This site explains what color is and its expression in light, etc...\r\nColor is a function of the human visual system, and is not an intrinsic property. Objects don't "have" color, they give off light that "appears" to be a color. Spectral power distributions exist in the physical world, but color exists only in the mind of the beholder.
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Nanocrystals make dentures shine
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AACR 103rd Annual Meeting 2012
Conference on Lasers and Electro-Optics and the...