foot-candle or foot·can·dle [foo t-kan-dl] ExamplesWord Origin noun Optics.
- a unit of illuminance or illumination, equivalent to the illumination produced by a source of one candle at a distance of one foot and equal to one lumen incident per square foot. Abbreviation: FC
Origin of foot-candle First recorded in 1905–10 Examples from the Web for foot-candle Historical Examples of foot-candle
A lumen is the quantity of light which falls on one square foot if the intensity of illumination is one foot-candle.
M. Luckiesh
British Dictionary definitions for foot-candle foot-candle noun
- a former unit of illumination, equal to one lumen per square foot or 10.764 lux
foot-candle in Medicine foot-candle n.
- A unit of measure of the intensity of light falling on a surface equal to 1 lumen per square foot. It has been replaced in the International System by the candela (1 lumen per square meter).