DERIVEDUNIT: steradian

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  • PID: si:derivedunit:steradian
  • Definition: The steradian is the coherent unit for solid angle. One steradian is the solid angle subtended at the centre of a sphere by an area of the surface that is equal to the squared radius.
  • Source: SI Brochure 9th Ed. 2019, p 137
  • Status: Valid
  • Note: Like the radian, the steradian was formerly an SI supplementary unit.
  • Related Definitions
    • hasDerivedUnitSymbol -> sr
    • hasDerivedUnitInBaseSI -> m2/m2