File:Illuminance_Diagram.tif · Wikimedia Commons · See Wikimedia Commons
alt=Illuminance diagram with units and terminology.|thumb|372x372px|Illuminance diagram with units and terminology In photometry, illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface, wavelength-weighted by the luminosity function to correlate with human brightness perception. Similarly, luminous emittance is the luminous flux per unit area emitted from a surface. Luminous emittance is also known as luminous exitance.
Key facts
- Physical quantity.name
- Illuminance
- Physical quantity.unit
- lux
- Physical quantity.otherunits
- phot, foot-candle
- Physical quantity.baseunits
- cd·sr·m−2
- Physical quantity.dimension
- \mathsf{L}^{-2} \mathsf{J}
via Wikipedia infobox
Wikidata facts
Show 3 more facts
- different from
- luminance
- Commons category
- Illuminance
- maintained by WikiProject
- WikiProject Mathematics
Sources (3)
via Wikidata · CC0
Article · 日本語
照度（しょうど、英: illuminance）とは、物体の表面を照らす光の明るさを表す物理量である。照度は人間の感じる量を表す心理物理量のひとつである。国際単位系（SI）における単位はルクス（記号: lx）またはルーメン毎平方メートル（記号: lm m−2）が用いられる。照度は光束発散度と同じ次元を持つが、光束発散度は平面状の光源の指標であり、照度は照射された側の指標を表す。
Abstract from DBpedia / Wikipedia · CC BY-SA