That property of an object which is dependent on the Wavelength of the Light it reflects or, in the CASE of a luminescent body, the wavelength of the light it emits. If, in either case, this light is of a single wavelength, the color seen is a pure spectral color, but, IF the light of two or more wavelengths is emitted, the color will be mixed. White light is a Balanced mixture of all the visible spectral colors.

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