Geometric Optics
So far EM waves in vacuum
What happens to EM waves (usually light) in different materials?
- we must include k in Maxwell’s Equations -----> index of refraction, n.
Restriction: waves whose wavelength is much shorter than the objects with which it interacts.
Assume that light propagates in straight lines, called rays.
Our primary focus will be on the REFLECTION and REFRACTION of these rays at the interface of two materials.