Reference Guide

5-38 Equation Reference
Critical Angle (9, 2)
Equation:
Example:
Given: n1=1, n2=1.5.
Solution: θ c=41.8103_°.
Brewster’s Law (9, 3)
The Brewster angle is the angle of incidence at which the reflected wave is completely polarized.
Equations:
Example:
Given: n1=1, n2=1.5.
Solution: θ B=56.3099_°, θ 2=33.6901_°.
S
I
N
θ
c
(
)
n
1
n
2
-
-
-
-
-
-
=
T
A
N
θ
B
( )
n
2
n
1
-
-
-
-
-
-
=
θ
B
θ
2
+
90
=