1. Light and Waves What causes a wave disturbance?
What is the source of electromagnetic waves?
What is a photon?
Is a photon best described as particle or wave?

2. Light and Waves What is the speed of light in a vacuum?
How fast can light travel around the earth?
How long does it take light to reach earth from the Sun?

3. Light and Waves
What are the frequencies of light and how do they compare?
Which frequencies have the shortest wavelength? The longest?
Which frequencies have the most energy? The least?

4. λ is the wavelength- the distance from crest to crest on a wave
Light and Waves
C = λf
The frequency (f) of a wave is the number of waves to cross a point in 1 second (units are Hertz – cycles/sec or sec-1)
λ is the wavelength- the distance from crest to crest on a wave

5. Light and Waves What is transparent / opaque ?
What is the difference between a longitudinal and transverse wave?
What is propagated in a wave?

6. Light and Waves

7. What is constructive interference? Destructive interference?
Light and Waves
What is constructive interference?
Destructive interference?

8. Light and Waves

9. Color Addition Primary Colors Red – Blue - Green
Adding Red + Blue = Magenta
Adding Red +Green = Yellow
Adding Blue + Green = Cyan
Adding Red + Green + Blue = White

10. Magenta + Cyan + Yellow removes all primary colors = Black
Color Subtraction
Primary Pigments
Secondary Pigments
Magenta – Yellow – Cyan
Cyan removes Red
Magenta removes Green
Yellow removes Blue
Magenta + Cyan + Yellow removes all primary colors = Black

11. Color Subtraction
Color Rays 1 1 2
Blue
Yellow
Cyan