Extra close brace or missing open brace

Extra close brace or missing open brace

How Things Move

Why Things Move

Index for
Chapter 11: Wave Optics

Index for
Chapter 13: Images

Index for
Chapter 12
Ray Optics

1. Index of Refraction

ray
speed of light
index of refraction
$c = 3 \times 10^{8} m / s$
$n = \frac{c}{v}$

2. How Light Travels

absorbed
reflected
transmitted
interface
incident ray
normal
A light ray will travel in a straight line at constant speed forever, until it hits something.

3. Law of Reflection

reflected ray
specular reflection
diffuse reflection
$θ_{r} = θ_{i}$

4. Transmission of Light

refracts

5. Snell's Law

snell's law
When rays slow down, they bend towards the normal.
When rays speed up, they bend away from the normal.
$n_{i} \sin θ_{i} = n_{t} \sin θ_{t}$

6. Total Internal Reflection

total internal reflection
critical angle
$θ_{c} = \sin^{- 1} \frac{n_{t}}{n_{i}}$