foot-candle

noun
foot-can·​dle | \ ˈfu̇t-ˈkan-dᵊl How to pronounce foot-candle (audio) \

Definition of foot-candle

: a unit of illuminance on a surface that is everywhere one foot from a uniform point source of light of one candle and equal to one lumen per square foot

First Known Use of foot-candle

1906, in the meaning defined above

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The first known use of foot-candle was in 1906

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footcandle

noun
foot·​can·​dle | \ -ˈkan-dᵊl How to pronounce footcandle (audio) \

Medical Definition of footcandle

: a unit of illuminance on a surface that is everywhere one foot from a uniform point source of light of one candle and equal to one lumen per square foot

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