In my opinion you are the best teacher of physics...I have watched so many videos for understanding quantum mechanics but your lecture is best... trust me..best.
Planck's approach was to analyze the entropy of blackbody radiation as a function of energy. To make both high-frequency and low-frequency data consistent with the Second Law of Thermodynamics, he included an additional "guess" term proportional to the frequency (hf); this results in Planck's Law. Planck's application of Boltzmann's Statistical Mechanics to justify his guess then led to his conclusion that the material of the walls emit and absorb radiation in discrete quanta. A paper titled "Planck’s Route to the Black Body Radiation Formula and Quantization" by Michael Fowler (7/25/08) gives a nice discussion.
This video is really wonderful. The derivation you have done is really amazing i never forget it anyway it is very clear and waiting for your next ones. Clear detailed information and derivation.❤️❤️❤️
Actually, Planck called h the “hope” constant, in the hope that he would return twitter to correct it. It was an escape he used. Extremely useful presentation, my friend.
The video was flawless, precise and mathematically revealing. But just one request to upload a video explaining all the physics behind this mathematics, like why did Planck assume that emission and absorption to be quantized? And the physical meaning behind probability of energy distribution that was used in the derivation.
love the fact that you go over the derivation, most textbooks just give the formula and leave it at that :-) one point: for the binomial expansion to converge don't we need -1 < x < 1? x >0 should be straightforward to see but how do we know x
I am in class 11. The way you are teaching quantum physics is mesmerising. I like your way of explaining the theories, derivations. I am learning so much new things. Thank you for coming with this series.
Using monochrome leds calculating the voltage and and evaluating it with the value of energy and as the leds are monochromatic we just need to put the values of lambda and c and E , then by E=hc/lambda => h=E×lambda/c
of all the videos I watched on youtube. is you that made this lesson clear and easy for me wow, wow God really bless you for helping me to pass my exam
.. I had watched many videos about this phenomenon (BLACK BODY RADIATION) what was confusing me is how they construct the curve for each certain temperature.... Then I understand that they heat the matter for e. g to 3000 K the body will glow (emit visible light +IR&UV ray) then they will pass this light through glassy prism which will analyse it into the spectrum including visible colors +IR&UV... Then they measure the intensity of each part of the spectrum (starting from IR...then visible light colors ended by UV) Plot wave length (horizontal) & intensity longitudinal THANKS & SORRY FOR THE BAD ENGLISH I USED
First of all, THANK YOU for taking the time to create this content; it is MOST helpful and you are a superb math/science communicator & teacher. I have a fundamental question please: at 10' 12" in the video, when you begin substituting in zero & positive integer values, why did Plank regard this as permissible? Why not non-integers? What stops us assuming 'n' equals root 2 or Pi? Or even a negative integer? Was it that he discovered this by trial & error and found that this (0, 1, 2, 3....) assumption just happened to output the values that agreed with the blackbody spectrum, or did he have something more fundamental in mind? Thank you sir.
I am a beginner in quantum mechanics and I am just satisfying my boredom. I get the derivations so far, it all makes sense mathematically. I just dont exactly know where e^-En/kT comes from, if anyone could help me with this I would greatly appreciate it.
I disagree. Rayleigh and Jeans were correct in saying that any amount of energy could be exchanged between radiation and matter. However, they were wrong in their assumption that the radiation subsequently emitted by matter would likewise tend toward waves of shorter and shorter wavelength. I can understand their point because waves of higher frequency have a greater number of modes, so it is logical to assume that there are more standing waves as frequency increases. The equation they posited, however, was and is wrong. The radiation subsequently emitted by matter is emitted in quanta consistent with the energy orbitals within the atom''s structure. Rayleigh and Jeans knew nothing about atomic structure including orbitals and the quantum leaps necessary to both elevate and lower the electron among the orbitals, so it is reasonable that they did not posit an accurate model of reality. Furthermore, a standing wave emitted by an atom after receiving a sufficient amount of EM radiation is discrete insofar as it elevates to a higher orbital and then drops to its original orbital.
