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Color - Wikipedia, the free encyclopedia (3832 words) |
 | Since red or green mirrors exist, for example, why should we deny that standard mirrors are white?) An object that reflects some fraction of impinging light and absorbs the rest may look fl but also be faintly reflective (examples are fl objects coated with layers of enamel or lacquer). |
| A dominant theory of color vision proposes that color information is transmitted out of the eye by three opponent processes, or opponent channels, each constructed from the raw output of the cones: a red-green channel, a blue-yellow channel and a fl-white "luminance" channel. |
| Specifically, it explains why we cannot perceive a "reddish green" or "yellowish blue," and it predicts the color wheel: it is the collection of colors for which at least one of the two color channels measures a value at one of its extremes. |
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