NOTES - GDRIVE𓏬𓏬𓏬𓏬𓏬
Find the PDF Scanned copy of my NOTES for this lecture here:
𓏬𓏬𓏬𓏬𓏬VIDEO DESCRIPTION𓏬𓏬𓏬𓏬𓏬𓏬
In this lecture we go deep into the Problem solving aspect of various topics in Origins of QM. As a student you can go along and try to solve these questions yourself, and cross check the answers with mine.
00:00 Introduction
02:45 Q1 - Wavefunction
07:22 Q2 - Wavefunction
15:40 Q3 - Normalization
21:27 Q4 - Probability
25:11 Q5 - Probability
30:28 Q6 - Expectation Value
35:37 Q7 - Expectation Values & Uncertainty
46:15 Q8 - Schrodinger's Equation
𓏬𓏬𓏬𓏬𓏬𓏬TELEGRAM𓏬𓏬𓏬𓏬𓏬𓏬
Join my Telegram Channel ► t.me/FortheLoveofPhysicsYT
𓏬𓏬𓏬𓏬𓏬SUPPORT CHANNEL𓏬𓏬𓏬𓏬𓏬
Your Financial support provides me an additional incentive to create high quality lecture videos. I am very much thankful for your generosity and kindness
Support/ Patreon ❤️❤️❤️www.patreon.com/dibyajyotidas
Donate/ Paypal 🔥🔥🔥 paypal.me/FortheLoveofPhysics
JOIN MEMBERSHIP in UA-cam 😇😇😇
ua-cam.com/channels/OfLm6gZGt3vwTMKRg-irhg.htmljoin
𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬
Upcoming Batch: Physics IIT-JAM 2025, TIFR & JEST Batch starting JUNE 22
Upcoming Batch: CSIR-NET DEC 2024 & GATE-2025 Batch starting JUNE 30
Find all details here:
Website ► www.elevateclasses.in/
Android ► bit.ly/3zU71ur
iOS ► apple.co/3ZPRWVJ (use ORG code - AHGXS)
𓏬𓏬𓏬𓏬𓏬LEC NOTES - GDRIVE𓏬𓏬𓏬𓏬𓏬
Find the PDF Scanned copy of my NOTES for this lecture here:
𓏬𓏬𓏬𓏬𓏬VIDEO DESCRIPTION𓏬𓏬𓏬𓏬𓏬𓏬
In this lecture we go deep into the Problem solving aspect of various topics in Origins of QM. As a student you can go along and try to solve these questions yourself, and cross check the answers with mine.
00:00 Introduction
02:45 Q1 - Wavefunction
07:22 Q2 - Wavefunction
15:40 Q3 - Normalization
21:27 Q4 - Probability
25:11 Q5 - Probability
30:28 Q6 - Expectation Value
35:37 Q7 - Expectation Values & Uncertainty
46:15 Q8 - Schrodinger's Equation
𓏬𓏬𓏬𓏬𓏬𓏬TELEGRAM𓏬𓏬𓏬𓏬𓏬𓏬
Join my Telegram Channel ► t.me/FortheLoveofPhysicsYT
𓏬𓏬𓏬𓏬𓏬SUPPORT CHANNEL𓏬𓏬𓏬𓏬𓏬
Your Financial support provides me an additional incentive to create high quality lecture videos. I am very much thankful for your generosity and kindness
Support/ Patreon ❤️❤️❤️www.patreon.com/dibyajyotidas
Donate/ Paypal 🔥🔥🔥 paypal.me/FortheLoveofPhysics
JOIN MEMBERSHIP in UA-cam 😇😇😇
ua-cam.com/channels/OfLm6gZGt3vwTMKRg-irhg.htmljoin
Переглядів: 1 154
Відео
Course Launch at Elevate Classes | Physics IITJAM-2025, CSIR-NET DEC-2024 & GATE-2025
Переглядів 82314 годин тому
𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬 Upcoming Batch: Physics IIT-JAM 2025, TIFR & JEST Batch starting JUNE 22 Upcoming Batch: CSIR-NET DEC 2024 & GATE-2025 Batch starting JUNE 30 Find all details here: Website ► www.elevateclasses.in/ Android ► bit.ly/3zU71ur iOS ► apple.co/3ZPRWVJ (use ORG code - AHGXS) Details of JAM BATCH: www.elevateclasses.in/IIT-JAM-Physics/Masterclass.html Details of NET Batch: www...
