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by Ciro Santilli (@cirosantilli, 37)

Compton scattering (1923)

 Home Science Natural science Physics The most important physics experiments
 1 By others on same topic  0 Discussions  Updated 2025-05-23  +Created 1970-01-01  See my version
Tags: 1927 Nobel Prize in Physics
Classic theory predicts that the output frequency must be the same as the input one since the electromagnetic wave makes the electron vibrate with same frequency as itself, which then irradiates further waves.
But the output waves are longer because photons are discrete and energy is proportional to frequency:
The formula is exactly that of two relativistic billiard balls colliding.
Therefore this is evidence that photons exist and have momentum.
Video 1.
Compton Scattering by Compton Scattering (2017)
Source. Experiment with a caesium-137 source.
Video 2.
L3.3 Compton Scattering by Barton Zwiebach (2017)
Source.

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  • 1927 Nobel Prize in Physics
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  • Planck-Einstein relation

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 Articles by others on the same topic (1)

Compton scattering by Wikipedia Bot 0  1970-01-01
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