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What is Dimensional formula of lumen?
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What is Dimensional formula of lumen?
Lumens are related to lux in that one lux is one lumen per square meter. 1 lm = 1 cd ⋅ sr. A full sphere has a solid angle of 4π steradians, so a light source that uniformly radiates one candela in all directions has a total luminous flux of 1 cd × 4π sr = 4π cd⋅sr ≈ 12.57 lumens.
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What is Dimensional formula of lumen?
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