explain solid angle

Asked by  | 9th Jul, 2008, 01:33: PM

Expert Answer:

The solid angle, Ω, is the angle in three-dimensional space that an object subtends at a point. It is a measure of how big that object appears to an observer looking from that point. For instance, a small object nearby could subtend the same solid angle as a large object far away. The solid angle is proportional to the surface area, S, of a projection of that object onto a sphere centered at that point, divided by the square of the sphere's radius, R

Answered by  | 10th Jul, 2008, 11:21: AM

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