spherical-coordinates

spherical coordinates

noun Mathematics.
a system of coordinates for locating a point in space by the length of its radius vector and the angles this vector makes with two perpendicular polar planes.

Origin:
1860–65

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spherical coordinates
 
pl n
three coordinates that define the location of a point in three-dimensional space in terms of the length r of its radius vector, the angle, θ, which this vector makes with one axis, and the angle, φ, made by a second axis, perpendicular to the first, with the plane containing the first axis and the point. Usually written (r, θ, φ)

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