foot-lambert


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foot-lam·bert

(fo͝ot′lăm′bərt)
n. Abbr. fL
A unit of luminance equal to 1/π candela per square foot.

foot-lambert

n
(Units) a former unit of luminance equal to the luminance of a surface emitting or reflecting 1 lumen per square foot. A completely reflecting surface illuminated by 1 foot-candle has a luminance of 1 foot-lambert. Abbreviation: ft-L

foot′-lam`bert



n.
a unit of luminance equal to the luminance of a surface emitting a luminous flux of one lumen per square foot.
[1920–1925]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.foot-lambert - a former luminance unit equal to one lumen per square foot
luminance unit - a measure of luminance
References in periodicals archive ?
Calibration units include nit (cd/[m.sup.2]), lumens, lux, cd and foot-lamberts. All products feature NIST traceable calibration, carried out in Gamma's ISO 17025 NVLAP accredited laboratory.
The GSX theater system at the Peoria Riverfront Museum will deliver up to 6 foot-lamberts (ftL.) of brightness in Giant Screen 3D mode in 4:3 aspect ratio; a 3D image at least twice as bright when compared to alternative Giant Screen Cinema systems.