 | John Farrar - 1822 - عدد الصفحات: 244
...length of 360°, or the wholc circumference of the earth, considered as a sphere. By performing similar operations in different latitudes, we obtain the length...the observations and calculations above referred to. . 169. It will be readily seen, that, where a triangle is formed by means of signals placed upon the... | |
 | John Farrar - 1822 - عدد الصفحات: 270
...the earth, considered as a sphere. By performing similar operations in different latitudes, we ohtain the length of degrees in those latitudes, and thence...the observations and calculations above referred to. 169. It will be readily seen, that, where a triangle is formed by means of signals placed upon the... | |
 | William Galbraith - 1827 - عدد الصفحات: 412
...axis. Capacity. Multiply the base by its height, half the product is the content. 7- Spheroid, or solid formed by the revolution of an ellipse about one of its axes. No of Sides. Names. Multipliers for areas. Radius of ci rcum. circle. Factors for sides. 3 Trigon 0.4330127... | |
 | John Farrar - 1833 - عدد الصفحات: 276
...length of 360°, or the whole circumference of the earth considered as a sphere. By performing similar operations in different latitudes, we obtain the length...the observations and calculations above referred to. 169. It will be readily seen, that, where a triangle is formed by means of signals placed upon the... | |
 | Charles Bonnycastle - 1834 - عدد الصفحات: 678
...Fie. 84i. faces are then said to be " of revolution." The ellipsoid of revolution, or the spheroid, is formed by the revolution of an ellipse about one of its axes ; if round the major axe pq, the surface is termed a " prolate" spheroid, or ellipsoid of revolution... | |
 | William Galbraith - 1834 - عدد الصفحات: 454
...axis. Capacity. Multiply the base by its height, half the product is the content. 7- Spheroid, or solid formed by the revolution of an ellipse about one of its axes. Capacity. Multiply the square of the revolving axis by the fixed axis, and the product by 0.5236, the... | |
 | Mary Somerville - 1834 - عدد الصفحات: 390
...by the rotation of a semi-circle about its diameter. Spheroid of revolution, or Ellipsoid. A solid formed by the revolution of an ellipse about one of its axes. The spheroid will be oblate or prolate, according as the revolution is performed about the minor or... | |
 | Mary Somerville - 1834 - عدد الصفحات: 666
...formed by the rotation of a semicircle about its diameter. Spheroid of revolution, or Ellipsoid. A solid formed by the revolution of an ellipse about one of its axes. The spheroid will be oblate or prolate, according as the revolution is performed about the minor or... | |
 | John Frederic Daniell - 1839 - عدد الصفحات: 606
...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 the... | |
 | James Renwick - 1840 - عدد الصفحات: 412
...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... | |
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Knowing therefore the absolute distance A x, and the difference of latitude of these two points, we readily find the length of a degree, and thence the length of 360°, or the whole circumference of the earth considered as a sphere. By performing similar... 
