Snell's law proof using springs

2016-04-01

[public] 151K views, 5.94K likes, 34.0 dislikes audio only

This is a supplement to the Brachistochrone video, proving Snell's law with a clever little argument by Mark Levi.

The Brachistochrone, with Steven Strogatz by 3Blue1Brown
/youtube/video/Cld0p3a43fU