 | John BRINKLEY (Bishop of Cloyne.) - Astronomy - 1836 - 334 pages
...if the earth had been originally in a fluid state, its form would be accurately that of a spheroid, generated by the revolution of an ellipse about its minor axis. The proportion of its diameters would then be readily investigated from a comparison of the lengths of... | |
 | George Poulett Scrope - Geology - 1858 - 362 pages
...accumulate round the margin of the orifice into a hill, necessarily approaching more or less in figure to the solid which would be generated by the revolution of an obtuse scalene triangle round one of the angles of its base; and this hill is called a volcanic cone,... | |
 | George Poulett Scrope - Geology - 1858 - 344 pages
...accumulate round the margin of the orifice into a hill, necessarily approaching more or less in figure to the solid which would be generated by the revolution of an obtuse scalene triangle round one of the angles of its base ; and this hill is called a volcanic cone,... | |
 | William Chauvenet - 1864 - 720 pages
...to apply. The figure of the earth is very nearly that of an oblate spheroid, that is, an ellipsoid generated by the revolution of an ellipse about its minor axis. The section made by a plane through the earth's axis is nearly an ellipse, of which the major axis is the... | |
 | William Chauvenet - Astronomical instruments - 1864 - 726 pages
...to apply. The figure of the earth is very nearly that of an oblate spheroid, that is, an ellipsoid generated by the revolution of an ellipse about its minor axis. The section made by a plane through the earth's axis is nearly an ellipse, of which the major axis is the... | |
 | Philip Thomas Main - Astronomy - 1868 - 224 pages
...have stated that the Earth is almost a sphere : its exact figure is an oblate spheroid, i. & a figure generated by the revolution of an ellipse about its minor axis. The minor axis of the ellipse, or the shortest diameter of the Earth, is about 7900 miles, and is less... | |
 | Alexander Charles Ewald - 1870 - 386 pages
...earth's curvature. The shape of the earth is very nearly that of an oblate spheroid, that is, the solid generated by the revolution of an ellipse about its minor axis. The earth has a continual motion of rotation, which is performed once in every twenty-four sidereal hours,... | |
 | Charles Joyce White - Astronomy - 1872 - 300 pages
...at the extremities of which the curvature is the greatest. The form of the earth, then, is that of the solid which would be generated by the revolution of an ellipse about its minor axis, which solid is called in Geometry an oblate ttpheroid. A more common but less accurate name given to... | |
 | De Volson Wood - Geometry, Analytic - 1882 - 360 pages
...— (5) which is the equation of the surface of the prolate ellipsoid. 232. The Oblate Ellipsoid may be generated by the revolution of an ellipse about its minor axis. Let the axfs of s be the axis of revolution. Then proceeding as before, we have (6) 233. The Ellipsoid... | |
 | Engineering - 1880 - 546 pages
...Written for VAN NOSTRAND'S MAGAZINE. II. — THE EARTH AS A SPHEROID. As an oblate spheroid is a volume generated by the revolution of an ellipse about its minor axis, the equator and all the sections of the spheroid parallel to the equator are circles, and all sections... | |
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Since an oblate spheroid is generated by the revolution of an ellipse about its minor axis, the equator and all the sections of the spheroid parallel to the equator are circles, and all sections made by planes passing through the axis of revolution are... 
