1. Refraction phenomena and applications

2. Learning goals We are learning why total internal reflection occurs.
We are learning various applications of refraction and reflection.

3. Total internal reflection
The reflection of all the incident light off the boundary
Only when going from more dense to less dense mediums

4. The critical angle
TIR: when the angle of incidence is greater than the critical angle
The critical angle is the angle where the light refracts along the boundary

5. Water demo!!!

6. TIR Examples

7. dispersion The refraction of white light into separate colours
Different colours of white light travel at different speeds and therefore have a different refractive index (n)

8. TIR and dispersion

9. mirages

10. Reflection and refraction
Refraction is usually accompanied by reflection
PARTIAL reflection and refraction

11. Learning goals We are learning why total internal reflection occurs.
We are learning various applications of refraction and reflection.

12. Please complete
P531 #1-3, 8,9