Posted by **abhi** on Monday, June 11, 2012 at 12:42am.

what is steradian?

- physics -
**drwls**, Monday, June 11, 2012 at 1:44am
A steradian is a measure of solid angle.

Imagine that you are at the center of a hollow sphere of radius R. Now consider an area A of that sphere. Divide that area by R^2 and you have the solid angle subtended by A, in steradians.

A full sphere subtends a solid angle of 4 pi steradians, from a point inside

- physics -
**alisha**, Monday, June 11, 2012 at 5:19am
A steradian is a measure of solid angle.

Imagine that you are at the center of a hollow sphere of radius R. Now consider an area A of that sphere. Divide that area by R^2 and you have the solid angle subtended by A, in steradians.

A full sphere subtends a solid angle of 4 pi steradians, from a point inside

- physics -
**drwls**, Monday, June 11, 2012 at 8:30am
Do I detect an echo?

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