Problem Solving in QM - Part I (Quick Revision for Competitive Exams)
Переглядів 1,9 тис.День тому
Solve these 10 Questions in Quantum Mechanics from the various topics of - BLACKBODY RADIATION, PHOTOELECTRIC EFFECT, COMPTON EFFECT, DE-BROGLIE HYPOTHESIS, WAVE-PACKET GP/PH VELOCITIES, UNCERTAINTY PRINCIPLE, ATOMIC STRUCTURE etc 𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬 Upcoming Batch: Physics IIT-JAM 2025, TIFR & JEST Batch starting JUNE 22 Upcoming Batch: CSIR-NET DEC 2024 & GATE-2025 Batch starting JUNE 3...
Wave Function in Momentum Space
Переглядів 1,9 тис.День тому
What is the representation of Wave function in Momentum space, and the corresponding probability densities and expectation values? 𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬 Upcoming Batch: Physics IIT-JAM 2025, TIFR & JEST Batch starting JUNE 22 Upcoming Batch: CSIR-NET DEC 2024 & GATE-2025 Batch starting JUNE 30 Find all details here: Website ► www.elevateclasses.in/ Android ► bit.ly/3zU71ur iOS ► apple.co/3Z...
Probability Current
Переглядів 3 тис.Місяць тому
What is Probability Current and it's Continuity Equation in Quantum Mechanics is what I discuss in this video lecture. 𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬 Browse LIVE & Recorded Courses for Physics IITJAM, CSIR-NET, GATE, TIFR, JEST etc on our platform ► www.elevateclasses.in/ Android ► bit.ly/3zU71ur iOS ► apple.co/3ZPRWVJ (use ORG code - AHGXS) 𓏬𓏬𓏬𓏬𓏬LEC NOTES - GDRIVE𓏬𓏬𓏬𓏬𓏬 Find the PDF Scanned copy of ...
EHRENFEST THEOREM | The BRIDGE between Quantum & Classical Physics
Переглядів 8 тис.5 місяців тому
What is the connection between Quantum & Classical Physics? Under what circumstances do the Schrodinger Equation give us the Newton's Laws? This is what we discuss in today's lecture - The Ehrenfest Theorem 𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬 Browse LIVE & Recorded Courses for Physics IITJAM, CSIR-NET, GATE, TIFR, JEST etc on our platform ► www.elevateclasses.in/ Android ► bit.ly/3zU71ur iOS ► apple.co/3...
Expectation Values of Position & Momentum | Basics of Probability Theory | OPERATORS
Переглядів 11 тис.5 місяців тому
What are Operators in Quantum mechanics? What is the Expectation value of Position, Momentum, Kinetic Energy, Total Energy etc? This is what we discuss in today's lecture. 𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬 Browse LIVE & Recorded Courses for Physics IITJAM, CSIR-NET, GATE, TIFR, JEST etc on our platform ► www.elevateclasses.in/ Android ► bit.ly/3zU71ur iOS ► apple.co/3ZPRWVJ (use ORG code - AHGXS) 𓏬𓏬𓏬𓏬𓏬...
Wavefunction & Normalization EXPLAINED
Переглядів 13 тис.5 місяців тому
What is a wavefunction in Quantum Mechanics? Does it have a physical significance? How do we know whether a given wavefunction is physically acceptable or not? Let's discuss all these questions in today's lecture. 𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬 Browse LIVE & Recorded Courses for Physics IITJAM, CSIR-NET, GATE, TIFR, JEST etc on our platform ► www.elevateclasses.in/ Android ► bit.ly/3zU71ur iOS ► app...
Born's Statistical (Probabilistic) Interpretation of Quantum Mechanics
Переглядів 9 тис.5 місяців тому
Born's Statistical Interpretation, a fundamental concept in quantum mechanics, states that the square of the wave function's magnitude at any point gives the probability density of finding a particle at that point. 𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬 Browse LIVE & Recorded Courses for Physics IITJAM, CSIR-NET, GATE, TIFR, JEST etc on our platform ► www.elevateclasses.in/ Android ► bit.ly/3zU71ur iOS ► ap...
