Alternate Theory of Color Perception
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Szeszol, Jim Naperville Central H.S.
To observe an alternative theory of color perception.
A) Color wheel(s), wooden safety matches (for spindles), masking
B) Black and white slide positives.
A) Activity - assemble color wheel(s) and spin; observe colors in
daylight and under fluorescent light. Have students form a possible theory.
B) Land projections - two black and white slides (positives) are
prepared and projected as outlined in "The Physics Teacher," March
1968, p. 129. Full color images, not possible with Newtonian
theory, are produced.
Edwin Land's (of the Polaroid Land Corp.) "Retinex Theory"
states that the eye processes black and white gray scales using three
photoreceptors. Each photoreceptor processes the signals differently
and then combines the processed information to produce colored images
in the brain.
Land, Edwin H. "Experiments in Color Vision," Scientific American,
Land, Edwin H. "The Retinex," American Scientist, 52, 1964.