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lumen
Symbol:  lm 
Category:  Luminous flux 
SI Equivalent:  1 cd-sr
Dimension:  JW 
System:  SI 
 
Notes
Lumen is a unit of luminous flux which is equal to the amount of light streaming out through 1 steradian from a point source with a uniform intensity of 1 candela.
Convert     lm  
1 lm =
Luminous flux
  Symbol Unit Name
7.95775×10-2    candlepower (spherical) 
Glossary