luminance

Noun

lu=mi=nance

WORDNET DICTIONARY

luminance(n = noun.attribute) brightness, brightness level, light, luminosity, luminousness - the quality of being luminous; emitting or reflecting light; "its luminosity is measured relative to that of our sun"

is a kind of physical property

has particulars: illuminance, illumination, incandescence, glow, luminescence

luminance, n. Physics the intensity of light emitted from a surface per unit area in a given direction.

Etymology

L luminare illuminate (as LUMEN)

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