1. Light and Color
light and color

2. Light and Matter Absorb: to soak up Reflect: to throw back
Transmit: to pass through

3. Light and Matter
Transparent: materials that allow light to pass through them
Examples: glass, water, air

4. Light and Matter
Translucent: materials that allow some light to pass through them
Examples: lamp shade, curtains

5. Light and Matter
Opaque: materials that do not allow light to pass through them
Example: bricks, metal, rubber, wood

16. Regular Reflection
Regular Reflection: light reflecting off a smooth surface
Examples: mirror, glass
cloaking devices

17. Diffuse Reflection
Diffuse Reflection: light reflecting off a rough surface at many different angles
Examples: rocks, brick, the ground

18. Refraction of Light
Refraction: when light bends as it passes into a new medium
The index of refraction: the amount of bending that takes place during refraction
Depends on the speed of light in each material

19. Rainbows
Rainbow: droplets of water refracting light

21. Mirages
Mirage: an image of a distant object produced by the refraction of light through layers of air

22. Light and Color
Color: we see the color of light that is being reflected by an object
White: all wavelengths of light are reflected
Black: no wavelengths of light are reflected
why is the sky blue?
colorblindness test
Sauce on Color
color brain games
Brain Games: in living color
how we see color
how we see in the dark

23. How we see Light enters your eye and is focused on the retina
Rods and cones in the back of the eye absorb light
Light is converted into nerve impulses and transmitted to the brain

24. Your Eyes Seeing Color
Cones: cells that allows us to see colors and shapes (daytime vision)
Red cones: respond to red and yellow
Green cones: respond to yellow and green
Blue cones: respond to blue and violet
Rods: cells that process light but not color or shapes (night vision)

27. Color Blindness
If you are color blind, one or more of your sets of cones is not functioning properly
8% of men
0.5% of women

35. Primary Colors
Primary colors of Light: Red, green and blue combine to make every other color of visible light
Red + blue = magenta
Blue + green = cyan
Red + green = yellow
White light: created by mixing all of the colors of light together