Planck's Constant and BlackBody Radiation

This video provides a basic introduction into planck's constant and blackbody radiation. Planck's constant is very useful in calculating the energy of a photon given the frequency. This equation shows that energy is quantized. It is not continuous but can only exist in discrete values.

Ray Diagrams:

The Huygens Principle:

Young's Double Slit Experiment:

Single Slit Diffraction:

Diffraction Grating Problems:

Polarization of Light Problems:

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Brewster's Angle:

Planck's Constant and Blackbody Radiation:

Photon Momentum and Effective Mass:

Wien's Law:

Compton Effect & Wavelength:

Physics 2 Final Exam Review:

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Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

[maxkronader]

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Despite my degree, there are concepts I did not understand at a "gut level" until I saw your videos.

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[lkern]

You explain things so clearly. I feel bad I avoided physics in high school...

[gusmoose]

so good!!! I hope to see more of quantum mechanics from you

[avinashveanukavi]

I was waiting for this topic for a long time.... Thank you

[adrian.ts]

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[sunshinedaydream]

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[kabandajamir]

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[israelsadovnik]

Where does unit (h) come from?
To solve the blackbody problem, Max Planck introduced the quantum unit (h ), (h=Et ).
The element (h) did not exist in physics before.
The unit (h) does not come from formulas or equations.
Planck introduced h-unit from the "heaven".
Planck introduced the unit (h) intuitively, phenomenologically.
Planck introduced the quantum of action "without recourse to explanations,
metaphysical assumptions and traditional philosophical questions".
For many years, Planck tried to find a rational (classical) explanation
for his h-unit, but without success.
We don't know where the unit (h) came from

[socrat]

About the quantum of light
1- In the 19th century, much attention was paid to the study of the thermal properties of various objects. The idealized model that was considered was the Black Body. (Max von Laue called the black body the “Kirchhoff vacuum.” It was also called the “ultraviolet catastrophe”; the first signs of the “vacuum catastrophe”)
2- In 1900, Max Planck solved the “black body” problem by discovering the “quantum of action of light - h”. Particle (h) is not a hot particle emitted by stars. Particle (h) came from the vacuum, from the cosmic vacuum.
3- Einstein's second postulate states: In a vacuum, light propagates at a constant speed (c), which does not depend on the speed and radiation of the source or observer.
4. According to SRT, a quantum of light is not a solid particle.
5- According to quantum physics, a quantum of light has its own internal “spin” (linear or angular).
6- Light is an independent and free quantum particle. Its movement does not depend on the speed of the source or the observer. The actions of light do not depend on the opinions of physicists.
#
"All these fifty years of conscious brooding have brought me no nearer to the answer to the question "What are light quanta?". Nowadays every Tom, Dick, and Harry thinks he knows it, but he is mistaken." /Albert Einstein/

[nicolecusson]

Hi JG! my name is Nicole. There is something I did not quite understand about the photon. From what I understood it’s a energy carrier.But is it already present before the electrons start oscillating from one energy level to another or is it formed as the electrons oscillate from one energy level to another as for during their oscillation you mentioned that they absorb or emit some kind of energy? Thank you! 😊

[ihaveaboyfriendmeh]

But what exactly is Plank's constant?

[aleyyy]

Can I just ask what app is this where you write things with black background?

[dylantrost]

Even though n and h are constants, can’t frequency take any value? You imply that multiplying a continuous variable by a constant makes the result limited to a set of values, no?

[Buddha-Einstein]

IF YOU PUT THE FORMULA ASIDE, THEN WHAT IS THE INTUITIVE reason BEHIND the math so one can SEE the intensity going down on higher frequencies, I mean conceptually?

[velvialeekalvin]

Please be more specific in computing the energy as well as the 10 negative 34 and its meaning

[ChaimaDoctoresse-deft]

I need the playlist where this video is 😢

[jonlhetmarcalas]

Turn around, look at what you
Dustin didnt need to sing if you uploaded then, but anyways, Good video

[dienosorpo]

didnt hydrogen only had 1 level of energy??

information from differentes sources doesnt match up in any way. Khan academy says one thing, school says another, etc.