SolidAngle

SolidAngle[p, {u1, ..., ud}] gives the solid angle at the point p and spanned by the vectors u1, ..., ud.

• SolidAngle[p, reg] gives the solid angle subtended by the region reg.

Examples

SolidAngle[{0, 0, 0}, {{1, 0, 0}, {0, 1, 0}, {0, 0, 1}}]

SolidAngle[{0, 0, 0}, Sphere[{1, 0, 0}, 0.5]]

Please visit the official Wolfram Language Reference for more details.