File:Illuminance_Diagram.tif · Wikimedia Commons · See Wikimedia Commons
ความส่องสว่าง (ทัศนศาสตร์)
Sign in to savealt=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