Light Primaries

Plate7. Light Primary Colors

(Ref. plate.7: http://en.wikipedia.org/wiki/Primary_color ; May 30, 2012)

Light Primaries - red, blue, green. Mixing colored light as on a computer screen, or when theatrical spotlights overlap on a white wall. Its effects are less familiar than pigment mixture to most people. If all three primaries are mixed, the theoretical result is white light (Plate7). Therefore light mixture is sometimes referred to as additive mixture.

“The primary colors of light are defined as any three colors or frequencies of light that produce white light when combined in the correct intensity. The primary colors of light are Red, Green, and Blue. When these wavelengths are combined properly they produce white light…secondary colors of light result from combinations at the correct frequencies of primary colors of light. These include Yellow, Magenta, and Cyan. This is depicted in the following figure. Yellow results from the combination of Red and Green light. Magenta results from the combination of Red and Blue light. Cyan results from the combination of Green and Blue light. The primary and secondary colors of light are depicted below (plate8).”

Plate8. Secondary Colors in Light Spectrum

 (Ref. http://www.forhair.com/Articles/Primary_and_Secondary_Colors_of_Light.htm ; May 31, 2012)