| 1977
...over equal areas in equal intervals of time. 3. The squares of the sidereal periods of any two planets **are proportional to the cubes of their mean distances from the sun.** In 1687 Isaac Newton stated three "laws of motion," which he believed were applicable to the planets.... | |
| William Nicholson - 1809
...ones do round their centre the .Sun; viz. in such manner that, in the satellites of the same planet, **the squares of the periodic times are proportional to the cubes of their** distances from the primary planet. SATELLITE« of Jupiter, are four little moons, or secondary planets... | |
| Charles Hutton - 1815
...do round their centre the sun ; viz, in ¡>ueh a maniirr that, in the satellites of the same planet, **the squares of the periodic times are proportional to the cubes of their** distances from the primary planet. For the physical cause of their motions, see GRAVITY. See also PLANETS.... | |
| John Bonnycastle - 1816 - 428 páginas
...that the squares of the times in which any two planets complete their revolutions in their orbits, **are proportional to the cubes of their mean distances from the sun.** To illustrate this rule by an example : Venus, for instance, revolves round the sun in 224 days, and... | |
| William Nicholson - 1821
...ones do round their centre the Sun ; viz. in such manner, that, in the satellites of the same planet, **the squares of the periodic times are proportional to the cubes of their** distances from the primary planet. SATELLITES of Jupiter, are four little moons, or secondary planets,... | |
| William Nicholson - 1819
...proportional to the times in which they are described. The squares of their periodical times are as **the cubes of their mean distances from the sun. The secondary planets** describe also circles or ellipses, one of whose foci is in the center of their primary ones, &c. From... | |
| William Nicholson - 1821
...ones do round their centre the Sun ; viz. in such manner, that, in the satellites of the same planet, **the squares of the periodic times are proportional to the cubes of their** distances from the primary planet. SATELLITES of Jupiter, are four little moons, or secondary planets,... | |
| James Mitchell - 1823 - 576 páginas
...mean distances. Farther, it is rigorously demonstrable, that when bodies circulate in such manner that **the squares of the periodic times are proportional to the cubes of** the distances, the central force which actuates them is in the inverse ratio of the square of the distance... | |
| 1824
...if the projectile force does not exceed a certain limit, will become an ellipse. The third law, that **the squares of the periodic times are proportional to the cubes of** the distances, is a property which belongs to the bodies describing elliptic orbits, according to the... | |
| George Miller - 1824
...proportional to the times ; 3. that in the movements of different planets round the same central body **the squares of the periodic times are proportional to the cubes of** the mean distances. The Rhodolphirie tables of the planetary movements, in constructing which he assisted... | |
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