| Definition: | paint, pigment or dye that exhibits fluorescence as the result of exposure to daylight Note 1 to entry: Daylight fluorescent colours absorb energy from daylight in the shorter wavelength regions of the visible spectrum and/or in the ultraviolet region and re-radiate some of this energy at longer wavelengths, producing radiation in a small range of wavelengths in the visible region. Note 2 to entry: See also "photoluminescent material", "fluorescent material".
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