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"Think!" said his grandmother, looking down at her poor, helpless foot as it lay on the velvet stool. "If I hadn't had an accident to-night, you'd have been obliged to think ill of of which of them was it that had the impertinence to talk my affairs over with you?" "Mercury and Uranus, Jupiter, Saturn and Venus," said the Prophet with almost terrible gravity. "Exactly.
As to Uranus, his first satellite, Ariel, half as far from him as our Moon is from the Earth, is comparatively, though not actually, eight times nearer." "Therefore," said Barbican, now taking up the subject, "an experiment analogous to ours, starting from either of these three planets, would have encountered fewer difficulties. But the whole question resolves itself into this.
A comparison of the role of Saturn as the outermost planet of our cosmic system with the role played by its metal, lead, as a final product of radioactive disintegration, leads one to conceive of the radioactive sphere of the earth as being related especially to the planets outside the orbit of Saturn, namely, Uranus, Neptune, Pluto.
Then the distances are curiously relative. It has been found that if we place the following line of numbers, and add 4 to each, we shall have a series denoting the respective distances of the planets from the sun. It will stand thus 4 7 10 16 28 52 100 196 Merc. Venus. Earth. Mars. Jupiter. Saturn. Uranus.
What this great problem was, and how astonishing was the solution it received, must now be considered. Ever since Herschel brought himself into fame by his superb discovery of the great planet Uranus, the movements of this new addition to the solar system were scrutinized with care and attention. The position of Uranus was thus accurately determined from time to time.
Unlike the orbits of the foregoing satellites, which are nearly in the same plane as the orbits of their primaries, those of the satellites of Uranus are almost perpendicular to his own. They are travelled in periods of two and a half to thirteen and a half days.
Bomilcar, Himilcar, Abd-Melkarth, and the like. Dagon appears in scripture only as a Philistine god, which would not prove him to have been acknowledged by the Phoenicians; but as Philo of Byblus admits him among the primary Phoenician deities, making him a son of Uranus, and a brother of Il or Kronis, it is perhaps right that he should be allowed a place in the Phoenician list.
The following table shows what fraction the centrifugal force is of the centripetal force in every case; and the relation which that fraction bears to the number of satellites. Mercury. 1/360 Venus. 1/253 Earth. 1/289 1 Satellite. Mars. 1/127 2 Satellites. Jupiter. 1/11·4 4 Satellites. Saturn. 1/6·4 8 Satellites, and three rings. Uranus. 1/10·9 4 Satellites.
Almost simultaneously with Forbes, Professor Todd set about groping for the same object by the help of a totally different set of indications. Adams's approved method commended itself to him; but the hypothetical divagations of Neptune having scarcely yet had time to develop, he was thrown back upon the "residual errors" of Uranus.
They are exceedingly difficult of execution, even with the best and largest modern telescopes; and their results remain clouded with uncertainty. It will be remembered that Uranus presents the unusual spectacle of a system of satellites travelling nearly at right angles to the plane of the ecliptic.
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