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"Those minor planets all are known to rotate in a narrow zone between the orbits of Mars and Jupiter; in their perihelia they cannot approximate the sun as we have done; we shall not be classed with them." "Our lack of instruments," said the count, "is much to be deplored; it baffles our investigations in every way." "Ah, never mind! Keep up your courage, count!" said Servadac, cheerily.
The latter patent, curiously enough, comprised a very primitive form of rotary engine. Barber proposed to turn coal, oil, or other combustible stuff into gas by means of external firing, and then to mix the gases so produced with air in a vessel called the exploder. This mixture was then ignited as it issued from the vessel, and the ensuing flash caused a paddle-wheel to rotate.
And whatever things were to be, and whatever things were, as many as are now, and whatever things shall be, all these nous arranged in order; and it arranged that rotation, according to which now rotate stars and sun and moon and air and aether, now that they are separated.
Each of the shafts of the receiving instrument will rotate alike, and each draw up its arm of the automatic pen precisely as though one took hold of the points of the two legs of the V, and drew them apart to right and left in a straight line. This moves the apex of the V, with its pen, in a straight line upward at the same time the writer at the sending instrument pushed his pencil upward.
For instance, the experimenter may, by selecting a proper position, approach the hand at a certain considerable distance to the bulb, and he may cause the brush to pass off by merely stiffening the muscles of the arm. When it begins to rotate slowly, and the hands are held at a proper distance, it is impossible to make even the slightest motion without producing a visible effect upon the brush.
He was let down through a column that seemed of brass, but it was formed of angelic spirits, that he might descend safely amongst the unhappy, and witness the vastation of souls; and heard there, for a long continuance, their lamentations; he saw their tormentors, who increase and strain pangs to infinity; he saw the hell of the jugglers, the hell of the assassins, the hell of the lascivious; the hell of robbers, who kill and boil men; the infernal tun of the deceitful; the excrementitious hells; the hell of the revengeful, whose faces resembled a round, broad-cake, and their arms rotate like a wheel.
So far as we can tell, no agent is likely to interfere with the gradual evolution caused by the tides, which dynamical principles have disclosed to us. As the years roll on, or perhaps, I should rather say, as thousands of years and millions of years roll on, the day will continue to elongate, or the earth to rotate more slowly on its axis.
Oersted discovered that an external magnetic needle places itself perpendicular to an electric current; and we should expect that, if the molecules of an iron wire possessed inherent polarity and could rotate, a similar effect would take place in the interior of the wire to that observed by Oersted. Wiedermann first remarked this effect, and it has been known as circular magnetism.
Through the door which has been left open you see the little group of engineers, staff officers and naval men receding and falling away behind you. You straighten up and go up hill. You halt and begin to rotate. Through the open door, the green field, with its red walls, rows of worksheds and forests of chimneys in the background, begins a steady processional movement.
The maximum elevation is 75 degrees, and like the gun carriage bearing the tube guide it can be moved through a complete circle, being free to rotate in the fixed pivot jack to enable this end to be attained. The foregoing may be said to represent the most powerful types of mobile anti-aircraft weapons used by the Austro-German forces to-day.
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