Huygens' principle

Huygens’ principle is not an easy physical concept to grasp and I've often tried to avoid it (if possible). But at last making this animation made it a little clearer (to me). You can control: v1 and v2 (light speeds in the media 1 and 2) =distance between adjacent light rays nr: number of rays :angle of incidence (with respect to the horizontal line) You'll probably need to adjust the font size and layout to match your screen resolution. Gif in twitter: https://twitter.com/sfera314/status/1495725283751649280?s=20&t=TB13K_u9BlM_upvy0uvSPQ

Huygens' principle