Color & VisionColor & Vision

Parts of the EyeParts of the Eye

3 types of cones in retina Each responds more strongly to wavelength for which

it is named As the cones are stimulated in different proportions,

our visual system constructs the colors we see.

Cone Response

Primary ColorsPrimary Colors

Red Blue Green

Appearance of ColorAppearance of Color

Complementary ColorsComplementary Colors

When two of the three additive primary colors are combined:

Red + Blue = Magenta Red + Green = Yellow Blue + Green = Cyan

Two colors that combine to produce white are called complementary

Magenta + ? = White Yellow + ? = White Cyan + ? = White

Complementary ColorsComplementary Colors

When two of the three additive primary colors are combined:

Red + Blue = Magenta Red + Green = Yellow Blue + Green = Cyan

Two colors that combine to produce white are called complementary

Magenta + Green = White Yellow + Blue = White Cyan + Red = White

4 Color Graphics4 Color Graphics

Color SubtractionColor Subtraction

Pigments – Color SubtractionPigments – Color Subtraction

Color LinksColor Links Colors of Light Song Lyrics Color Mixing – Truscio Color Tutorial – Jewitt Physics Classroom – Color Physics 2000 Color Java Applets Ishihara Test for Color Blindness

Retinal FatigueRetinal Fatigue

FlagFlag

The RoseThe Rose

Black dotBlack dot

Black DotsBlack Dots

Elephant LegsElephant Legs

Man & WomanMan & Woman

Old Woman … Young GirlOld Woman … Young Girl

VanityVanity

Two Faces … Or One?Two Faces … Or One?

Face or AleutFace or Aleut

BookBook

LinesLines

Rabbit DuckRabbit Duck

Spectral Distribution of SunSpectral Distribution of Sun

ScatteringScattering

ScatteringScattering

Why Is the Sky Blue?Why Is the Sky Blue?Why Are Sunsets Red?Why Are Sunsets Red?

http://www.stillmoving.ca/physics/faq/General/BlueSky/blue_sky.html

Absorption of Light by WaterAbsorption of Light by Water Link Showing Absorption Graph

HomeworkHomework Homework 2

Read chapter 27