luminousness

Definitions of luminousness
1

n the quality of being luminous; emitting or reflecting light

Synonyms:
brightness, brightness level, light, luminance, luminosity
Types:
illuminance, illumination
the luminous flux incident on a unit area
incandescence
light from heat
glow, luminescence
light from nonthermal sources
Type of:
physical property
any property used to characterize matter and energy and their interactions

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