The electromagnetic wave is the harmonic oscillator. This video explains the Raleigh-Jeans Law, which was a failed attempt to do what Planck did. th-cam.com/video/rCfPQLVzus4/w-d-xo.html
You have done this on a volume basis which is not very useful On an emitting area basis Plancks law is Intensity =2pi h c^2 / lamda^5 * 1/ (e^hc/ktlamda -1) which is much different than yours.
this is the ONLY video that showed how to derive Plank's law...the rest jump over the critical pieces what is amazing.. that Plank postulated..he was guessing... he was frustrated... and found by accident a formula that just fitted the experimental data in other words..it was a hack which he hated but that was the best he can do🤲 however..it was Elbert Einstein who put it all together. Initially.. Plank rejected his conclusion what is funny.. that even Elbert himself.. didn't believe in quantum mechanics (which he discovered) since it entailed quantum entanglement which he called spoky🤣 he died fighting the idea
Your classes are the best. The way you teach physics , in a easy way is really appreciable.........
That's so good to hear. Thank you 😊
Your videos are really legendary to enhance the spectra of my learning and spark the flame of curiousity within my spirit
Ur vocabulary is legendary
In my opinion you are the best teacher of physics...I have watched so many videos for understanding quantum mechanics but your lecture is best... trust me..best.
You’re doing the great job, thank you so much for this knowledge, I’ll never miss your video again :)
Planck's approach was to analyze the entropy of blackbody radiation as a function of energy. To make both high-frequency and low-frequency data consistent with the Second Law of Thermodynamics, he included an additional "guess" term proportional to the frequency (hf); this results in Planck's Law. Planck's application of Boltzmann's Statistical Mechanics to justify his guess then led to his conclusion that the material of the walls emit and absorb radiation in discrete quanta.
A paper titled "Planck’s Route to the Black Body Radiation Formula and Quantization" by Michael Fowler (7/25/08) gives a nice discussion.
Thank you for including and explaining every step. I was able to follow all to the end.
Your explanation is making everything so simple. I'm loving it..👍😍
This video is really wonderful. The derivation you have done is really amazing i never forget it anyway it is very clear and waiting for your next ones. Clear detailed information and derivation.❤️❤️❤️
Actually, Planck called h the “hope” constant, in the hope that he would return twitter to correct it. It was an escape he used. Extremely useful presentation, my friend.
The video was flawless, precise and mathematically revealing. But just one request to upload a video explaining all the physics behind this mathematics, like why did Planck assume that emission and absorption to be quantized? And the physical meaning behind probability of energy distribution that was used in the derivation.
love the fact that you go over the derivation, most textbooks just give the formula and leave it at that :-) one point: for the binomial expansion to converge don't we need -1 < x < 1? x >0 should be straightforward to see but how do we know x
I Like mathematics so much and i am so interested in physics also. And quantum mechanics is combination of both .
I like this series so much.
I am in class 11. The way you are teaching quantum physics is mesmerising. I like your way of explaining the theories, derivations. I am learning so much new things. Thank you for coming with this series.
Thank you sir,i have been looking for this video to clear my doubts.
Bro you are superb and I will be respectful for your work and your efficiency keep going ...
Simplifying the equation in such a simple is great. Nice one....
👍
Loved it..
How was the value of plank's constant calculated??
Using monochrome leds calculating the voltage and and evaluating it with the value of energy and as the leds are monochromatic we just need to put the values of lambda and c and E , then by E=hc/lambda => h=E×lambda/c
Photoelectric Effect experiment
Amazing job, sir. You did an excellent performance❤👍👍
Good job done🙏, your video has cut down the time I would have spent to figure things out from my lecture notes. I 💚 it.
Because of you I understand this today...keep moving forward sir
Outstanding! A supremely clear derivation.
I'm a beginner on Quantum Mechanics but I could follow 'til the end. Thanks for all the detailed explanation. Greetings from Sao Paulo, Brazil
Glad it was helpful!
For the binomial expansion, if you substitute x=2, you get right side equals 1 and left side infinity. Why?
of all the videos I watched on youtube. is you that made this lesson clear and easy for me wow, wow God really bless you for helping me to pass my exam
I am waiting for your video you are awesome in explaning quantum mechanics love you sir😘♥️❤️❤️♥️
thank you, sir. please don't stop posting
This video was so useful for me.
I appreciate you.🙏🏻
Thank you so much Sir! ❤❤
Wonderful video .Really loved it.
