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Steradian

From Encyclopedia of Mathematics
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A unit of measurement of a solid angle. A steradian is the solid angle that cuts out on a sphere a surface described around the vertex of the angle of area equal to the square of the radius of the sphere. A complete sphere forms a solid angle equal to . Denoted by ster.

How to Cite This Entry:
Steradian. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Steradian&oldid=31703
This article was adapted from an original article by BSE-3 (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article