Pigments and Reflective Media
Pigments are chemicals that selectively absorb and reflect different spectra of light. When a surface is painted with a pigment, light hitting the surface is reflected, minus some wavelengths. This subtraction of wavelengths produces the appearance of different colors. Most paints are a blend of several chemical pigments, intended to produce a reflection of a given color.
Pigment manufacturers assume the source light will be white, or of roughly equal intensity across the spectrum. If the light is not a pure white source (as in the case of nearly all forms of artificial lighting), the resulting spectrum will appear a slightly different color. Red paint, viewed under blue light, may appear black. Red paint is red because it reflects only the red components of the spectrum. Blue light, containing none of these, will create no reflection from red paint, creating the appearance of black.
Read more about this topic: Color
Famous quotes containing the words reflective and/or media:
“Be reflective ... and stay away from the theater as much as you can. Stay out of the theatrical world, out of its petty interests, its inbreeding tendencies, its stifling atmosphere, its corroding influence. Once become theatricalized, and you are lost, my friend; you are lost.”
—Minnie Maddern Fiske (18651932)
“The media transforms the great silence of things into its opposite. Formerly constituting a secret, the real now talks constantly. News reports, information, statistics, and surveys are everywhere.”
—Michel de Certeau (19251986)