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Phot

Phot

A phot is a photometric unit of illuminance, or luminous flux through an area. It is not an SI unit but rather is associated with the older centimetre–gram–second system of units. The name was coined by André Blondel in 1921. Wikipedia
1 ph in: is equal to
SAE units: 929 fc
SI derived unit: 10000 lx
Symbol: ph
Unit of: Illuminance
Unit system: CGS units