 I deduced that the forces which keep the planets in their orbs must bo reciprocally as the squares of their distances from the centres about which they revolve; and thereby compared the force requisite to keep the moon in her orb with the force of gravity...  Britain's Heritage of Science - Page 50by Sir Arthur Schuster, Sir Arthur Everett Shipley - 1917 - 334 pagesFull view - About this book
 | Z. Bechler - 1982 - 264 pages
...too; in fact, on any body in the solar system).16 In statement (b), Newton later alleged that (i) he 'thereby compared the force requisite to keep the...force of gravity at the surface of the earth' and (ii) found them to agree 'pretty nearly'. With respect to (i), even apart from the fact that Newton... | |
 | Richard S. Westfall - 1983 - 934 pages
...must [be] reciprocally as the squares of their distances from the centers about wch they revolve: & thereby compared the force requisite to keep the Moon...the force of gravity at the surface of the earth, & found them answer pretty nearly. All this was in the two plague years of 1665-1666. For in those... | |
 | John Earman - 1983 - 494 pages
...seem to violate this additional stricture. Newton was able to test his gravitation law by comparing "the force requisite to keep the moon in her orb with...force of gravity at the surface of the earth" and finding them "to answer pretty nearly." By equating the centripetal force acting on the moon with gravitational... | |
 | I. Bernard Cohen - 1985 - 280 pages
...ft/sec 2 or gx 1000 cm/sec 2 . Newton said, in the autobiographical memorandum I have quoted, that he "compared the force requisite to keep the moon in...the force of gravity at the surface of the earth." in its orb." In one minute of time it will descend through the same distance that it does when this... | |
 | George Gamow - 1988 - 372 pages
...calculus], and in the same year I began to think of gravity extending to the orb of the Moon . . . and . . . compared the force requisite to keep the Moon in her...the force of gravity at the surface of the Earth. The rest of his scientific career was devoted to the development of the ideas conceived in Lincolnshire.... | |
 | Richard S. Westfall - 1994 - 356 pages
...must [be] reciprocally as the squares of their distances from the centers about \v*h they revolve: & thereby compared the force requisite to keep the Moon...the force of gravity at the surface of the earth, & found them answer pretty nearly. All this was in the two plague years of 1665-1666. For in those... | |
 | Ann Stewart Balakier, James J. Balakier - 1995 - 208 pages
...must [be] reciprocally as the squares of their distances from the centers about w* they revolve: & thereby compared the force requisite to keep the Moon...the force of Gravity at the surface of the earth, & found them answer pretty nearly.75 This principal was stated as Proposition XIII in Book Three of... | |
 | Sahotra Sarkar - 1996 - 434 pages
...sphere), from Kepler's rale ... I deduced that the forces which keep the planets in their Orbs must be reciprocally as the squares of their distances from the centres about which they revolve. . . . This MS., though familiar to some historians, was unknown to me in writing the preceding. It... | |
 | W. R. Clement - 1998 - 485 pages
...must [be] reciprocally as the squares of their distances from the centres about wcn they revolve & thereby compared the force requisite to keep the Moon...the force of gravity at the surface of the earth, & them answer pretty nearly. All this was in the two plague years of 1665-1666. For in those days I... | |
 | C. W. Groetsch - 1999 - 246 pages
...1665-66. He said of the time: I decided that the forces which keep the planets in their orbs must be reciprocally as the squares of their distances from the centres about which they revolve. Actually, the young Newton's derivation of the inverse-square law was based on a naive model of circular... | |
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