SCHRÖDINGER'S EQUATION (Derivation) - Plausibility Argument & Time-Independent SE Derivation
Переглядів 21 тис.5 місяців тому
What is the Schrodinger Equation? Can we Derive it? What is it's role in Quantum mechanics? 𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬 Browse LIVE & Recorded Courses for Physics IITJAM, CSIR-NET, GATE, TIFR, JEST etc on our platform ► www.elevateclasses.in/ Android ► bit.ly/3zU71ur iOS ► apple.co/3ZPRWVJ (use ORG code - AHGXS) 𓏬𓏬𓏬𓏬𓏬LEC NOTES - GDRIVE𓏬𓏬𓏬𓏬𓏬 Find the PDF Scanned copy of my NOTES for this lecture h...
Laser Physics - Stimulated Emission & Einstein Coefficients | Three Level Laser
Переглядів 9 тис.6 місяців тому
What is the Physics behind light amplification via lasers? Lasers are synonymous with technology, but is based on a simple concept of Physics called Stimulated Emission. 𓏬𓏬𓏬𓏬𓏬ELEVATE CLASSES𓏬𓏬𓏬𓏬𓏬 Browse LIVE & Recorded Courses for Physics IITJAM, CSIR-NET, GATE, TIFR, JEST etc on our platform ► www.elevateclasses.in/ Android ► bit.ly/3zU71ur iOS ► apple.co/3ZPRWVJ (use ORG code - AHGXS) 𓏬𓏬𓏬𓏬𓏬LE...
Spectral Series & Atomic Transitions Explained | Success of Bohr Model
Переглядів 6 тис.7 місяців тому
Energy levels in an atom are quantized, and electrons can only exist in specific energy states. So, when electrons transition between these states, they emit or absorb energy in discrete amounts, leading to the observed discrete emission or absorption lines in the spectrum. In this video I discuss the spectral series of the Hydrogen Atom, namely Lyman, Balmer, Paschen, Brackett and Pfund Series...
Structure of Atom | Bohr Model - Energy & Radius Calculations | e-Wave Quantization
Переглядів 9 тис.8 місяців тому
What is the Structure of Atom? Let's understand the various Atomic models and how they came about, starting from Thomson Model, to Rutherford Model, and the Bohr Model of Atom. 𓏬𓏬𓏬𓏬𓏬𓏬𓏬ELEVATE𓏬𓏬𓏬𓏬𓏬𓏬𓏬 *Elevate Classes* - Find LIVE Batches & Recorded Courses for Physics IITJAM, CSIR-NET, GATE, TIFR, JEST etc on our platform Website► www.elevateclasses.in/ Android App► bit.ly/3zU71ur iOS App► apple...
Zero Point Energy | Virtual Particles | Bohr Radius | Spectral Width | Nuclear Electron
Переглядів 9 тис.8 місяців тому
Zero Point Energy | Virtual Particles | Bohr Radius | Spectral Width | Nuclear Electron
What is Uncertainty Principle? Wave Packet Approach - Fourier Transforms of Position/Momentum space
Переглядів 19 тис.8 місяців тому
What is Uncertainty Principle? Wave Packet Approach - Fourier Transforms of Position/Momentum space
Group & Phase Velocities of Wave packet in Quantum Mechanics
Переглядів 20 тис.9 місяців тому
Group & Phase Velocities of Wave packet in Quantum Mechanics
What is a Wave Packet in Quantum Mechanics?
Переглядів 24 тис.9 місяців тому
What is a Wave Packet in Quantum Mechanics?
Double Slit Experiment & 5 MIND BLOWING Predictions about Quantum Mechanics
Переглядів 19 тис.11 місяців тому
Double Slit Experiment & 5 MIND BLOWING Predictions about Quantum Mechanics
Davisson-Germer Experiment & Wave-Particle Duality
Переглядів 23 тис.11 місяців тому
Davisson-Germer Experiment & Wave-Particle Duality
De Broglie Hypothesis & Matter Waves | The Dual Nature of Matter & Radiation
Переглядів 22 тис.Рік тому
De Broglie Hypothesis & Matter Waves | The Dual Nature of Matter & Radiation
Something from Nothing: Pair Production & Pair Annihilation
Переглядів 26 тис.Рік тому
Something from Nothing: Pair Production & Pair Annihilation
Compton Effect Reveals the True Nature of Light | Derivation of Compton Equation
Переглядів 39 тис.Рік тому
Compton Effect Reveals the True Nature of Light | Derivation of Compton Equation
The Photoelectric Effect shows the Dual nature of light | What is a Photon?
