1. Examples of waves
Electromagnetic waves

3. Polarization of Electric & Magnetic Fields
Polaroids
The intensity of light waves can be diminished by using a polarizing
filter (“polaroid”). Long-chain molecules absorb the electric field
in the direction parallel to the chain.
“Crossed” polarizers block light:

4. Polarization

7. Polarization of Electric & Magnetic Fields
Reflection
It turns out that reflection of light from a surface can also cause
light to be polarized. Brewster’s angle is that angle at which all
reflected light is polarized parallel to the surface of reflection.

8. The Electromagnetic Spectrum
 Visible light makes up a very small portion of the measured electromagnetic spectrum.

10. IR link: http://www.youtube.com/watch?v=-3uaTyNWcBI

11. Specular Reflection
Diffuse Reflection

13. Types of refraction From low n to high n (air to water)
From high n to low n (water to air)

14. Mirage (inferior)

15. Mirage (superior)

18. dispersion in water droplets!
Color and Dispersion
Rainbows arise due to
dispersion in water droplets!