Let's talk about one of the most important laws of optics - the law of refraction of light. In school, we were taught that light tends to refract at the boundary of media, changing the angle of its propagation, because its speeds of propagation in different media are different. But why are these speeds different, and how exactly does matter affect the passage of light through it? We delve into this in our today's video!


00:00 Introduction
01:00 Refraction of Light. Refractive Index. Snell's Law
05:25 How does light affect matter?
11:55 Deriving the formula for refractive index through the laws of electrodynamics
12:55 Where does the dispersion of light come from?
14:53 Explaining the change in the speed of light in a medium through wave emission
19:30 What does it mean when the refractive index is less than 1?
21:35 Special Cases