PHYS 1010 Chapter Notes - Chapter 27: Cyan, Blauw-Wit Amsterdam, Chapter 27
13 Nov 2016
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Document Summary
The colors we see depend on the frequency of light. Most objects reflect light, not emit it. Different materials have different natural frequencies for absorbing and emitting light. Absorb light of some frequencies and reflect the rest. An object reflects only the frequencies that are present in the illuminating light. Appearance depends on type of light shining on it. The color of a transparent object depends on the color of light it transmits. Colored glass absorbs all colors in which it transmits. Normal window glass transmits light of all visible frequencies. Sun"s white light is made of all of the visible frequencies. Intensity is greatest in the yellow/green part of the spectrum. Colors that when combined, they produce white. Mixing pigments in paint is totally different from mixing colored lights. The 3 colors of absorbing pigments (m, y, c) that can reflect any other color in the visible light part of the electromagnetic spectrum.
