a unit of illumination, equal to one lumen per square foot (10.764 lux), or the amount of light from a source of one candela directly thrown on a square foot of surface at a distance of one foot: abbrev. fc
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Abbr. fc or ft-c
A unit of measure of the intensity of light falling on a surface, equal to one lumen per square foot and originally defined with reference to a standardized candle burning at one foot from a given surface.