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what is" Iuminous flux"
2013-04-08 15:10:25


One lumen is defined as the luminous flux of light produced by a light source that emits one candela of luminous intensity over a solid angle of one steradian. 

In photometry, luminous flux or luminous power is the measure of the perceived power of light.In fact.Luminous flux is not used to compare brightness, as this is a subjective perception which varies according to the distance from the light source.


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