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footlambert (fL)

Footlambert (fL) is an illumination quantity emitted or reflected from diffuse surfaces.

Footlambert is used in projection. The higher the value, the brighter the projection. The footlambert is an obsolete illumination unit for luminous intensity that was used in the United States. 1 footlambert is equivalent to 1 candela per square foot, and this is equivalent to 3,426 candela per square meter (cd/sq m) or 3,426 nits.

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Englisch: footlambert - fL
Updated at: 16.02.2018
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