DERIVEDUNIT: steradianBack to Index
- 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.
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