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Updated: May 21, 2025
Your curve of rate-of-climb is flattening out. You are now rising at near-maximum speed, and not much more forward velocity can be anticipated. You have an air-speed relative to surface of six-nine-two miles per hour. The rotational speed of Earth at this latitude is seven-seven-eight.
Their rotational velocity being thus relatively small, they formed "inner rings," very much nearer to the centre of condensation than would have been possible on the unmodified theory of Laplace. Phobos might, in this view, be called a polar offset of Mars; and the rings of Saturn are thought to own a similar origin.
Though each one may report in different words of his rotational experience, the experience itself is almost childishly simple, and whosoever has been there instantly recognizes other authentic reports. To have been in that eddy is a freemasonry of which the common password is a "fie" on all the operations of the simple popular understanding.
As a result, the moon drew further and further away from the earth until it reached its present position, about 240,000 miles away. At the same time the tidal influence of the earth was lessening the rotational movement of the moon. This went on until it turned on its axis in the same period in which it revolves round the earth, and on this account it always presents the same face to the earth.
Any force which could act longitudinally on such a scale must be limited latitudinally in its action, as witness the belts of Jupiter and the spots upon the sun. Rotational, climatic, or other physical cause could not fail of zonal expression. Yet these lines are grandly indifferent to such competing influences.
Thus, without fly-wheels, but with fluid circulations through apertures, we may make a model spring balance or a model luminiferous ether, either without or with the rotational quality corresponding to that of the true luminiferous ether in the magnetic fluid in short, do all by the perforated solids with circulations through them that we saw we could do by means of linked gyrostats.
Let us restate the matter of the earth and moon in the light which the argument with respect to Jupiter has given us. At present the rotational moment of momentum of the earth is about a fifth part of the revolutional moment of momentum of the moon.
On this scale the rotational share which has fallen to our earth and moon does not even rise to the dignity of a single pound, it can only be represented by the very modest figure of 19s. 5d. This is divided into two parts the earth by its rotation accounts for 3s. 4d., leaving 16s. 1d. as the equivalent of the revolution of the moon.
Loring, sitting inside the jet boat, waited until they had reached an altitude of five hundred miles. "All right, Manning," said Loring, "give me the course!" Roger calculated the rotational speed of the planet, the Space Devil's altitude, and the speed of the jet boat. He drew a line between the Space Devil and Polaris, checked it on the astro compass, and reached for the intercom mike.
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