| lumen |
The central hole in a crinoid columnal.
출처: www.kgs.ku.edu/Publications/ancient/vocab.html
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|---|---|
| lumen |
A measurement of light output from a lamp, tube, or bulb.
출처: www.uwsp.edu/cnr/wcee/keep/Mod1/Unitall/definition...
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| lumen |
A unit of luminous flux. The lumen is equal to the luminous flux radiated into a unit solid angle (steradian) from a small source having a luminous intensity of one candle. An ideal source possessing an intensity of one candle in every direction would radiate a total of 46 lumens.
출처: www.telemet.com/weather_gloss_l.htm
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| lumen |
The unit of measure for light output of a projector. Different manufacturers may rate their projectors' light output differently. "Peak lumens" is measured by illuminating an area of about 10% of the screen size in the center of the display. This measurement ignores the reduction in brightness at the sides and corners of the screen. ...
출처: www.pricedrightllc.com/id25.html
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| lumen |
The quantity of luminous flux emitted within a unit solid angle (one steradian) by a point source with one candella intensity in all directions.
출처: lightingdesignlab.com/library/glossary.htm
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