 | Joseph Harris - Astronomical models - 1732 - 236 pages
...having every part of its Surface equally diftant from a Point within it, called its Center ; and it may be conceived to be formed by the Revolution of a Semicircle round its Diameter. Any Circle pafling through the Center of the Sphere, thereby dividing into two... | |
 | Mathematics - 1801 - 658 pages
...point of which is equally distant from a point within, call- LJL!| ed the centre. The sphere may -jj', be conceived to be formed by the revolution of a semicircle about its diameter, which remains fixed. 9. The axis of a solid is a line, drawn from the midd« of one end to the middle of the opposite end... | |
 | David Steel - 1805 - 392 pages
...vertex. A Sphere, or globe, is a solid bounded by one uniform convex surface, every point of which is equally distant from a point within, called the...centre. The sphere may be conceived to be formed by the rotation of a semi-circle about its diameter. The.i4.ra of a solid is a line, or imaginary line, drawn... | |
 | Samuel Webber - Mathematics - 1808 - 520 pages
...or hexagonal, 8. A sphere is a solid, bounded by one continued convex surface, every point of which is equally distant from a point within, called the...semicircle about its diameter, which remains fixed. 9. The axis of a solid, is aline drawn from the middle of one end to the middle of the opposite end... | |
 | Francis Nichols - Plane trigonometry - 1811 - 162 pages
...uniform round surface, which is every where equally distant from a point within it called the centre. A sphere may be conceived to be formed by the revolution...of a semicircle about its diameter, which remains unmoved, and is called the axis of the sphere. 2. A diameter of a sphere is a straight line passing... | |
 | Adrien Marie Legendre - Geometry - 1819 - 574 pages
...DEFTNITIONS. 437. A sphere is a solid terminated by a curved surface all the points of which are equally distant from a point within called the centre. The sphere may be conceived to be generated by the revolution of a semicircle I LIE (Jig. 220) about its diameter D'E ; Fig. for the... | |
 | William Hawney - Geometry - 1820 - 336 pages
...body, every part of its surface being equally distant from a point within, called its centre ; and it may be conceived to be formed by the revolution of a semicircle round its diameter. To find the Solidity. RULE I. Multiply the cube of the diameter by .5236, and the... | |
 | Edward Bruce (bookseller.) - 1821 - 418 pages
...globe is a perfectly round body; its middle point is called the centre. A globe, or sphere, is a solid, formed by the revolution of a semicircle about its diameter, which remains fixed. The axis of a sphere is the right line about which the semicircle revolves. 6. A great circle divides... | |
 | Rev. John Allen - Astronomy - 1822 - 516 pages
...sphere, is a right line drawn from the centre to any part of its surface. 16. When a sphere is supposed to be formed by the revolution of a semicircle about its diameter, which remains unmoved, the diameter, about which the semicircle revolves, is called, the axis of the sphere. 17.... | |
 | Adrien Marie Legendre, John Farrar - Geometry - 1825 - 294 pages
...DEFINITIONS. ' 437. A sphere is a solid terminated by a curved surface all the points of which are equally distant from a point within called the centre. The sphere may be conceived to be generated by the revolution of a semicircle DAE (fig. 220) about its diameter DE ; Fig. 220. for the... | |
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A sphere is a solid figure described by the revolution of a semicircle about its diameter, which remains fixed. 
