fluorescence

fluorescence (flur-es´ens)

Emission of a longer wavelength radiation by a substance as a consequence of absorption of energy from a shorter wavelength radiation, continuing only as long as the stimulus is present; distinguished from phosphorescence in that, in the latter, emission persists for a perceptible period of time after the stimulus has been removed. See photoelectric effect. [fluorspar + -escence, inchoative suffix]

 

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