Explore the intricate relationship between prisms and springs in this 29-minute video from 3Blue1Brown. Delve into the origins of the index of refraction and its dependence on color through a series of optics puzzles. Examine concepts such as phase kicks, the nature of light, wave addition, charge oscillation modeling, and the driven harmonic oscillator. Gain a deeper understanding of how these principles contribute to the behavior of light in prisms, drawing from Feynman lectures and advanced physics concepts. Follow along with detailed animations and explanations that break down complex ideas into digestible segments, making this an invaluable resource for students and enthusiasts of optics and physics.