spheroid

Also known as ellipsoid of revolution, rotational ellipsoid

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~9 min read

Encyclopedic overview

14 sections

Contents

Equation
Properties
Circumference
Area
Volume
Curvature
Aspect ratio
Occurrence and applications
Oblate spheroids
Prolate spheroids
Dynamical properties
See also
References
External links

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A spheroid, also known as an ellipsoid of revolution or rotational ellipsoid, is a quadric surface obtained by rotating an ellipse about one of its principal axes; in other words, an ellipsoid with two equal semi-diameters. A spheroid has circular symmetry.

Excerpted from Wikipedia’s “spheroid” article, available under the CC BY-SA 4.0 licence.