Переглядів 27 тис.Рік тому
The Photoelectric Effect shows the Dual nature of light | What is a Photon?
Understanding Ultraviolet Catastrophe & Planck Postulate | The Birth of Quantum Mechanics
Переглядів 21 тис.Рік тому
Understanding Ultraviolet Catastrophe & Planck Postulate | The Birth of Quantum Mechanics
Planck Theory of Blackbody Radiation - Only Resolution to Ultraviolet Catastrophe! (DERIVATION)
Переглядів 27 тис.Рік тому
Planck Theory of Blackbody Radiation - Only Resolution to Ultraviolet Catastrophe! (DERIVATION)
Rayleigh Jeans Law & The Failure of Classical Physics
Переглядів 45 тис.Рік тому
Rayleigh Jeans Law & The Failure of Classical Physics
Blackbody Radiation Part 1 - Experimental Observations: Stefan Law, Wiens Displacement Law
Переглядів 66 тис.Рік тому
Blackbody Radiation Part 1 - Experimental Observations: Stefan Law, Wiens Displacement Law
WHAT IS LIGHT? Welcome to the Classical Era of Physics!
Переглядів 30 тис.Рік тому
WHAT IS LIGHT? Welcome to the Classical Era of Physics!
Quantum Mechanics - Book Recommendations 📖📒
Переглядів 82 тис.Рік тому
Quantum Mechanics - Book Recommendations 📖📒
Lecture Series on Quantum Mechanics - Beginner to Advanced | Complete Syllabus 💯
Переглядів 57 тис.Рік тому
Lecture Series on Quantum Mechanics - Beginner to Advanced | Complete Syllabus 💯
Thanks sir ❤
I really like the explanations. But UA-cam is exaggerating the amount of ads in the middle of the video. In 13 minutes of video, 4 ads appeared!!!
In my nuclear physics oral exam I was asked about this experiment, and I answered using the explanation given in this video. My teachers said that it's really difficult to explain it in a clear and concise way, but I did it. Thank you very much
Also explains in hindi for interest
Profound
the best video, ever!!!
Lot of respect from Pakistan sir
Sir solve more nad more problems from different exam and mit University of America. As we got theory from different sources but not having any book or material on problems and without the same we are felling zero
I don't see any one in this world like this teacher He is very clear and not miss any thing about the portion
Technoblabble.
Thank you sir
Thank you very much!!! It was very clear
Probably my first and only comment on any video. This video shows one of the most complex and difficult equation in such a manner that no other teacher has been able to show me till now. Really great video sir Thank you so much
😅🎉 I subscribed. I love this topic.❤ 👍
Sir can you suggest some books on nuclear physics, for the Quantum physics I am referring Arthur Beiser. I am currently in 4th semister.
after one year i tried your first projectile question the answer by gpt is right
0:28 0:31 0:31
You are so generous❤❤❤❤ sir, please help us with your valuable time with lecture. ❤❤❤😊😊
Please do more of these
@8:30 Says wave cannot be measured. He should go back to school? Seems awfully confused since we are always defining wave lengths of different photons. A "wave packet" he so loves is just a SINGLE Comlete wave. that is all.
This video is a wonderful exposition of how the neutrino problem indicates new physics. Larson's Reciprocal System postulates the three neutrino flavours as follows: The neutrino triple notation shows that the uncharged neutrino consist of both a magnetic and electric rotation and that collisions give these rotations a charge or rotational vibration. The magnetic charge is two dimensional and therefore takes 720% to complete compared to the electric vibration which is one dimensional and takes 360 degrees to complete. Larson explains that the uncharged neutrino is massless (because it has zero net displacement) and is carried by the progression as a form of radiation, but acquires mass from the magnetic charge which causes it to become trapped inside an atom whereby it imparts its magnetic charge to the atom as one unit of vibrational mass.
No particle spins on its own axis, physically. It's a misinterpretation in textbooks to distinguish between orbital angular momentum. It should have been intrinsic angular momentum. Its nice you have explained it
Even students like me can understand physics if we get teachers like you i never understand anything in physics but your way of teaching is so amazing that it feels like even i can do that❤
Thank you enjoyed solving the questions.......I applied the concepts correctly but did some calculation mistakes
I really need to appreciate your sincereness to the people who follow you. Thanks for another masterpiece!
