1. Snell's Law & Total Internal Reflection
By: Kara Brinson

2. refraction
Refraction is caused by light passing from one medium to another and experiencing a change in speed. Refraction is responsible for image formation by lenses and the eye.

3. snell's law
Snell's law is a formula used to describe the relationship between the angles of incidence and refraction.
How exactly can we use Snell's Law? Since Snell's Law involves refraction, the indices of refraction of different mediums, n, are always different for each medium.

4. The Index of Refraction
describes the effect of atoms and molecules on the light as it travels through a transparent material

5. Critical Angle
the minimum angle of incidence where total internal reflection takes place.

6. Total Internal Reflection
Total Internal Reflection, or TIR, is the reflection of the total amount of incident light at the boundary between two media.

7. Necessities for it to Transpire
TIR only takes place when both of the following two conditions are met
the light is in a more dense medium and approaching a less dense medium
the angle of incidence is greater than the critical angle.

8. Fiber Optics
One of the most common applications of total internal reflection is in fiber optics. An optical fiber is a thin, transparent fiber for transmitting light.

9. Citations
Source: Boundless. “Total Internal Reflection and Fiber Optics.” Boundless Physics Boundless, 26 May Retrieved 24 Feb from physics-textbook/geometric-optics-24/reflection-refraction-and-dispersion-169/total-internal- reflection-and-fiber-optics /
Source:physics classroom. 1/The-Cause-of-Refraction
source:Refraction, Snell's law, and total internal reflection.Relevant sections in the book : source:High School Physical Science: Tutoring Solution What is Snell's Law? Chapter 13 / Lesson law.html

10. True or False
Snell's law is a formula used to describe the relationship between the angles of incidence and refraction
N=c/v is the formula for Index of Refraction
TIR needs 23 conditions to be met to take place
the angle of incidence is greater than the critical angle
TIR is applied in Fiber Optics
Refraction is responsible for image formation by lenses and the eye

11. Multiple choice 7. TIR stands for Total Internal Reflection
Not Total Internal Reflection

12. This is a picture of 8.
Critical angle
Index of refraction

13. This is a picture of 9.
Critical angle
Index of refraction

14. This is a picture of
10.
Snells law
Critical angle