self analysis
Why do computer screens etc use red, GREEN & blue?
February 16, 2005 12:50 PM Subscribe
The primary colours are red,yellow & blue. All other colours can be made from them. Why then do computer screens etc use red, GREEN & blue? posted by TiredStarling to computers & internet (23 answers total) 1 user marked this as a favorite Quoth the Wiki:
"The human eye contains photoreceptor cells called cones which normally respond most to yellowish-green, green, and blue light (wavelengths of 564nm, 534nm, and 420nm respectively). The color yellow, for example, is perceived when the yellow-green receptor is stimulated slightly more than the green receptor, and the color red is perceived when the yellow-green receptor is stimulated significantly more than the green receptor.
Although the peak responsitivities of the cones do not occur at the red, green and blue wavelengths, those three colors are described as primary because they can be used relatively independently to stimulate the three kinds of cones." posted by falconred at 12:57 PM on February 16, 2005
Red, yellow, and blue are the primary subtractive colors: in pigmets, red pigmet only reflects "red" light. While red, green, and blue are the primary additive colors. If you want to emit light, you have to use the additive method as you're adding light. If you're using a reflective method (paper, metal, plastic) you have to use the subtractive system.
Compare Additive color to Subtractive color. posted by skynxnex at 1:05 PM on February 16, 2005
Red, yellow, and blue are not the primary colors in any meaningful sense.
Red, green and blue are the primary colors of light for the aforementioned reasons - because your eyes are most sensitive to them and it's easiest to use them.
Magenta, cyan, and yellow are the true primary pigment colors. That's why printer ink uses those three colors instead of straight-up red or blue. You'll notice, if you try to make purple out of red and blue,
February 16, 2005 12:50 PM Subscribe
The primary colours are red,yellow & blue. All other colours can be made from them. Why then do computer screens etc use red, GREEN & blue? posted by TiredStarling to computers & internet (23 answers total) 1 user marked this as a favorite Quoth the Wiki:
"The human eye contains photoreceptor cells called cones which normally respond most to yellowish-green, green, and blue light (wavelengths of 564nm, 534nm, and 420nm respectively). The color yellow, for example, is perceived when the yellow-green receptor is stimulated slightly more than the green receptor, and the color red is perceived when the yellow-green receptor is stimulated significantly more than the green receptor.
Although the peak responsitivities of the cones do not occur at the red, green and blue wavelengths, those three colors are described as primary because they can be used relatively independently to stimulate the three kinds of cones." posted by falconred at 12:57 PM on February 16, 2005
Red, yellow, and blue are the primary subtractive colors: in pigmets, red pigmet only reflects "red" light. While red, green, and blue are the primary additive colors. If you want to emit light, you have to use the additive method as you're adding light. If you're using a reflective method (paper, metal, plastic) you have to use the subtractive system.
Compare Additive color to Subtractive color. posted by skynxnex at 1:05 PM on February 16, 2005
Red, yellow, and blue are not the primary colors in any meaningful sense.
Red, green and blue are the primary colors of light for the aforementioned reasons - because your eyes are most sensitive to them and it's easiest to use them.
Magenta, cyan, and yellow are the true primary pigment colors. That's why printer ink uses those three colors instead of straight-up red or blue. You'll notice, if you try to make purple out of red and blue,