Brightness meaning

brītnĭs
The state or quality of being bright.
noun
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The dimension of a color that represents its similarity to one of a series of achromatic colors ranging from very dim (dark) to very bright (dazzling).
noun
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The quality or condition of being bright.
noun
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The luminous aspect of a color (as distinct from its hue) by which it is regarded as approaching the maximum luminance of pure white or the lack of luminance of pure black.
noun
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The black level of a display screen. Although it may sound peculiar, the brightness adjusts the "black level" of the display system (how black the black is). See contrast.
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The quality of being bright.
noun
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The perception elicited by the luminance of an object.
noun
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The effect or sensation by means of which an observer is able to distinguish differences in luminance.
noun
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Origin of brightness

  • bright +‎ -ness

    From Wiktionary