 | Mrs. Lincoln Phelps, Phelps (Mrs) - Physics - 1840 - 234 pages
...either oblono- or oblate. The earth is an oblate spheroid, being flattened at the poles. A spheroid is formed by the revolution of an ellipse about one of its axes. Spheroids are sometimes irregular in their forms. Spiral. A curve like a watch-spring. It may be circular,... | |
 | James Renwick - Chemistry - 1840 - 462 pages
...solid figure formed by the rotation of a semicircle about its diameter. SPHEROID, -AL ; a solid figure, formed by the revolution of an ellipse about one of its axes ; hence it is sometimes called an ellipsoid ; the spheroid will be oblate or prolate, according as... | |
 | James Renwick - Chemistry - 1845 - 456 pages
...solid figure formed by the rotation of a semicircle about its diameter. SPHEEOID, -AL ; a solid figure, formed by the revolution of an ellipse about one of its axes ; hence it is sometimes called an ellipsoid ; the spheroid will be oblate or prolate, according as... | |
 | William Somerville Orr - Science - 1854 - 534 pages
...• V = m"7t — - ir7i3 = • Yl. 15. To find ike Volume of a Spheroid. DEF. A spheroid is a figure formed by the revolution of an ellipse about one of its axes ; if about the major axis it is called a prolate spheroid, if about its minor axis it is called an... | |
 | Benjamin Greenleaf - Arithmetic - 1857 - 452 pages
...till the two ends meet ; as ACD B. 664. A spheroid is a figure resembling a sphere, and which may be formed by the revolution of an ellipse about one of its axes; as AECBDF A. If the ellipse revolves about its longer or transverse axis or diameter, the spheroid... | |
 | Benjamin Greenleaf - Arithmetic - 1858 - 458 pages
...till the two ends meet ; as ACD B. 664 1 A spheroid is a figure resembling a sphere, and which may be formed by the revolution of an ellipse about one of its axes ; as AECBDF A. If the ellipse revolves about its longer or transverse axis or diameter, the spheroid... | |
 | Benjamin Greenleaf - Arithmetic - 1858 - 472 pages
...till the two ends meet ; as ACD B. 664 1 A spheroid is a figure resembling a sphere, and which may be formed by the revolution of an ellipse about one of its axes; asAECBDFA. If the ellipse revolves about its longer or transverse axis or diameter, the spheroid is... | |
 | Edward Brooks - Arithmetic - 1877 - 528 pages
...having a circumference of 15.7085 inches. Ans. 24.05+cu. inTHE SPHEKOID 1O55. A Spheroid is a volume formed by the revolution of an ellipse about one of its axes. 1O5O. A revolution about the longer axis forms a prolate spheroid ; about the shorter axis, an oblate... | |
 | Robert M. Ferguson - Electricity - 1882 - 410 pages
...results. In the case of a sphere, the density is the same at every point of its surface. In an ellipsoid formed by the revolution of an ellipse about one of its axes, the densities at the extremities of the two axes are proportional to the axes — consequently there... | |
 | Swan Moses Burnett - Astigmatism - 1887 - 274 pages
...will defer its consideration in detail until we treat of irregular astigmatism. §15. Those spheroids formed by the revolution of an ellipse about one of its axes are sometimes called bi-axial ellipsoids in order to distinguish them from another form of ellipsoid... | |
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... the spheroid will be oblate or prolate, according as the revolution is performed about the minor or major axis of the ellipse. 
