Optics II

What happens when a ray of light traveling through transparent medium encounters a boundary leading into another transparent medium? 
Define Refraction?
Define the angle of refraction

The incident ray,  the reflected ray, the refracted ray, and the normal all lie on the ______ ______. The path of the light through the refracting surface is _______. Again, all rays and the normal lie in the _____ _____, and the refracted ray is bent toward the ______ (why?)
Label the 3 rays and the normal

What two things does the angle of refraction depend on? 
State the formula for the angle of refraction and explain the components

_______ is what makes objects half-submerged in water look odd
State the formula for index of refraction, n, of a medium. What changes for it in a vacuum vs in other media?

Expand on the formula for the index of refraction 
We find:
n₁sinθ₁ = ______
Specify each angle and name the relationship

Quick Summary
Incident angle = ______ angle
All angles measured from normal ___ ≤ θ ≤ ___
Rays are _______
n = ____
Frequency is _______ in all mediums
fλ = ___ and n = _____

n₁sinθ₁ (aka _____ or _____) = _______
What characteristic of Snell's Law is displayed

The exit ray is _______ to the incident ray, except it is shifted ______. What characteristic of Snell's Law is displayed 

According to Snell's law:
If n₁ < n₂, then θ₁ ___ θ₂
If n₁ > n₂, then θ₁ ___ θ₂
The ray has a _____ at the boundary (label)

If the ray direction is reversed, the incident and refracted angles are interchanged but the values of _____ and _____ remain the the same (label). Also name this Snell's law characteristic.

What Snell's Law characteristic is displayed: 

What characteristic of Snell's Law is displayed?
Angle of incidence is ______ 
Transmission is getting ______
When does the critical angle occur?
Reflection is getting _______
θ_c = _______
When does total internal reflection occur?

State 4 Application of Total Internal Reflection (4)