HP 50g Graphing, 48gII Graphing manual Critical Angle 9, Brewster’s Law 9

Critical Angle (9, 2)

Equation:

S IN(θ c) = n1n2

Example:

Given: n1=1, n2=1.5.

Solution: θc=41.8103_°.

Brewster’s Law (9, 3)

The Brewster angle is the angle of incidence at which the reflected wave is completely polarized.

Equations:

TAN(θ B ) = n2	θ B + θ 2 = 90
n1

Example:

Given: n1=1, n2=1.5.

Solution: θ B=56.3099_°, θ 2=33.6901_°.

538 Equation Reference