Psych 225 Nov 1_Color

Psych 225 Nov 1_Color - Why is the sky Carolina blue? A....

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Unformatted text preview: Why is the sky Carolina blue? A. Because God is a tarheel B. Because air molecules scatter more short wavelength light than light of other wavelengths C. Because of the way the human eye and brain responds to the spectral quality of light What is color? Perceptual response to the spectral quality of light Not all animals perceive color the same way Not all persons perceive color the same way Functions of color vision Discrimination Segment objects from each other and the background Functions of color vision Discrimination Segment objects from each other and the background Identification Determine an objects intrinsic surface reflectance Surface reflectance often indicates biologically important properties of the object Color and wavelength Fig. 9-4, p. 204 How many colors can we perceive? We can discriminate ~200 colors across the visible spectrum Varying intensity (brightness) and saturation (color purity) increases the number of discriminable colors to about one million The number of different colors we actually use (e.g., painting, graphic and fabric design) is about 1,200 Color and wavelength Color of light is related to its wavelength Color of objects is largely determined by the wavelengths of light they reflect Fig. 9-24, p. 218 Fig. 9-5, p. 204Fig....
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Psych 225 Nov 1_Color - Why is the sky Carolina blue? A....

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