| luminescence |
the production of light by animals or plants
출처: giantsquid.msstate.edu/Background/glossary.html
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| luminance |
This term is used to describe the specific light which comes off the surface whether off a filament, light bulb, lens, louver, tabletop, etc. Luminance varies with both the direction at which you view the surface and its gloss characteristics. Luminance is measured in candela per square foot.
출처: www.energy.state.or.us/bus/light/glossary.htm
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| luminous flux |
Unit: lm CIE. Quantity derived from radiant flux by evaluating the radiation according to its action upon the CIE standard photometric observer. For photopic vision:
출처: www.satel-light.com/guide/glosetol.htm
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| luminous flux |
Radiant flux evaluted in terms of a standardized visual response. Measured in lumens, . where The above definition of luminous flux is for photopic vision and has the value . For scotopic vision is replaced by and is replaced by .
출처: www.cs.utah.edu/~kuzimmer/IES/section3.2.html
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| luminous intensity |
The luminous flux per unit solid angle in a certain direction. Measured in .
출처: www.cs.utah.edu/~kuzimmer/IES/section3.2.html
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