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- Spheroid abstract "A spheroid, or ellipsoid of revolution 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. If the ellipse is rotated about its major axis, the result is a prolate (elongated) spheroid, like an American football or rugby ball. If the ellipse is rotated about its minor axis, the result is an oblate (flattened) spheroid, like a lentil. If the generating ellipse is a circle, the result is a sphere.Because of the combined effects of gravitation and rotation, the Earth's shape is roughly that of a sphere slightly flattened in the direction of its axis. For that reason, in cartography the Earth is often approximated by an oblate spheroid instead of a sphere. The current World Geodetic System model uses a spheroid whose radius is 6,378.137 km at the equator and 6,356.752 km at the poles.The word spheroid originally meant an approximately spherical bodyand that is how it is used in some older papers on geodesy.In order to avoid confusion, spheroid should be defined as anellipsoid of revolution, if that is the intended meaning.".
- Spheroid thumbnail OblateSpheroid.PNG?width=300.
- Spheroid wikiPageID "82365".
- Spheroid wikiPageRevisionID "597419965".
- Spheroid hasPhotoCollection Spheroid.
- Spheroid subject Category:Quadrics.
- Spheroid subject Category:Surfaces.
- Spheroid comment "A spheroid, or ellipsoid of revolution 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. If the ellipse is rotated about its major axis, the result is a prolate (elongated) spheroid, like an American football or rugby ball. If the ellipse is rotated about its minor axis, the result is an oblate (flattened) spheroid, like a lentil.".
- Spheroid label "Elipsoida obrotowa".
- Spheroid label "Ellipsoïde de révolution".
- Spheroid label "Esferoide".
- Spheroid label "Esferoide".
- Spheroid label "Rotationsellipsoid".
- Spheroid label "Sferoide".
- Spheroid label "Sferoïde".
- Spheroid label "Spheroid".
- Spheroid label "Эллипсоид вращения".
- Spheroid label "سطح كروي".
- Spheroid label "回転楕円体".
- Spheroid label "類球面".
- Spheroid sameAs Sféroid.
- Spheroid sameAs Rotationsellipsoid.
- Spheroid sameAs Esferoide.
- Spheroid sameAs Esferoide.
- Spheroid sameAs Ellipsoïde_de_révolution.
- Spheroid sameAs Sferoid.
- Spheroid sameAs Sferoide.
- Spheroid sameAs 回転楕円体.
- Spheroid sameAs Sferoïde.
- Spheroid sameAs Elipsoida_obrotowa.
- Spheroid sameAs Esferoide.
- Spheroid sameAs m.0l4nr.
- Spheroid sameAs Q208395.
- Spheroid sameAs Q208395.
- Spheroid wasDerivedFrom Spheroid?oldid=597419965.
- Spheroid depiction OblateSpheroid.PNG.
- Spheroid isPrimaryTopicOf Spheroid.
