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LUMINANCE

 - 4 dictionary results
Light & Color Instruments
Instruments for measuring light and color of displays, LED's & coatings
www.markettechinc.net

lu⋅mi⋅nance

  [loo-muh-nuhns]
Use LUMINANCE in a Sentence
–noun
1. the state or quality of being luminous.
2. Also called luminosity. the quality or condition of radiating or reflecting light: the blinding luminance of the sun.
3. Optics. the quantitative measure of brightness of a light source or an illuminated surface, equal to luminous flux per unit solid angle emitted per unit projected area of the source or surface.
Origin:
1875–80; < L lūmin- (s. of lūmen) light + -ance
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Light & Color Instruments
Instruments for measuring light and color of displays, LED's & coatings
www.markettechinc.net
lu·mi·nance   (lōō'mə-nəns)   
n.  

  1. The condition or quality of being luminous.

  2. Physics The intensity of light per unit area of its source.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: lu·mi·nance
Pronunciation: 'lü-m&-n&n(t)s
Function: noun
1 : the quality or state of being luminous
2 : the luminous intensity of a surface in a given direction per unit of projected area luminance required to distinguish circles from squares of comparable area is muchhigher than that needed to detect either alone —D. D. Michaels>
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Computing Dictionary

luminance
brightness

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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