Definitions of illumination unit
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a measure of illumination
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types:
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footcandle
a unit of illuminance on a surface that is everywhere 1 foot from a point source of 1 candle
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L, lambert
a cgs unit of illumination equal to the brightness of a perfectly diffusing surface that emits or reflects one lumen per square centimeter
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lux, lx
a unit of illumination equal to 1 lumen per square meter; 0.0929 foot candle
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phot
a unit of illumination equal to 1 lumen per square centimeter; 10,000 phots equal 1 lux
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type of:
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light unit
a measure of the visible electromagnetic radiation
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