Gravitation: An Elementary Explanation of the Principal Perturbations in the Solar SystemC. Knight, 1834 - 215 lappuses |
Saturs
| 112 | |
| 119 | |
| 124 | |
| 130 | |
| 137 | |
| 146 | |
| 148 | |
| 153 | |
| 50 | |
| 57 | |
| 63 | |
| 65 | |
| 67 | |
| 71 | |
| 78 | |
| 88 | |
| 94 | |
| 104 | |
| 105 | |
| 159 | |
| 162 | |
| 164 | |
| 176 | |
| 187 | |
| 189 | |
| 193 | |
| 203 | |
| 204 | |
| 212 | |
Citi izdevumi - Skatīt visu
Bieži izmantoti vārdi un frāzes
accelerates angular motion aphelion apogeal distance apogee apojove apses passes apses progresses apses to regress B₁ B₂ C₁ causes the line central body consequence curve depending described diminishes the excentricity disturbing body disturbing planet earth and sun earth's orbit ellipse equal evection exactly excen excentricity independent exterior planet force directed fourth satellite fundamental plane greater greatest independent excentricity independent of perturbation irregularity joining the earth Jupiter Jupiter's orbit Jupiter's satellites Jupiter's shape latus rectum line joining line of apses line of conjunction line of nodes lite longitude major axis mean distance mental plane moon moves moon's orbit nearly nodes regresses old orbit opposite perigee perihelion perijove periodic plane of reference points of conjunction position produced proportion radius vector revolution revolving round round the earth round the sun satel Saturn second satellite sun's attraction suppose syzygy tends to draw third satellite tion tricity turbing force variation Venus
Populāri fragmenti
29. lappuse - The third, viz. that the squares of the periodic times are proportional to the cubes of the mean distances...
22. lappuse - In all our diagrams it is to be understood, that the planet, or satellite, moves through its orbit in the direction opposite to the motion of the hands of a watch. This is the direction in which all the planets and satellites would appear to move, if viewed from any place on the north side of the planes of their orbits. The time in which the planet moves from any one point of the orbit through the whole orbit, till it comes to the same point again, is called the planet's periodic time.
14. lappuse - The planets describe ellipses which are very little flattened, and differ very little from circles. Three or four comets describe very long ellipses : and nearly all the others that have been observed are found to move in curves which cannot be distinguished from parabolas. There is reason to think that two or three comets which have been observed move in hyperbolas.
vii. lappuse - The exercise of the mind in understanding a series of propositions, where the last conclusion is geometrically in close connexion with the first cause, is very different from that which it receives from putting in play the long train of machinery in a profound analytical process. The degrees of convictiOD in the two cases are very different.
13. lappuse - S) ; and if no other force whatever but this attraction acts upon the body ; then the body will move in one of the following curves — a circle, an ellipse, a parabola, or a hyperbola. " In every case the curve will, at the point A, have the same direction as the line AB ; or (to use the language of mathematicians) AB will be a tangent to the curve at A.
7. lappuse - The accuracy of astronomical observations is carried to a degree that can scarcely be imagined ; and by means of these we can every day compare the observed place of a planet with the place which was calculated beforehand, according to the law of gravitation. It is found that they agree so nearly as to leave no doubt of the truth of the law. The motion of Jupiter, for instance, is so perfectly calculated, that astronomers have computed ten years beforehand the time at which it will pass the meridian...
viii. lappuse - ... conclusion is geometrically in close connexion with the first cause, is very different from that which it receives from putting in play the long train of machinery in a profound analytical process. The degrees of conviction in the two cases are very different. It is known to every one who has been engaged in the instruction of students at our Universities, that the results of the differential calculus are received by many, rather with the doubts of imperfect faith than with the confidence of...
1. lappuse - Every particle of matter attract» every other particle. That is, if there were a single body alone, and at rest, then, if a second body were brought near it, the first body would immediately begin to move towards the second body. Just in the same manner, if a needle is at rest on a table, and if a magnet is brought near it, the needle immediately begins to move towards the magnet, and we say that the magnet attracts the needle. But magnetic attraction belongs only to certain bodies : whereas the...
200. lappuse - Prove that the attraction of a sphere of uniform density upon an external point is the same as if all the matter of the sphere were concentrated at its centre.
15. lappuse - But as we do not propose, hi this treatise, to enter into a discussion on the motions of comets, we shall confine ourselves to the consideration of motion in an ellipse. (20.) Everything that has been said respecting the motion of a planet, or body of any kind, round the sun, in consequence of the sun's attraction according to the law of gravitation, applies equally well to the motion of a satellite about a planet, since the planet attracts with a force following the same law (though smaller) as...