foot-candle

or foot·can·dle

[foo t-kan-dl]

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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.
Artificial Light
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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

foot-candle in Medicine

foot-candle

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).