Visual Encyclopedia

Red

Red is the color at the end of visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–740 nanometers. It is a primary color in the RGB color model and the CMYK color model, and is the complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson, and vary in shade from the pale red pink to the dark red burgundy. The red sky at sunset results from Rayleigh scattering, while the red color of the Grand Canyon and other geological features is caused by hematite or red ochre, both forms of iron oxide. Iron oxide also gives the red color to the planet Mars. The red color of blood comes from protein hemoglobin, while ripe strawberries, red apples and reddish autumn leaves are colored by anthocyanins.

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Red

Red

Red has so many meanings. Check it out (:

Contributed by John Chervanev

Do we all see the same red just because our brains are similar to each others? Or are we, for some strange reason, seeing different shades of red, that we both think are called the standard red?

Contributed by Rachna Singh

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