Very nice explanations!
Helllllooo thank you so much can we have part 3 before my exam on 25th pleaseeee? 😅
Outstanding , thank you.
Sir you teach verry well but I don't understand anything 😢
Please also make some lectures on hatree-fock and density functional theory
You are the best!!!!
An example of how a great teacher teaches. Real life examples, stories, theoretical and experimental ideas and methods, taught by passion.
Well done task
Unfortunately, in general, neither symmetric nor ant-isymmetric wavefunctions can be said to be eigenfunctions of the Hamiltonian. The wave function for an electron in a hydrogen-like atom with atomic number Z in the ground state is RZ(r)=2(Z/a0)^(3/2)*exp(-Zr/a0). RZ(r) is an eigenfunction of HZ=1/(2m)*p^2-Ze^2/(4πε0r). But RZ(r) is not an eigenfunction of HZ'=1/(2m)*p^2-Z'e^2/(4πε0r), Z'≠Z. Let us consider the case where a hydrogen-type atom with atomic number Z and a hydrogen-type atom with atomic number Z' are sufficiently separated from each other. And each electron in each atom is in the ground state. The anti-symmetric wave function Ψ={RZ(r1)RZ'(r2)-RZ(r2)RZ'(r1)}/2^(1/2) is not an eigenfunction of the Hamiltonian H=1/(2m)*p1^2-Ze^2/(4πε0r1)+1/(2m)*p2^2-Z'e^2/(4πε0r2). It should be an ironclad rule of quantum mechanics that the wave function is an eigenfunction of the Hamiltonian.
Sir I am quite confident about your teaching capabilities being a regular watcher of your videos in our channel "For the love of physics" but I don't know anything about other teachers and their teaching skill therefore is there anyway to get a few of their demo classes
Recorded Demo lectures are available here: www.elevateclasses.in/demo.html#demo For Live Demo lectures, kindly register on our website to get access to the first week of free lectures
In 6 month how to crack this exam this is not funny😮,
If u are already familiar with 70% of the syllabus via University, then fully dedicated preparation of 6 months is more than sufficient for these exams
Mind blowing stuff. Keep up the good work.
Thanku so much sir
wonderful explanation sir thank you
Great
Excellent!
Sir I'm from Pakistan and I want to buy your courses but unable to get this because your app is not available in my country. I will make payment to your bank account from Dubai through my friend who is living there in Dubai. How can I access your lecture please must reply
Hi students, if you are in college/university and preparing for various competitive exams in India, we are launching two new LIVE Batches in the coming weeks, at Elevate. This post is for those interested in the same. If you know anyone who might be interested also, kindly forward. Many thanks :) For students who are preparing for Physics IIT-JAM 2025, TIFR, JEST, CUET-PG and similar Exams, we have our Physics IITJAM 2025 Masterclass, STARTING JUNE 22. You can explore all it's details here: www.elevateclasses.in/IIT-JAM-Physics/Masterclass.html For students who are preparing for CSIR-NET Physical Sciences, GATE, BARC, JEST Physics (for PhD entrances) and similar Exams, we have our CSIR-NET DEC-2024 & GATE PHYSICS 2025 Masterclass, STARTING JUNE 30. You can explore all it's details here: www.elevateclasses.in/NET-GATE-Physics/Masterclass.html These are all Live Interactive Classes, conducted by 5-6 highly qualified teachers (I will personally teach Mechanics + QM) with Recorded access, Test Series etc. There's a 5% EARLYBIRD Offer before classes start. Upon registration, I have given FREE access to first week Live lectures. So, if this is something you are interested in, you can Explore all the details and fill the Registration form at: Website ► www.elevateclasses.in/ You can also check us out in your APP Android ► bit.ly/3zU71ur iOS ► apple.co/3ZPRWVJ (use ORG code - AHGXS)
Is this class available in English medium sir?
I would like to know that as well!
English + Hindi You can drop a Whatsapp at 9311757559, and request for demo. Demo will help in getting an idea about the medium.
Sir tell me about fees pls 😊
Fabulous sir ❤❤❤❤....
Thankyou so much sir I love the lecture . Thankyou sir 🙏