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EU:  STERADIAN

Status: STD 2005/06/07
Code: 214
Symbol: sr
EQ label: SOLID_ANGLE
 
Quantities associated with this Unit
Quantity: solid angle
Concept definition: A/r2, where A is the area of the included surface of a sphere in a cone with its apex at the centre of the sphere [ISO 80000-3:2006, item 3-3] and r is the radius of the sphere [ISO 80000-3:2006, item 3-1.5].
1 sr = 1 (m2/(m2 = 1
A complete angle over all space (full sphere) is 4π sr.
 
Reference type: PR
Reference: [ISO 80000-3:2006, item 3-6.a]
Supplemental references: [ISO 80000-1:2009, Table 2, "solid angle"]

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