WOLFRAM LANGUAGE FEATURED EXAMPLE

Curve in Spherical Coordinates

The following is a curve expressed in spherical coordinates. It starts at the origin and moves to the surface of the unit sphere.

    
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A plot of the curve inside the unit sphere. Notice the coloring, which indicates it starts quite slowly and then speeds up as it gets closer to the surface:
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Compute the length of the curve. It is about 11.2 radii:
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