1. Light Reflection and Refraction

2. Reflection Law of Reflection

3. “normal” line ii rr The angle of incidence,  i, is equal to the angle of reflection,  r.  i =  r

4. 1. Incident ray of light 2. Reflected ray of light 3. Backward Extension Lines Lines extended backward from the reflected rays of light

5. Plane (Flat) Mirrors

6. Curved Mirrors “Objects in Mirror are Closer than they Appear!”… Why?

7. Curved Mirrors Or Not!

8. Refraction Angle of Refraction Optical Density

9. Refraction Snell’s Law –the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant n i sin  i = n r sin  r Index of Refraction –n substance = c / v substance

10. Dispersion of Light Dispersion –the separation of light into the spectrum

12. Dispersion of Light Water droplets act as lenses causing a dispersion of light, this light then reflects off of the back of the droplet

13. Homework! Read 29.1 – 29.5