Phot 788338 217275168 2008-06-05T10:07:33Z Yerpo 4373810 [[:sl:Fot]] {{For|the 9th-century theologian and scholar|Patriarch Photius I of Constantinople}} A '''phot''' ('''ph''') is a [[photometry (optics)|photometric]] unit of [[illuminance]], or [[luminous flux]] through an area. It is not an [[SI]] unit, but is equivalent to 10000 [[lux]]. Metric equivalence: :<math>1\ \mathrm{phot} = 1\ \frac{\mathrm{lumen}}{\mathrm{centimeter}^2} = 10000\ \frac{\mathrm{lumens}}{\mathrm{meter}^2} = 10000\ \mathrm{lux} = 10\ \mathrm{kilolux}</math> Metric dimensions: :illuminance = [[luminous intensity]] × [[solid angle]] / length<sup>2</sup> == See also == *[[Illuminance]] *[[Lumen]] *[[Lux]] *[[Photometry (optics)]] *[[Light]] == References == * Knowledgedoor, LLC (2005). [http://www.knowledgedoor.com/1/Library_of_Units_and_Constants/Quantity_Index/illuminance.htm Library of Units and Constants: Illuminance Quantity]. Retrieved [[2006-07-21]]. * [http://www.convertthis.com/converters/illuminance.aspx Illuminance Converter]. Retrieved [[2006-07-21]]. [[Category:Photometry]] [[Category:Units of illuminance]] [[Category:Non-SI metric units]] [[de:Phot]] [[fr:Phot]] [[nl:Phot]] [[ja:フォト]] [[pt:Phot]] [[sl:Fot]] [[uk:Фот]]