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ILLUMINATION UNIT
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
A measure of illumination
Classified under:
Nouns denoting quantities and units of measure
Hypernyms ("illumination unit" is a kind of...):
light unit (a measure of the visible electromagnetic radiation)
Hyponyms (each of the following is a kind of "illumination unit"):
footcandle (a unit of illuminance on a surface that is everywhere 1 foot from a point source of 1 candle)
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)
lux; lx (a unit of illumination equal to 1 lumen per square meter; 0.0929 foot candle)
phot (a unit of illumination equal to 1 lumen per square centimeter; 10,000 phots equal 1 lux)
