Variable | Description |
|
|
θ1 | Angle of incidence |
θ2 | Angle of refraction |
θB | Brewster angle |
θc | Critical angle |
fFocal length
mMagnification
n, n1, n2 | Index of refraction |
r, r1, r2 | Radius of curvature |
uDistance to object
vDistance to image
For reflection and refraction problems, the focal length and radius of curvature are positive in the direction of the outgoing light (reflected or refracted). The object distance is positive in front of the surface. The image distance is positive in the direction of the outgoing light (reflected or refracted). The magnification is positive for an upright image. Reference: 3.
Law of Refraction (9, 1)
Equation:
n1 ⋅ SIN(θ 1) = n2 ⋅ SIN(θ 2)
Example:
Given: n1=1, n2=1.333, θ1=45_°.
Solution: θ2=32.0367_°.
Equation Reference