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Spinning frames are usually double-sided, and each side may contain any practicable number of spindles; 64 to 80 spindles per side are common numbers. Each rove bobbin is free to rotate on its own peg as the rove from it is drawn downwards by the retaining rollers.
He then passed from magnets to currents, enclosing bars of heavy glass, and tubes containing liquids and aqueous solutions within an electro-magnetic helix. A current sent through the helix caused the plane of polarization to rotate, and always in the direction of the current. The rotation was reversed when the current was reversed.
The borers applied to the rock the piston of a cylinder made to rotate with great rapidity by the pressure of air reduced to one-twentieth of its ordinary volume; then when they had made holes sufficiently deep, they withdrew the machines and charged the mines with dynamite.
"If," he said pontifically, "they are oriented in the same direction, we refer to the substance as orthohydrogen. If they are oriented in opposite directions, it is parahydrogen. The ortho molecules rotate with odd rotational quantum numbers, while the para molecules rotate with even quantum numbers.
Let the albumen fall on the center of the filtered liquid, avoiding, if possible, contact with the glass of the beaker. It soon sinks, and after the lapse of some time, a simple inspection will show which is dissolving with the greater rapidity. Agitation assists solution. Therefore take the two beakers, one in each hand, and rotate the contents equally.
Laplace alleged as one among other evidences of a common genetic cause, that the planets rotate in a direction the same as that in which they go round the Sun, and on axes approximately perpendicular to their orbits.
When they learn their true relationship to the rest of humanity, to the universe and to eternity, they are generally willing and able to let the earth rotate and revolve for a few hours without their personal attention. They realize that worry and anxiety waste time and energy. Many complain that they can not sleep. This they repeat to themselves and to others many times a day.
If we rotate this rod slowly, horizontally or vertically, taking observations at each few degrees of rotation of an entire revolution, we find still the same gradual symmetrical change of polarity, and that its symmetry is as complete at neutrality as in evident polarity.
Maybe they'll even figure out a way to make it rotate faster, give it a reasonably short day, and a breathable atmosphere make a warmer second Earth out of it... Sometimes, when you jump farther, you jump over a lot of trouble. Better than going slow, with the faint-hearts. Their muddling misfortunes begin to stick to you.
The ship goes there every three weeks, and we usually figure eighteen weeks there, then the three weeks back here. The guards and others rotate that way. They have a tendency to ... uh ... deteriorate if we don't." Hanlon let himself shiver, but grinned as he did so. "Now that's one thing I don't want to do go nuts. Can't make any credits doing that." The leader raised his hand.
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