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The different parts of the engines and the screws were made of gelatinized fiber, which combined in sufficient degree flexibility with resistance. This material could be used in every form. It was insoluble in most gases and liquids, acids or essences, to say nothing of its insulating properties, and it proved most valuable in the electric machinery of the "Albatross."

After the ceremonial greetings had been paid, Lady Eleanore Rochcliffe stood apart from the mob of guests, insulating herself within a small and distinguished circle, to whom she accorded a more cordial favor than to the general throng.

The caveat, however, does not describe the invention very clearly; it describes the two persons as being insulated, but Meucci claims that he never made any mention of insulating persons, but only of insulating the wires.

A metal can, in fact, be electrified, that is to say, may possess an excess of positive or negative electrons which cannot easily leave it in ordinary conditions. To cause them to do so would need an appreciable amount of work, on account of the enormous difference of the specific inductive capacities of the metal and of the insulating medium in which it is plunged.

There is no wood, insulating compound or other dielectric materials in large enough quantities to absorb the weak currents that flow between them, hence weaker sounds can be heard when this kind of a variometer is used. With it you can tune sharply to waves under 200 meters in length and up to and including wave lengths of 360 meters.

For phonic communication a spherical sending battery is a ball of metultron, surrounded by an insulating shell of inertron, and this in turn by a spherical shell of katultron, from which the current radiates in every direction, tuning being accomplished by frequency of intermissions, with audio-frequency modulation.

Particularly it is necessary that the expense involved in drawing the wire, insulating it, and winding machines with it, should be diminished.

Seaton exclaimed, writhing out of his insulating suit. "I feel as though I'd been pulled half-way through a knot-hole and riveted over on both ends! How big a lens did you make, anyway? Looked as though it would hold a couple of liters; maybe three." "Its contents are almost exactly three liters." "Hm m m. Seven and a half million kilograms say eight thousand tons.

This is done by means of an insulating tube known as a leading-in insulator, or bulkhead insulator as it is sometimes called. As a protection against lightning burning out your instruments you can use either: an air-gap lightning arrester, a vacuum tube protector, or a lightning switch, which is better.

The slots should be about one-quarter of an inch in width and of the depth shown in the drawing. Two such discs should be made and, when all cut out, should be given several coats of shellac to add stiffness and to improve the insulating qualities. Now at your hardware dealer's buy one-quarter pound of No. 24 double, cotton-covered wire and proceed to wind the coils in the manner shown.