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Updated: May 19, 2025
Connecting the oscillator tubes up in parallel means that the two filaments are connected across the leads of the storage battery, the two grids on the same lead that goes to the aerial and the two plates on the same lead that goes to the positive pole of the generator. Where two or more oscillator tubes are used only one storage battery is needed, but each filament must have its own rheostat.
"By Jove," he said to himself, "I got away just in time. Another month and I couldn't have done it." It was midnight when he saw the lights of town, panelled in gold against a peacock sky. Acres and acres of blue darkness lay close-pressing upon the gaudy grids of light. Here one might really look at this great miracle of shadow and see its texture.
Lermontoff explained the purposes of the battery, meanwhile examining it thoroughly, and finding that many of the cells had been all but ruined in transit, through the falling away of the composition in the grids. Something like half of the accumulators, however, were intact and workable; these he uncoupled and brought into the dynamo room, where he showed the Governor the process of charging.
Forward rose a stumpy mast carrying a lantern cage near the top, and still farther forward, almost in the bows, lay an unexpectedly massive anchor, housed in grids, with behind it a small hand winch for pulling in the chain. "We had a bit of a blow coming round the Coubre into the river," Hilliard went on enthusiastically, "and I tell you she didn't ship a pint.
Finally the partially assembled tube was placed in the annealing oven, where it would remain at a high and constant temperature until its filaments, grids, and plates had been installed. Eventually, in that same oven, it would be allowed to cool slowly and uniformly over a period of days.
Yet I thought now that I could hear something. Vague footfalls. A rustling. And a microscopic whine, as though some device were within range of us. Snap was fumbling in his pocket. "Wait! I've got a pair of low-scale detectors." He put the little grids against his ears. I could hear the sharp intake of his breath. Then he seized me, pulled me down to the metal floor of the entryway. "Back, Gregg!
And Tommy's fighting ships were subject to the same rifle fire against their propelling grids that had defeated the fleet from Rahn. The only thing the avenging fleet could now accomplish was the death of the women it could not save. War! A huge ornithopter came heavily out on the landing stage in the city of Rahn. Its crew took their places.
I stood quivering, and Moa thrust her weapon against my face. The grids were swaying again with a message from Grantline. But it was ignored. In the glare of moonlight by the forward window, Miko held Anita, his great hands pawing her with triumphant possessive caresses. "So, little Anita, you are given back to me!" Moonlight upon Earth so gently shines to make romantic a lover's smile!
From the audiphone grid Coniston's voice sounded. "I say, Haljan, something's wrong. Hahn doesn't signal." The lookout in the forward tower was clinging to our window. On the deck below our turret a member of the crew appeared, stood lurching for a moment, then shouted and ran, swaying, aimless. From the lower hull corridors our grids sounded with the tramping of running steps.
Sellon and Volckmar increased its efficiency by putting the paste into holes cast in the lead. The "E. P. S." accumulator of the Electrical Power Storage Company is illustrated in figure 21, and consists of a glass or teak box containing two sets of leaden grids perforated with holes, which are primed with the paste and steeped in dilute sulphuric acid.
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