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Updated: May 14, 2025
I have also used mechanical interrupters in many ways. To avoid the difficulties with frictional contacts, the preferred plan adopted was to establish the arc and rotate through it at great speed a rim of mica provided with many holes and fastened to a steel plate.
The asymmetry of the crystal, due to a one-sided working of the forces of crystallization, plays the same role here as does the alchemic opposition between the two bodies used for the production of frictional electricity.
The steam-engine kind won't do it, and the acid kind won't do it, but the frictional kind'll do it every time if you only know how to apply it. "Well, sir, now I pass to the sorrerful part of my story. There is a girl named Bella Dougherty that does housework for a man named Muffitt, and a mighty nice girl she is; or, I used to think her nice. Maybe you know where Mr.
I pass a steady or low frequency current through the wire, and it is heated uniformly in all parts. The heating here is due to conduction, or frictional losses, and the gas around the wire has as far as we can see no function to perform. But now let me pass sudden discharges, or a high frequency current, through the wire.
The rove is drawn forward by surface or frictional contact between the roll itself and a rapidly rotating drum. The yarn guide is moved rapidly from side to side by means of the grooved cam on the left, the upright lever fulcrumed near the floor, and the horizontal rod which passes in front of the rolls and upon which are fixed the actual yarn guides.
Equally unacquainted are they generally with the diverse physiological action of the several modifications of the electric force galvanism, magnetism, faradism, and frictional electricity. This, in their candor, they commonly acknowledge.
Thus, by means of two machines at a moderate distance apart, nearly 80 per cent, of the power imparted to one machine could be again yielded in the mechanical form by the second, leaving out of consideration frictional losses, which latter need not be great, considering that a dynamo machine had only one moving part well balanced, and was acted upon along its entire circumference by propelling force.
She is the fierce center of retraction, of frictional withdrawal into separateness. She it is who sullenly stands with her back to us, and refuses to meet and mingle. She it is who burns white with the intense friction of her withdrawal into separation, that cold, proud white fire of furious, almost malignant apartness, the struggle into fierce, frictional separation.
They then returned to the study of the isinglass, which they were able to split into extremely thin sheets. Suddenly a cloud passed over the table, and almost immediately disappeared, and then a sharpened pencil with which Ayrault had been writing began to trace on a sheet of paper, in an even hand, and with a slight frictional sound.
Von Kleist found that by a device made of a narrow-necked bottle containing alcohol or mercury, into which an iron nail was inserted, he was able to retain the charge of electricity, after electrifying this apparatus with the frictional machine.
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