The additive color system involves light emitted directly from a source, before an object reflects the light. The additive reproduction process mixes various amounts of red, green and blue light to produce other colors. Combining one of these additive primary colors with another produces the additive secondary colors cyan, magenta, yellow. Combining all three primary colors produces white.
TV's and computer monitors use RGB. Thousands of red, green and blue phosphor dots make up the images on monitors. These dots produce light when activated electronically, and the combinations of these red, green and blue dots produce all the colors on a video monitor. Because the dots are so small and close together, we do not see them individually, but see the colors formed by the mixture of light.
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