Definitions for illumination, unit of
This page provides all possible meanings and translations of the word illumination, unit of
The Standard Electrical Dictionary
Illumination, Unit of
An absolute standard of light received by a surface. Preece proposed as such the light received from a standard candle (see Candle, Standard) at a distance of 12.7 inches. The object of selecting this distance was to make it equal to the Carcel Standard (see Carcel), which is the light given by a Carcel lamp at a distance of one meter. From one-tenth to one-fiftieth this degree of illumination was found in gas-lighted streets by Preece, depending on the proximity of the gas lamps.
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"illumination, unit of." Definitions.net. STANDS4 LLC, 2015. Web. 28 Aug. 2015. <http://www.definitions.net/definition/illumination, unit of>.