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footcandle

 - 3 dictionary results

foot-can⋅dle

  [foot-kan-dl]
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–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
Also, footcandle.

Origin:
1905–10
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Medical Dictionary

Main Entry: foot·can·dle
Pronunciation: -'kan-d&l
Function: noun
: a unit of illuminance on a surface that is everywhere onefoot from a uniform point source of light of one candle and equal to one lumen per square foot
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

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).

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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