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| luminance (photometric brightness; the luminous intensity of any surface in a given direction per unit of projected area of the surface as viewed from that direction; units: expressed in candles per unit of area; stilb, sb: equal to 1 c/cm2, apostilb, asb: equal to 1/π • c/m²; lambert, L: equal to 1/π • c/cm²; foot-lambert, ft-L: equal to 1/π - c/ft²); photometric brightness; brightness (photometry) | |||
| brightness | |||
| luminance; surface brightness | |||
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Flachenhelligkeit : 2 短语, 1 学科 |
| 光学（物理学分支） | 2 |