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Definitions of steradian
  1. noun
    the unit of solid angle adopted under the Systeme International d'Unites

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Definition that contains steradian
  • lm 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
  • 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
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