 Kepler, and is expressed by his second law, which is thus stated:— In the motion of a planet round the sun, the radius vector, drawn from the centre of the sun to the planet, sweeps over equal areas in equal times.  A Treatise on Spherical Astronomy - Pàgina 145per Robert Stawell Ball - 1908 - 506 pàginesVisualització completa - Sobre aquest llibre
 | Selim Hobart Peabody - 1869 - 388 pàgines
...orbit, the sun being at one focus. Second: The velocity of a planet is such that the line drawn from the sun to the planet sweeps over equal areas in equal times. A single impulse of projection, and a constant attraction toward a center are enough to cause motion... | |
 | William Chambers, Robert Chambers - 1869 - 526 pàgines
...linear velocity of the planet ; and it is in this, that the radius-vector (that is, the line drawn from the sun to the planet) sweeps over equal areas in equal times. This formed his second law. His third great discovery was, that the squares of the periodic times of... | |
 | Chambers W. and R., ltd - 1871 - 276 pàgines
...linear velocity of the planet ; and it is in this, that the radius-vector (that is, the line drawn from the sun to the planet) sweeps over equal areas in equal times. This formed his second law. His third great discovery was, that the squares of the periodic times of... | |
 | Edmund Beckett Baron Grimthorpe - 1876 - 470 pàgines
...are ellipses ; and that is called one of Kepler's laws. The second was that the radius vector from the sun to the planet sweeps over equal areas in equal times, in the same orbit, but not in different orbits ; which is called the conservation of areas ; and it... | |
 | Robert Stawell Ball - 1877 - 180 pàgines
...and is expressed by his second law which is thus stated :— In the motion of a planet round the sun, the radius vector drawn from the centre of the sun...the planet sweeps over equal areas in equal times. Thus, for example, in fig. 21, when the planet moves from A to B, its radius vector sweeps out the... | |
 | Zachariah Allen - 1879 - 270 pàgines
...occurs at these points. Kepler's second law is thus stated: "In the motion of a planet around the sun, the radius vector drawn from the centre of the sun...the planet sweeps over equal areas in equal times. " Every planet moves round the sun with variable velocity, and more rapidly as it approaches the common... | |
 | Robert Stawell Ball - 1880 - 482 pàgines
...and is expressed by his second law, which is thus stated:— In the motion of a planet round the sun, the radius vector, drawn from the centre of the sun...the planet, sweeps over equal areas in equal times. Thus, for example, in Fig 108, when the planet moves from A to B, its radius vector sweeps out the... | |
 | Robert Stawell Ball - 1880 - 488 pàgines
...is expressed by his second law, which is thus stated: — In the motion of a planet round the sun, the radius vector, drawn from the centre of the sun to the planet, sweeps over equal areas in equal limes. Thus, for example, in Fig 108, when the planet moves from A to B, its radius vector sweeps out... | |
 | Robert Stawell Ball - 1880 - 490 pàgines
...is expressed by his second law, which is thus stated : — Jn the motion of a planet round the sun, the radius vector, drawn from the centre of the sun to the planet, sweeps ever equal areas in equal times. Thus, for example, in Fig 108, when the planet moves from A to B,... | |
 | Candace Allen - 1882 - 26 pàgines
...equinoctial point. Kepler's second law is thus stated : " In the motion of a planet around the sun the radius vector drawn from the centre of the sun...the planet sweeps over equal areas in equal times. Every planet moves round the sun with variable velocity, and more rapidly as it approaches the common... | |
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