All this time I've been hating physics but I watched this video and was blown away. It all makes sense now. Thanks so much!!

Oh okay, I don't have to be confused about "why" because "why" isn't explained by Plank! what a relief

"Planck’s Route to the Black Body Radiation Formula and Quantization" by Michael Fowler details Planck's thermodynamic analysis of the entropy of Blackbody Radiation, which motivated his hypothesis to satisfy Wien's Law at high frequencies. Planck's application of Boltzmann's Statistical Mechanics led to his conclusion that the material of the walls emit and absorb radiation in discrete quanta. It's a great read.

The stair and slope example was brilliant! Thanks : D

Great explanation, subjects are easily understood when they don't depart from the context, it keeps the chain of thought connected and your attention continuous. Story-telling at it's finest.

Hi, working my way through some early universe cosmology and need to understand some basic concepts more clearly.....so this is perfect! Thanks for your generous time!

(2:28) Correction, you're getting the smaller wavelengths in the blue/violet region of the visible spectrum, not the "frequencies" like you said.

Thank you so much for keeping this topic to the basics so one can understand the central principal! Not one German video I saw did it as well as you did.

As always your videos are amazing. Thank you so much for creating them. This is perfectly clear, simple and very easy to understand.

Thank you so much for this. So grateful to all the teachers who give their time to make amazing videos like this

I spent so long trying to understand this topic but this video is so well explained. Thank you !!

I was having a hard time fully understanding this and now I get it! Thanks.

Honestly you are a saviour to my atar

It was too good... I really understood everything.... Thank you so much

Its is the best explanation I've found at the level of high school , congratulations teacher.

Brilliant!!!! Thank you very much!

Thank you truly for the great video. Taking a modern physics course this semester and the TA explained it poorly, appreciate the help!

Thank you very much! Beautifully explained.

This suddenly makes so much more sense!! Thank you soooooo soooo soooo much!!!!!

Wow, I’m actually learning and fascinated this time around. Thank you

I needed this thank you 🙏!

very well explained.. thank you.

awesome... sir, thank you :)

great video!!.....this video helps me to understand the planck's law.....other videos on youtube are just waste of time,,,,,,....

Very easy to understand presentation on an abstract topic

I finally understand this. Thanks.

Very good and clear presentation.

Thank you, clear and concise, the way I like it :)

loved it... seriously!!! got the point I was looking for ... thank you !!! 👌

first year studying physics at uni, really helpfull video!

Oh my god. I have watched a lot of videos, and This is just incredible.

Great! Thank you.❤️

Excellent! Thank you

Great video information 👍❤thank you for sharing your knowledge and experience 🇵🇭🫡

Am I missing something? As E = hf, more strictly speaking energy is only quantised for a particular emr frequency. As far as I'm aware, f is continuous??

thank you so much this is amazing

Very elegant explanation.

wow cool these videos are amazing

great and precise explanation! very greatful

Thank you very much.... I watched many videos to understand... (why we say U. V catastrophe) I thought that because of harmful EM radiotion (ionizing radiation) from U. V & and shorter frequencies.... BUT NOW I REALIZED BECAUSE IT BREAKS THE EXPECTATION OF THE CLASSICAL PHYSICS

You have no idea how thankful I am

Finally understood what a n body is. Thanks!

This must have seemed very odd to Planck and others then...it is such a strange concept...I enjoyed your explanation, thank you!

Thanks sir

I watched the video and enjoyed it.

Thank you :0)

THANK YOU

Bravo!

Very nice explanation Sir. I just started reading (for something like the 5th time) “Quantum” by M. Kumar, a fantastic book on many respects, and the first chapter is about the black body radiation problem, Wien’s solution and inherent problem and of course Plank mathematical solution. I was looking for Plank’s formula and I am so happy to have found it in the video. Now I’d like to understand how he got to that specific equation, which is quite complex. Oh, by the way, I subscribed to the channel! Cheers.

Great video sir. Your great explanation is what I need . Thank you.

thank you!

sir you are great

Thannnk yoouuuuuu 🌸

thank you for these videos. i wonder what interactive tool/software you used for displaying Wien's law. regards

Great explanation. Thanks :)

4:05 may i ask why does it go down? the red thing like raises up from the start but then goes back down

Very nice channel. But I have two remarks. First, Plank fitted the experimental data with his formula and then tried to explain it with thermodynamics and the necessary E = hf. Second: why everybody starts with Plank? 30 - 40 years ago spectroscopists supposed that the energy levels are discrete -- spectra are discrete. Also, the term black body is very confusing for a layman. BB is in thermodynamics equilibrium: it emits the same amount of energy that absorbs. Practically BB is not a black thing. As an IR spectroscopist (chemist, not physicist) I always wondered if the colour of BB is black as it is usually illustrated (by you too).

Where to find that spectrum calculator?

sir is it like the number of photons become constant after the max inetsity like in photoelectric effect?

but I'd have loved if u would have explained the derivation of the formula Planck used to predic nature of the wave

Thank you so much. Great explanation. Wonderful effort. Keep posting. Regards.

Instead of referring to the wavelengths involved in the UV "catastrophe" as "smaller" wavelengths - I recommend using "shorter" wavelengths.

I think the white line you drew on the ultraviolet catastrophe screen should show exponential growth, not exponential decay, though...

What kind of function is that graph? it's so weird I cannot understand it. How come there's 2 points in the y axis? usually, when you pick a value from the x axis it give only one value from the y axis, but how come the y axis is giving 2 values?

