Steradian (sr) ○◂｜appendage｜___｜20260628174208-01-•

steradian	…
A graphical representation of two different steradians. The sphere has radius r, and in this case the area A of the highlighted spherical cap is r${}^2$. The solid angle Ω equals [A/r${}^2$] sr which is 1 sr in this example. The entire sphere has a solid angle of 4π sr.	…
General information	…
Unit system	SI
Unit of	solid angle
Symbol	sr
Conversions	…
1 sr in …	… is equal to …
SI base units	1 m${}^2$/m${}^2$
square degrees	⁠180${}^2$/π${}^2$⁠ deg${}^2$ ≈ 3282.8064 deg${}^2$

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