236+Manual+09+Optics+in+2D

# This idea is the basis behind the screens on most

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ht (so that it only oscillating in one direction) and then pass it through a polarizing ﬁlter oriented in the opposite direction, no light will escape. This idea is the basis behind the screens on most calculators. At a certain angle, referred to as Brewster’s Angle, all of the light reﬂected off the surface of a material will be polarized in one direction. The equation relating the index of refraction of the material (n2 ), the index of refraction of the surrounding medium, n1 , and the incident angle (Brewster’s Angle), θB is: tan θB = 2 n2 n1 (3) 2.4 Total Internal Reﬂection When we look at Snell’s Law, we can consider the case in which light is going from a medium with a high index of refraction to a medium with a low index of refraction. For example, if light is going from dense optical media to air. The interesting issue is that mathematically sin θ must always be between 0 and 1. So if ni > nr and sin θr = 1, there is a maximal value of θi (known as the critical angle) where you can get a solu...
View Full Document

## This document was uploaded on 02/15/2014.

Ask a homework question - tutors are online