Okay, you may not know Snell's law offhand, but you experience it every day. Whenever you put on a pair of glasses, or see light bend through a glass of water or a prism, this rule is in action.

Physicists Verify Reversal Of Snell's Law In "Left-Handed" Composite Material. ScienceDaily . Retrieved June 3, 2025 from www.sciencedaily.com / releases / 2001 / 04 / 010406074128.htm ...