PSYCH 1XX3 Lecture Notes - Lecture 6: Color Vision, Additive Color, Subtractive Color
5 May 2015
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Document Summary
For birds, the color of a potential mate"s feathers provides signals to other birds about how healthy the bird is. Example: mixing blue and yellow paint to make green. Subtractive color mixing applies to the mixing of pigments, dyes, or paints, and it is called subtractive" because every reflective surface absorbs (or subtracts) the color that it does not reflect. Adding other pigments to that surface alters the combination of wavelengths subtracted. All wavelengths are being absorbed expect those that the two pigments jointly reflect. The primacy colors are red, yellow, and blue. The complementary color of red is green, yellow is purple, and blue is orange. If you mixed a primacy color with its complementary color, you always get brown: additive color mixing when colored lights add their dominant color to the mixture. The primacy colors are red, green, and blue. The complementary color of blue is yellow, red is a bluish-green, and green is a reddish-purple.
