Medical term:
Luma
lu·mi·nance
(lū'mi-nănts),The brightness of an object, expressed as the luminous flux per unit solid angle per unit projected area, measured in lamberts or in candelas per square meter.
[L. lumino, to light up, fr. lumen, light]
Farlex Partner Medical Dictionary © Farlex 2012
lu·mi·nance
(lū'mi-năns)The brightness of an object, expressed as the luminous flux per unit solid angle per unit projected area, measured in lamberts or in candelas per square meter.
[L. lumino, to light up, fr. lumen, light]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
luminance
Photometric term characterizing the way in which a surface emits or reflects light in a given direction. It is equal to the luminous intensity measured in a given direction divided by the area of this surface projected on a perpendicular to the direction considered. Symbol: L. Units: candela per square metre (SI unit); footlambert; lambert, etc. See brightness; candela per square metre; footlambert; lambert; lightness; millilambert; nit; photometry; SI unit.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
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- Lumachel
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