Coating Terms

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Color parameters obtained by converting measured X, Y and Z values of any color to decimal numbers that sum up to 1. This way, instead of three parameters, an easier two-dimensional color coordinate system is obtained.
Monochromatic light is a light ray of a single wavelength. It is produced either by radiation caused by heating up some pure metals or by passing the polychromatic light through prisms (Monochromators).
Formerly, polychromatic light was defined as visible light array composed of many light rays in various colors. With the semantic extension in the course of time, this definition has changed to define light composed of light rays with many different wavelengths irrespective of whether it is in visible region or not.