| 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.... | |
| John Bonnycastle - 1816 - 428 Seiten
...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... | |
| Mary Somerville - 1831 - 621 Seiten
...observation, that the squares of the periodic times of the planets, or the times of their revolutions **round the sun, are proportional to the cubes of their mean distances from** his centre : whence it follows, that the intensity of gravitation of all the bodies towards the sun... | |
| Hervey Wilbur - 1831 - 144 Seiten
...the squares of the periods, in which any two pla* nets complete their revolutions in their orbits, **are proportional to. the cubes of their mean distances from the Sun.** \ This proportion requires illustration. Let the period of tha Earth's revolution, be called 12 months,... | |
| Mary Somerville - 1834 - 458 Seiten
...observation, that the squares of the periodic times of the planets, or the times of their revolutions **round the sun, are proportional to the cubes of their mean distances from** his centre : whence it follows that the intensity of gravitation of all the bodies towards the sun... | |
| Hervey Wilbur - 1834 - 144 Seiten
...that the squares of the periods, in which any two planets complete their revolutions in their orbits, **are proportional to the cubes of their mean distances from the Sun.** This proportion requires illustration. Let the period of the Earth's revolution, be called 12 months,... | |
| Mary Somerville - 1834 - 458 Seiten
...having the sun in one of their foci ; and third, that the squares of the periodic times of the planets **are proportional to the cubes of their mean distances from the sun.** These laws extend also to the satellites. Latent heat. Caloric existing in all bodies, which is not... | |
| Hugh Murray - 1837
...From Kepler's third law, we know that the squares of the periodical times of any two of the planets **are proportional to the cubes of their mean distances from the sun.** This law is independent of the eccentricities of the orbits; and the same relation would subsist between... | |
| William Augustus Norton - 1839 - 373 Seiten
...of which the sun occupies one of the foci. 3. The squares of the times of revolution of the planets **are proportional to the cubes of their mean distances from the sun,** or of the semi-major axes of their orbits. These laws are known by the denomination of Kepler's Laws.... | |
| Roswell Park - 1841 - 587 Seiten
...the sun, pass over equal areas in equal times; and 3. The squares of their times of annual revolution **are proportional to the cubes of their mean distances from the sun.** By the second law, the planets move slowest when farthest from the sun ; as the radius vector, being... | |
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