Chapter 13.2
Refraction and Total Internal Reflection
A straw in a glass of water looks broken at the surface, and a fish sees the whole sky squeezed into a circle overhead. Light changes speed at the boundary, and bending is the cost.
free · lesson 17 of 27
By the end
- 01Explain refraction as a change in wave speed and relate the index of refraction to speed
- 02Apply Snell's law to predict bending toward or away from the normal
- 03Find the critical angle and predict when total internal reflection occurs