1. Light and Optics

2. What is Light? Light is an electro-magnetic wave
Electro -> having to do with electricity
Magnetic -> relating to magnetism

3. Light is Fast! 300 000 000 meters per second
kilometers per hour
Sun
Earth

4. Where can we get light?
Most common type of light is white light …. Room lights, sun, lightbulbs
Other light sources are special – only make one color of light
Show light bulb and laser with fog here!!!!

5. What is white light made of?
White light is made from all the colors in the rainbow
Look closely at a Television:
Made of Red, Green, and Blue dots
Most common form of light is white light.

6. How can we split white light into colors?
A Prism:
What is a prism????? What is a grating?????
Or A Grating:

7. Controlling light Reflecting with mirrors
Bending with lenses (Refracting)
Blocking, like a shadow in the sun
We’re engineers – we like building things. To build things that use light, we have to control light.

8. Optics in Nature

9. Why do we control light? Your eyes Eyeglasses and contact lenses
Lenses for TV, movie, and photographic cameras
Photocopiers and fax machines
Binoculars and telescopes
Microscopes and magnifiers

10. More Uses Projectors (overhead, movie, slide, TV) CD players
Supermarket product code laser scanners
Weather and spy satellites
Medical systems (to look inside the body)
Solar energy systems

11. Illusions

12. Illusions

13. Illusions
How many feet does this elephant have?

14. Illusions

15. Illusions