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where
where
[[File:Lv.jpg]] is the luminance ([http://en.wikipedia.org/wiki/Square_metre cd/m2]),
[[File:Lv.jpg]] is the luminance ([https://en.wikipedia.org/wiki/Square_metre cd/m2]),
[[File:F_luminous.jpg]] is the luminous flux or luminous power ([http://en.wikipedia.org/wiki/Lumen_(unit) lm]),
[[File:F_luminous.jpg]] is the luminous flux or luminous power ([https://en.wikipedia.org/wiki/Lumen_(unit) lm]),
[[File:Phi.jpg]] is the angle between the surface normal and the specified direction,
[[File:Phi.jpg]] is the angle between the surface normal and the specified direction,
[[File:A_luminous.jpg]] is the area of the surface ([http://en.wikipedia.org/wiki/Square_metre m2]), and
[[File:A_luminous.jpg]] is the area of the surface ([https://en.wikipedia.org/wiki/Square_metre m2]), and
[[File:Omega.jpg]] is the solid angle ([http://en.wikipedia.org/wiki/Steradian sr]).
[[File:Omega.jpg]] is the solid angle ([https://en.wikipedia.org/wiki/Steradian sr]).
==References==
==References==
# "Luminance". Lighting Design Glossary. Retrieved on Apr. 13, 2009.
# "Luminance". Lighting Design Glossary. Retrieved on Apr. 13, 2009.
==External links==
==External links==
* A Kodak guide to [http://www.kodak.com/cluster/global/en/consumer/products/techInfo/am105/am105kic.shtml Estimating Luminance and Illuminance] using a camera's exposure meter. Also available in [http://www.kodak.com/cluster/global/en/consumer/products/techInfo/am105/am105kic.pdf PDF form].
* A Kodak guide to [https://www.kodak.com/cluster/global/en/consumer/products/techInfo/am105/am105kic.shtml Estimating Luminance and Illuminance] using a camera's exposure meter. Also available in [https://www.kodak.com/cluster/global/en/consumer/products/techInfo/am105/am105kic.pdf PDF form].
[[Category: General Reference]]
[[Category: General Reference]]
[[Category: Physics]]
[[Category: Physics]]
