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- Illuminance abstract "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.In SI derived units these are measured in lux (lx) or lumens per square metre (cd·sr·m−2). In the CGS system, the unit of illuminance is the phot, which is equal to 10000 lux. The foot-candle is a non-metric unit of illuminance that is used in photography.Illuminance was formerly often called brightness, but this leads to confusion with other uses of the word. "Brightness" should never be used for quantitative description, but only for nonquantitative references to physiological sensations and perceptions of light.The human eye is capable of seeing somewhat more than a 2 trillion-fold range: The presence of white objects is somewhat discernible under starlight, at 5×10−5 lux, while at the bright end, it is possible to read large text at 108 lux, or about 1000 times that of direct sunlight, although this can be very uncomfortable and cause long-lasting afterimages.[citation needed]".
- Illuminance thumbnail Lux_meter.jpg?width=300.
- Illuminance wikiPageExternalLink illuminance.aspx.
- Illuminance wikiPageExternalLink illuminance.htm.
- Illuminance wikiPageExternalLink am105kic.pdf.
- Illuminance wikiPageExternalLink am105kic.shtml.
- Illuminance wikiPageID "773153".
- Illuminance wikiPageRevisionID "590797245".
- Illuminance hasPhotoCollection Illuminance.
- Illuminance subject Category:Photometry.
- Illuminance subject Category:Physical_quantities.
- Illuminance comment "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.In SI derived units these are measured in lux (lx) or lumens per square metre (cd·sr·m−2).".
- Illuminance label "Beleuchtungsstärke".
- Illuminance label "Emitancia luminosa".
- Illuminance label "Illuminamento".
- Illuminance label "Illuminance".
- Illuminance label "Iluminamento".
- Illuminance label "Natężenie oświetlenia".
- Illuminance label "Verlichtingssterkte".
- Illuminance label "Éclairement lumineux".
- Illuminance label "Освещённость".
- Illuminance label "استضاءة".
- Illuminance label "照度".
- Illuminance label "照度".
- Illuminance sameAs Intenzita_osvětlení.
- Illuminance sameAs Beleuchtungsstärke.
- Illuminance sameAs Emitancia_luminosa.
- Illuminance sameAs Éclairement_lumineux.
- Illuminance sameAs Illuminamento.
- Illuminance sameAs 照度.
- Illuminance sameAs 조도_(광학).
- Illuminance sameAs Verlichtingssterkte.
- Illuminance sameAs Natężenie_oświetlenia.
- Illuminance sameAs Iluminamento.
- Illuminance sameAs m.03bbc3.
- Illuminance sameAs Q194411.
- Illuminance sameAs Q194411.
- Illuminance wasDerivedFrom Illuminance?oldid=590797245.
- Illuminance depiction Lux_meter.jpg.
- Illuminance isPrimaryTopicOf Illuminance.
