The hidden physics behind the spectrum of a rainbow
Most of us understand the basic science of rainbows, but the true mechanics of light refraction and polarization are often left out of the classroom. This video explores the complex optical phenomena that dictate how light behaves when moving through water droplets.
The video delves into the intricate details of how light interacts with different mediums. It examines the behavior of light as it moves between materials with varying indices of refraction, specifically looking at how light is both reflected and transmitted.
A key focus is the nuance of polarization. While some animations might suggest only parallel polarization is transmitted, the reality is more complex: both parallel and perpendicular polarization are transmitted during the process. The exploration also touches upon the absence of Brewster's angle for perpendicularly polarized light when transitioning from a high to a low refractive index.
Source: What They (Probably) Don't Teach You About Rainbows At School
