| lumen |
a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions a cavity or passage in a tubular organ; "the lumen of the intestine"
출처: wordnet.princeton.edu/perl/webwn
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| lumen |
In physics, specifically photometry (optics), the lumen (symbol: lm) is the SI derived unit of luminous flux. It is the amount of light that falls on a unit spherical area at unit distance from a source of one candela. In steradians this is equivalent to the amount of light that falls on a unit solid angle from a light source of one candela. Alternatively, one lumen is the total light produced by an isotropic light source of (1/4π) candelas. ...
출처: en.wikipedia.org/wiki/Lumen_(unit)
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| lumen |
In nematodes: Triradiate canal or duct of the esophagus. (14) In fungi: The space bounded by tissue or wall, as the central cavity of a cell. (17)
출처: ppathw3.cals.cornell.edu/glossary/Defs_L.htm
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| lumen |
An enclosed space bounded by an epithelial membrane; for example, the lumen of the gut.
출처: science.education.nih.gov/supplements/nih1/cancer/...
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| lumen |
The hollow cavity of a blood vessel or other tubular organ.
출처: www.clevelandclinic.org/heartcenter/pub/glossary/l...
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