The Causes of Color

Color is fascinating, but we usually don't consider what it is we are seeing. This fantastic website explains the phenomenon of color in wonderful detail. Did you know that all the colors in the universe result from a mere 15 physical causes? How about that diamonds are colorless because they are held together so tightly that they are incapable of absorbing visible light? Or that birds' tetra- or pentachromatic color space is the most complex in nature? This exhibit is a public service of the Institute for Dynamic Educational Advancement (IDEA).

Image: The Turning Road, Lestraque - Andre Derain (1906)