 | William Fordyce Mavor - 1816 - 462 pages
...same principle is extended through all matter. By pursuing this train of ideas, and comparing' tKe periods of the several planets with their distances from the sun, he found that if any power resembling gravity held them in their courses, its strength must decrease in a proportion to the increased... | |
 | Encyclopedias and dictionaries - 1816 - 778 pages
...this fpeculation, by comP-iring the periods of the feveral planets with their diftinceafrom the fun, he found, that if any power like gravity held them in their courfer, its Itrength inuft decreafe in the duplicate proportion of the mcreafe of diftance. This inquiry... | |
 | William Nicholson - Natural history - 1821 - 356 pages
...by the force of gravity, no doubt the primary planets are carried about the sun by the like power ; and by comparing the periods of the several planets...duplicate proportion of the increase of distance. This he concluded by supposing them to move in perfect circles, concentric to the sun, from which the orbits... | |
 | William Nicholson - Natural history - 1821 - 358 pages
...by the force of gravity, no doubt the primary planets are carried about the sun by the like power ; and by comparing the periods of the several planets...strength must decrease in the duplicate proportion of tlie increase of distance. This he concluded by supposing them to move in perfect circles, concentric... | |
 | Arminianism - 1850 - 698 pages
...round the sun by the like power ; and, by comparing the periods of the several planets with their mean distances from the sun, he found, that if any power like gravity held them in their courses, its intensity must decrease inversely as the square of their distances from the sun. He arrived at this... | |
 | Thomas Curtis (of Grove house sch, Islington) - 438 pages
...thought ; and pursuing this speculation, by comparing the periods of the several planets with tiieir distances from the sun, he found, that, if any power...duplicate proportion of the increase of distance. This enquiry gave rise to his writing the treatise which he published in 1687, under the name of Mathematical... | |
 | Lord Alexander Fraser Tytler Woodhouselee - World history - 1835 - 364 pages
...by the force of gravity, no doubt the primary planets are carried round the sun by the like power; and by comparing- the periods of the several planets...duplicate proportion of the increase of distance. Supposing, therefore, the power of gravity, when extended to the moon, to decrease in . the same proportion,... | |
 | Stephen Peter Rigaud - Physics - 1838 - 208 pages
...by the force of gravity, no doubt the primary planets are carried round the sun by the like power. And, by comparing the periods of the several planets...duplicate proportion of the increase of distance. This he concluded by supposing them to move in perfect circles concentrical to the sun, from which the orbits... | |
 | Lord Alexander Fraser Tytler Woodhouselee - World history - 1839 - 366 pages
...by the force of gravity-, no doubt the primary planets are carried round the sun by the like power; and by comparing the periods of the several planets...duplicate proportion of the increase of distance. Supposing, therefore, the power of gravity, when extended to the moon, to decrease in the same proportion,... | |
 | Joseph Denison - 1844 - 60 pages
...discovered gravitation as a principle pervading the solar system, " he found," says his biographer, " by comparing the periods of the several planets with their distances from the sun, that if any power like gravity held them in their courses, its strength must decrease in the duplicate... | |
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To make an estimate what might be the degree of this diminution, he considered with himself that, if the moon be retained in her orbit by the force of gravity, no doubt the primary planets are carried round the sun by the like power. And, by comparing... 
