perception of everything around us.White LightWhite light contains light from all visible wavelengths in balanced quantities.Black LightBlack light is the absence of all wavelengths.Perceived LightDifferent individual wavelengths in the spectrum give rise to what we perceive as color. Forexample, a wavelength around 700 nm (0.0007 mm wavelength) in interpreted by our eyes asred, while the other end of the scale, 400 nm, is interpreted by our eyes as violet.Neutral ColorsAlthough the term color is used, neutral colors do not have properties of hue or saturation. Theyare described in terms of lightness only.The neutral colors are black and white and all shades of gray in between. A balanced mix of thesubtractive primariescyan, magenta and yellowyields the neutral color or black (in theory). Thesame effect can be achieved with the additive primaries by having an equal mix of red, greenand blue light.Primary & Secondary ColorsIn theory, all colors can be made up from a very small group of color elements.Primary ColorsThere are three primary colors: blue, red and yellow. All other colors can be obtained by mixingthe primary colors in varying proportions.Secondary ColorsMixing two primary colors in equal proportions produces what is known as a secondary color.For example, mixing blue and yellow produces the secondary color green.Problems Using ColorComputer monitors and printers use different methods to generate colors. Computer monitors339
