luminance
lu·mi·nance / ˈloōmənəns/ • n. Physics the intensity of light emitted from a surface per unit area in a given direction. ∎ the component of a television signal that carries information on the brightness of the image.
luminance
luminance A measure of the intensity of electromagnetic radiation emitted by a source in a specified direction.
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Brightness (Photometry)
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Brightness (Photometry)