spectral luminous efficiency(redirected from V(l))
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spectral luminous efficiency
(General Physics) a measure of the efficiency of radiation of a given wavelength in producing a visual sensation. It is equal to the ratio of the radiant flux at a standard wavelength to that at the given wavelength when the standard wavelength is chosen so that the maximum value of this ratio is unity. Symbol: V(λ) (for photopic vision) or V′(λ) (for scotopic vision)