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Steradian
Conversions to other units
1 sr | 0.001 ksr (kilosteradians) | 0.07958 spheres
Conversions from other units
1 ksr | 1000 sr 1 sphere | 12.57 sr
Physical quantity
solid angle
projected solid angle
Unit type
SI derived: m^2 m^(-2) (meter^2 meter^(-2))
Common prefix forms
kilosteradian (ksr) | megasteradian (Msr) | gigasteradian (Gsr)
Unit system
in effect treated as quantity with unit one in SI
Basic unit dimensions
[angle]^2
Comparisons for 1 sr as solid angle
≈ 0.64 × solid angle subtended by one face of a regular octahedron from its center ( π/2 sr )
≈ 0.95 × solid angle subtended by one face of a regular dodecahedron from its center ( π/3 sr )
≈ 15000 × average solid angle subtended by the sun from the earth ( ≈ 6.8×10^-5 sr )