Color vision is the ability of an organism or machine to distinguish objects based on the wavelengths (or frequencies) of the light they reflect, emit, or transmit. Colors can be measured and quantified in various ways; indeed, a human's perception of colors is a subjective process whereby the brain responds to the stimuli that are produced when incoming light reacts with the several types of cone photoreceptors in the eye.
Read more about Color Vision: Wavelength and Hue Detection, Physiology of Color Perception, Evolution, Mathematics of Color Perception, Chromatic Adaptation
Famous quotes containing the words color and/or vision:
“Rain falls into the open eyes of the dead
Again again with its pointless sound
When the moon finds them they are the color of everything”
—William Stanley Merwin (b. 1927)
““The god has not yet answered to our pity
For the black vision and tangle in her brains,
Nor is there knowing soever in the city
Of the red histories that throbbed in her blue veins.””
—Allen Tate (1899–1979)