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luminous flux unit

Definitions of luminous flux unit
  1. noun
    a measure of luminous flux per unit area
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    types:
    lm, lumen
    a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions
    type of:
    light unit
    a measure of the visible electromagnetic radiation
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