COLOR AND LIGHT

What you see when you see color

Red Channel 

Green Channel 

Blue Channel 

Light vs. Pigment

CMYK

Additive

Light

Subtractive

RGB

Pigment

???

Light vs. Pigment

Subtractive (CMYK) = Pigments

Additive (RGB) = Light

Color and Temperature

Red Light Blue Light

Red Light Blue LightHOT

COOL

Star’s and Color

Student ChallengeWhich stars in the field are the hottest? What do you notice about the bright star on the far right of the image? Is it hot or cool? How do you know? If you were an astronomer and only wanted to take photographs of very hot starts, while filtering all the cool stars out of the image, what type of color filter would you use on your telescope?

Dumbell Nebula

Electromagnetic Spectrum

Prism–Refraction/Dispersion, TIR

Spectroscope

Scattering/Absorption Why Are Sunsets

Red? Hint: Sunsets are more spectacular the smoggier the location…

Why Is The Sky Blue?

Why Are Clouds White?

Why Is Water Cyan?