Biology / Bio 2911 · Atom · ~20 seconds
Trichromatic Color Coding
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Human color vision uses three cone types tuned to short, medium, and long wavelengths; perceived color emerges from the relative activity ratio across all three, not any one cone alone.
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Equal stimulation of all three cone types is perceived as white light.
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A two-cone, dichromatic system is possible but limits the range of distinguishable colors compared with the human trichromatic system.