How the index of refraction arises, and why it depends on color (as seen with a prism)
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This video is largely based on the following Feynmann lecture
https://www.feynmanlectures.caltech.edu/I_31.html
Looking Glass Universe videos on the index of refraction:
https://youtu.be/uo3ds0FVpXs
The explanation for why the phase of a wave produced by a plane of oscillating charges is a quarter phase behind the wave of a charge in the center of that plane, and hence a quarter phase behind that of a light wave inducing the oscillations, is given in the previous chapter:
https://www.feynmanlectures.caltech.edu/I_30.html
Sections:
0:00 - The standard explanation
3:14 - The plan
5:09 - Phase kicks
8:25 - What causes light?
13:20 - Adding waves
16:40 - Modeling the charge oscillation
20:59 - The driven harmonic oscillator
26:57 - End notes
Thanks to these viewers for their contributions to translations
German: Ole
Hebrew: Alon Altman, Omer Tuchfeld
Hindi: Saurabh
Portuguese: @doryhelioaires
Urdu: Momini0
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https://github.com/3b1b/manim
https://github.com/ManimCommunity/manim/
All code for specific videos is visible here:
https://github.com/3b1b/videos/
The music is by Vincent Rubinetti.
https://www.vincentrubinetti.com
https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown
https://open.spotify.com/album/1dVyjwS8FBqXhRunaG5W5u
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