Steradian_cone_and_cap.svg

Description Diagram showing a section through the centre of a cone (1) subtending a solid angle of 1 steradian in a sphere of radius r , along with the spherical "cap" (2). The fact that the external surface of the cap has an area of r 2 is shown. Note that this applies only if the solid angle of the cone is exactly 1 steradian.
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This W3C-unspecified vector image was created with Inkscape .
Author Inductiveload
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Public domain I, the copyright holder of this work, release this work into the public domain . This applies worldwide.
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inception

30 September 2007

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