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Updated: May 28, 2025
The ill-fated ship never returned from her voyage, but went down in the icy waters of the North, there to remain until some future cataclysm of nature, ten thousand years hence, shall reveal the ship and the first marine dynamo as curious relics of a remote civilization.
From the generating dynamo the current is conveyed directly to the storage batteries, and these alone work the electric motor, which, if desired, keeps continually in motion, pumping, grinding, or driving any suitable class of machinery. It is rather surprising to find how relatively small is the advantage possessed by the vane-windmill over the fixed type in the matter of continuity of working.
He also expected to realize still further gains in economy from the use of a large dynamo in place of several small machines by a more than correspondingly lower armature resistance, less energy for magnetizing the field, and for other minor reasons.
He chirruped again, and the cat, after an ostentatious yawn and stretch, came to him beating up to windward, as it were, and making the bed in three tacks. When O'Hara entered the room some time later he found his patient in a very cheerful frame of mind, and the black cat sitting on his chest purring like a dynamo and kneading like an industrious baker.
Each coil, he said, was tested to double the pressure of the completed dynamo, but when they were all fitted together, their insulation broke down at the same volts. The difficulty had been overcome by making the separate coils to stand much higher pressures. Prof.
"And then you turn a valve?" "Exactly, and the air-motor turns over the dynamo which starts generating electricity right away." "Then, except for the first cost of the car, the expense of operating it is comparatively nothing?" asked Dick. "Yes, you might say we get our power out of the air, and that's free so far."
When the alternating current was introduced for practical purposes it was not needed for arc lighting, the circuit for which, from a single dynamo, would often be twenty or thirty miles in length, its current having a pressure of not less than five or six thousand volts.
Damon, in a low voice, as he assisted the young inventor to carry a small dynamo, that was used for operating the incandescent lights. "I hardly know myself. I have a half-formed plan in my mind. I may be able to carry it out, and I may not. I don't want to say anything until I look over the machinery, and see if all the parts which I need are here. Please say nothing about it."
The impudence of the boy to have suggested it to him him who had so often held forth upon the value of conservatism in business! And he remembered with pride the speaker who had once said, "It is such solid vertebrae as Mr. Houghton that form the backbone of our business world." That speaker had been Bender, of the New York Dynamo Company. Poor Bender!
The newest leaf and the oldest tree alike expanded with praise.... What a splendor to be out of the city and the paint and the tragedy; to have in her veins the warm brown earth and the good hot sun and this mighty dynamo beneath! She was mad with it all, and glad it was so. Beth raised her eyes to the dazzling vault. One cannot sit a horse so well.
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