A property of a substance—such as a printing ink film or coating or the back of a cathode-ray tube—produced from phosphors which have the ability to become luminous at certain wavelengths when exposed to heat, light, or ultraviolet rays.
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A property of a substance—such as a printing ink film or coating or the back of a cathode-ray tube—produced from phosphors which have the ability to become luminous at certain wavelengths when exposed to heat, light, or ultraviolet rays.