.. I had watched many videos about this phenomenon (BLACK BODY RADIATION)
what was confusing me is how they construct the curve for each certain temperature.... Then I understand that they heat the matter for e. g to 3000 K the body will glow (emit visible light +IR&UV ray) then they will pass this light through glassy prism which will analyse it into the spectrum including visible colors +IR&UV... Then they measure the intensity of each part of the spectrum (starting from IR...then visible light colors ended by UV)
Plot wave length (horizontal) & intensity longitudinal
THANKS & SORRY FOR THE BAD ENGLISH I USED
Excellent video and very well broken down so I could follow it. Thanks
Yayieee new video ❤️
I'm from egypt and i sport you , continue
Good explanation about planck's theory 👏
First of all, THANK YOU for taking the time to create this content; it is MOST helpful and you are a superb math/science communicator & teacher. I have a fundamental question please: at 10' 12" in the video, when you begin substituting in zero & positive integer values, why did Plank regard this as permissible? Why not non-integers? What stops us assuming 'n' equals root 2 or Pi? Or even a negative integer? Was it that he discovered this by trial & error and found that this (0, 1, 2, 3....) assumption just happened to output the values that agreed with the blackbody spectrum, or did he have something more fundamental in mind? Thank you sir.
n is for no. of waves so it cant be -ve irr etc
Excellent materials.
Really enjoyable. Thanks. Very clearly explained.
Dislikes from nothing understanded guys keep going bro always in support for your rise
Outstanding!!!
Thankuuu. Very simple and understandable😁
This video helps me a lot! Thank you
Thank you so much ❤❤❤
Where can I find how the equation for the number of modes per unit volume inside the cavity is derived?
I am a beginner in quantum mechanics and I am just satisfying my boredom. I get the derivations so far, it all makes sense mathematically. I just dont exactly know where e^-En/kT comes from, if anyone could help me with this I would greatly appreciate it.
Please another videos discuss spacetime and spacetime intervals
Why did you multiply energy with probability
Omg...I really understood
Thank you sir
Handsome & smart teacher. 🙏
Dude, keep it up Bhai 🙏♥️
Thank you Pradeep ❤
Tq so much sir for making this helpful video 🙏
Very good thanks
really good video. thank you !!!!!!!!!!
you are a legend thank you
awesome channel ...
Planck proposed it before Rayleigh-Jean
Fantastic Stuff !
that was pure genius!
I disagree. Rayleigh and Jeans were correct in saying that any amount of energy could be exchanged between radiation and matter. However, they were wrong in their assumption that the radiation subsequently emitted by matter would likewise tend toward waves of shorter and shorter wavelength. I can understand their point because waves of higher frequency have a greater number of modes, so it is logical to assume that there are more standing waves as frequency increases. The equation they posited, however, was and is wrong. The radiation subsequently emitted by matter is emitted in quanta consistent with the energy orbitals within the atom''s structure. Rayleigh and Jeans knew nothing about atomic structure including orbitals and the quantum leaps necessary to both elevate and lower the electron among the orbitals, so it is reasonable that they did not posit an accurate model of reality. Furthermore, a standing wave emitted by an atom after receiving a sufficient amount of EM radiation is discrete insofar as it elevates to a higher orbital and then drops to its original orbital.
How did u reach the conclusion e-En/kt
Wonderful explanation 👍👌
Glad you liked it
What is harmonic oscillator here?
Can anyone tell PLZZ
The electromagnetic wave is the harmonic oscillator. This video explains the Raleigh-Jeans Law, which was a failed attempt to do what Planck did. th-cam.com/video/rCfPQLVzus4/w-d-xo.html
Can you suggest some books for this topic?
I understood everything except the mathematical manipulation of binomial expansion ,
@5:44 you really left us hanging on that didn't you... really good apart from that tho (:
Sorry man, but 1+2x+3x^2+... = 1/(1-x)^2 makes no sense. Also where did you get that probability formula?
You have done this on a volume basis which is not very useful
On an emitting area basis Plancks law is Intensity =2pi h c^2 / lamda^5 * 1/ (e^hc/ktlamda -1)
which is much different than yours.
bhott acha padate ho sir app
Super 👌
Quantum for teleportation?
Perfect 😘👍
this is the ONLY video that showed how to derive Plank's law...the rest jump over the critical pieces
what is amazing.. that Plank postulated..he was guessing... he was frustrated... and found by accident a formula that just fitted the experimental data
in other words..it was a hack which he hated but that was the best he can do🤲
however..it was Elbert Einstein who put it all together. Initially.. Plank rejected his conclusion
what is funny.. that even Elbert himself.. didn't believe in quantum mechanics (which he discovered) since it entailed quantum entanglement which he called spoky🤣
he died fighting the idea
Hey
U didn't explain how you got that probability 😂
what is that n called
It’s a natural number (1,2,3...)
n is the no.of oscillators
You are god on earth