White light
Combination of all light
Color is created by
Different wavelengths of the electromagnetic spectrum
Colors in order of wavelength
ROYGBIV
How does a prism separate colors of light?
Different wavelengths refract in different amounts.
Short-most
Long-least
Why
Higher frequency=lower speed=refract more
Cells of the eye
Cone 120mil
Rod 6-7mil
Rod cells properties
Sensitive to low light, allows us to see in dim light
Come cells properties
Helps us see light, has three types that allow us to see blue (short), green (medium), and red (long)
Why is a banana yellow?
The interactions of light with an object depends on the wavelength.
Why does a red filter make a blue shirt look black
The red filter absorbs blue light, making it look black.
Pigments
More color=more absorption=more dark
Color subtraction on a yellow shirt
A white light will hit a shirt and only the blue will be absorbed, and red and green will be reflected, creating yellow as it strikes the eye.
