Color & Vision. Parts of the Eye l 3 types of cones in retina l Each responds more strongly to wavelength for which it is named l As the cones are stimulated.

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Presentation transcript:

Color & Vision

Parts of the Eye

l 3 types of cones in retina l Each responds more strongly to wavelength for which it is named l As the cones are stimulated in different proportions, our visual system constructs the colors we see.

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

Primary Light Colors and Color Addition Complementary Colors R + G = Y R + B = MG + B = CR + G + B = W Any two colors of light which when mixed together in equal intensities produce white are said to be complementary colors of each other. Yellow + Blue = WhiteMagenta + Green = WhiteCyan + Red = White

Color Subtraction

Color Subtraction Practice Red Black Magenta light shines on a sheet of paper containing a yellow pigment. Determine the appearance of the paper. Red Yellow light shines on a sheet of paper containing a blue pigment. Determine the appearance of the paper. Black

Pigments

Mixing Pigments Pigment One Pigment Two Colors Reflected Color Observed CyanMagenta Yellow CyanYellow Cyan, Magenta Yellow Suppose an object is permeated by a mixture of two or more pigments and illuminated with white light. Complete the table.

Mixing Pigments Pigment One Pigment Two Colors Reflected Color Observed CyanMagentaBlue MagentaYellowRed CyanYellowGreen Cyan, Magenta YellowNoneBlack Suppose an object is permeated by a mixture of two or more pigments and illuminated with white light. Complete the table.

4 Color Printing

Color Shadows – 2 Lights

Color Shadows – 3 Lights

Ketchup Bottle

Retinal Fatigue

Flag

The Rose

Black dot

Black Dots

Elephant Legs

Man & Woman

Old Woman … Young Girl

Vanity

Two Faces … Or One?

Face or Aleut

Book

Lines

Rabbit Duck

Spectral Distribution of Sun

Scattering

Scattering

Why is the Sky Blue l Blue Sky – Red Sunset Blue Sky – Red Sunset

l /blue_sky.html /blue_sky.html

Assorted Links l Link Showing Absorption Graph Link Showing Absorption Graph l Smithsonian Link Smithsonian Link

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