Luminous



[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; shining; glowing: luminous colours
2.
(not in technical use) exhibiting luminescence: luminous paint
3.
full of light; well-lit
4.
(of a physical quantity in photometry) evaluated according to the visual sensation produced in an observer rather than by absolute energy measurements: luminous flux, luminous intensity Compare radiant
5.
easily understood; lucid; clear
6.
enlightening or wise
adj.

early 15c., “full of light,” from Latin luminosus “shining, full of light,” from lumen (genitive luminis) “light,” related to lucere “to shine” (see light (n.)). Related: Luminously.

luminous lu·mi·nous (lōō’mə-nəs)
adj.
Emitting light, especially emitting self-generated light.

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  • Luminous-efficiency

    noun, Optics. 1. the perceived brightness of light as a ratio of the total luminous flux to total radiant flux of the source; a measure of brightness obtained by dividing the source’s luminous flux by the consumption of its energy. noun 1. the efficiency of polychromatic radiation in producing a visual sensation. It is the […]

  • Luminous-emittance

    noun, Optics. 1. luminous flux emitted per unit area.



  • Luminous-energy

    noun 1. 1 (def 2a). noun 1. energy emitted or propagated in the form of light; the product of a luminous flux and its duration, measured in lumen seconds Qv

  • Luminous exitance

    noun 1. 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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