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Fluorescence

flʊəˈrɛsn(t)s

Fluorescence definitions
noun
fluorescence
  1. the visible or invisible radiation produced from certain substances as a result of incident radiation of a shorter wavelength such as X-rays or ultraviolet light

    "this fluorescence is visible even when the paper screen is at a distance of two metres"

    • the property of absorbing light of short wavelength and emitting light of longer wavelength