Black-body e-Pi anti node singularity vanishing-into-no-thing zero-infinity axial-tangential sync-duration orthogonality. Inside-outside holographic time-timing positioning by i-reflection containment.

sir you are greatt

How did he came up with that? I think he figured out that energy was quantized and to get the value he just tried smaller and smaller numbers until the equation matched up with the experimental data... Then just multiplies that constant by the frequency and there it is, such a simple but beautfil approach to solve the problem

It is not clear why introducing a quantized constant solves the 'catastrophe'. Thats the video I want to see! Thank you.

The association of the main numbers in mathematics reflect numerical sequences that correspond to the dimensions of the Earth, the Moon, and the Sun, in the unit of measurement in meters, which is 1" (second) / 299,792,458 m/s (speed of light in a vacuum). Planck's constant. Planck’s constant: 6.63 × 10-34 m2 kg. Circumference of the Moon: 10,916. Gold equation: 1,618 ɸ (((6.63 ^ (10,916 x 10^-4 )) x 1.618 x (10^3)= 12,756.82 Earth’s equatorial diameter: 12,756 km. Planck's temperature: 1.41679 x 10^32 Kelvin. Newton’s law of gravitation: G = 6.67 x 10^-11 N.m^2/kg^2. Speed of Sound: 340.29 m/s (1.41679 ^ 6.67) x 340.29 - 1 = 3,474.81 Moon's diameter:: 3,474 km. Frequencies of the Planets of the Solar System: • Mercury: 141.27 Hz; • Venus: 221.23 Hz; • Earth: 7.83 Hz; • Mars: 144.72 Hz; • Jupiter: 183.58 Hz; • Saturn: 147.85 Hz; • Uranus: 432 Hz; • Neptune: 211.44 Hz; • Planck constant: 6.63 × 10^-34 m2 kg. • ((141,27 + 221,23 + 7,83 + 144,72 +183,58 + 147,85 + 432 + 211,44) ^ 6,63) x (10^-17) = 10.916,17 Moon's circumference: 10,916 km. Orion: The Connection between Heaven and Earth eBook Kindle

How does this relate with radiated particle. Something radiated is slightly warm. But doesn't emediatelly show burns. Till later. & doesn't glow.

Nice video and presentation. Ty and Jean gave us a curve fitting solution is mathematics but science. On the other hand Planck offer a final curve fitting solution is also mathematics but science. The catastrophe came out of our ignorance, selective learning and inability of connecting dots so to speak. Essentially, at the time the instrument’s sensor was sealed inside a glass container and we all know that glass attenuates infrared and ultraviolet that masked off real response, in the end we saw a distorted view on page 8:30+. That means we still don’t know the real characteristics is until we have found a new material but glass to preserve the real information in the signal, light. We have PhD everywhere today but they offer us D and not Ph. Without philosophy science is soulless.

14:10 There should no pie in the numerator. Just pointing it out!

very applicable to glowing sphere

So are we saying that the Planck constant was utilized because we simply don't have a perfect radiator to experiment with to prove the classic model?

yes... we are electrical in nature.... (like EVERYTHING)

Thanks a million. Crystal clear explanation.

I heard that Einstein filled the hole of understanding the formula. Can atoms be seen? How are they measured? I like Buckminster Fullers General Systems Theory model, wherein the metaphysical must be considered. Physics cannot explain metaphysics because by its nature it is finite or limited. All good for material universe, but what about that which we don't see physically? Even the full spectrum of color (as well as phenomena)... Thank you for sharing your insights.

Excellent explanation thank you.

something you need to hear things from another teacher and it all falls into place, thank you!!!!

i didnt think Id be one of those people but this was posted on birthday lolol

im in graduate school haha the HIGH school physics explained makes me feel so dumb

At 6:41, it says that black bodies absorb radiation right? This has been boggling on my mind for a bit now, but what about a lightbulb filament that doesn't necessarily have to absorb electromagnetic radiation, and is counted for as a black body. The thing is, that it also reflects light, so how can this be a black body?

The incandescent light bulb is a Blackbody...how about the fluorescent light bulb is it also a Blackbidy ..if not then what is the reason? Tq !

Planck's Constan h = 6.626 × 10^-34 Js It's 10 raised to the power -34. And the analogy About Black Body was Awesome. It helped me better understand the concept about black Body. Thanks

What simulator did you use!?

hey if the filliment hot even hotter than white it would turn blue of violet right?

why the curve come down at ultraviolet ??

this helped me very much. i couldn't understand it in class that much but thanks to this i understood it!

How did planck tho explain it using one law?

Why does the curve go down at high frequencies? Even if it's quantized it shouldn't prevent high frequency radiation from being created.

I cannot thank you enough sir, a mystery solved to my weary mind

...yep - sometimes recognizing reality is an act of desperation...

I'm going to assume BlackBody Radiation pertains to the influences, radical influences, of having negative energy When, namely, energy surges, and discharges repeatedly(in waves).

Could you please cover the HSC topic from Quanta to Quarks, specifically wave-particle duality, and the Bohr atom. Thanks!

Me: searches the whole internet for an explanation about the formula Planck came up with Video: this is Planck's formula Me: FINALLY Video: but you don't have to understand it, it's not important!

What if we want to understand the formula? Doesn't it kind of seem like an ad-hoc explanation to try to explain why our perception of physics didn't meet experimental observable predictions, so we basically had to reify the atom, and invoke quanta packets of energy to math it out.

(James) Jeans is pronounced like the denim trousers not like French Jean

what about a ceramic plate?

Can coal be an example of black body?

You know what, I had been calling Eistein a thief who took Planck's work to call it photoelectric effect. Now when Planck himself says "an act of desperation" i don't understand this, when he got every thing to explain the quantum nature of light. You know what my problem is that i unable to differentiate between Planck's quanta and Einstein photon.