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Light Mixing
The color of a light is the result of a mixture of wavelengths from the visible spectrum. When red, blue, and green light wavelengths are combined in equal proportions, they produce white light. This may seem counterintuitive, because most of us have learned that mixing different-colored paints yields brown (not white). The rules of light mixing differ from those of paints and other pigmented substances.
© 2009 Richard Megna - Fundamental Photographs