Perhaps the joke is aimed at people who are NOT physicists.A good play!
Alas the light is not "bent", it simply changes velocity on entrance into the glass (N=1.52) prisms.
As a fan of the original artist, I too see the humor... good one!
A good play!
Alas the light is not "bent", it simply changes velocity on entrance into the glass (N=1.52) prisms.