Luminous exitance

the ability of a surface to emit light expressed as the luminous flux per unit area at a specified point on the surface Mv


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  • Luminous-flux

    noun, Optics. 1. the rate of transmission of luminous energy: expressed in lumens. noun 1. a measure of the rate of flow of luminous energy, evaluated according to its ability to produce a visual sensation. For a monochromatic light it is the radiant flux multiplied by the spectral luminous efficiency of the light. It is […]

  • Luminous-flux-density

    noun 1. luminous flux per unit of cross-sectional area.

  • Luminous-intensity

    noun, Optics. 1. the luminous flux in lumens emitted per unit solid angle by a light source, measured in candles. noun 1. a measure of the amount of light that a point source radiates in a given direction. It is expressed by the luminous flux leaving the source in that direction per unit of solid […]

  • Luminously

    [loo-muh-nuh s] /ˈlu mə nəs/ adjective 1. radiating or reflecting light; shining; bright. 2. lighted up or illuminated; well-lighted: the luminous ballroom. 3. brilliant intellectually; enlightened or enlightening, as a writer or a writer’s works: a luminous concept; luminous prose. 4. clear; readily intelligible: a concise, luminous report. /ˈluːmɪnəs/ adjective 1. radiating or reflecting light; […]

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