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Updated: June 4, 2025
The open-sea plants had already left behind the increasingly arid seafloor, where a prodigious number of animals were still swarming: zoophytes, articulates, mollusks, and fish. While we were walking, I thought the lights of our Ruhmkorff devices would automatically attract some inhabitants of these dark strata.
What might make us suppose such an interpretation of the phenomenon to have its raison d'etre, is that with the induced currents of the Ruhmkorff coil, it is not the positive pole that is the hottest, but rather the negative; from whence we might draw the deduction that it is not so much the direction of the current that determines the calorific effect in the electrodes, as the conditions of such current with respect to the generator.
In 1859, I myself undertook numerous researches on this subject, and experimented on the induction spark of the Ruhmkorff coil, the results of these researches having been published in the last two editions of my notes on the Ruhmkorff apparatus. These researches were summed up in the journal La Lumiere Electrique for June 15, 1879. Recently, Mr.
"Captain Nemo, to my every objection you give such crushing answers, I'm afraid to entertain a single doubt. However, though I have no choice but to accept both the Rouquayrol and Ruhmkorff devices, I'd like to register some reservations about the rifle with which you'll equip me." "But it isn't a rifle that uses gunpowder," the captain replied. "Then it's an air gun?" "Surely.
As for the Ruhmkorff lamps, they were unnecessary in the midst of these brilliant waters saturated with our electric rays. After Ned was dressed, I reentered the lounge, whose windows had been uncovered; stationed next to Conseil, I examined the strata surrounding and supporting the Nautilus.
H. D. Ruhmkorff, an able and learned chemist, discovered the induction coil. In 1864 he won the quinquennial French prize of £2,000 for this ingenious application of electricity A voltaic battery, so called from Volta, its designer, is an apparatus consisting of a series of metal plates arranged in pairs and subjected to the action of saline solutions for producing currents of electricity.
"That," he told me, "is a gaseous discharge caused by our use of sodium, but it's only a mild inconvenience. In any event, every morning we sanitize the ship by ventilating it in the open air." Meanwhile I examined the Nautilus's engine with a fascination easy to imagine. "You observe," Captain Nemo told me, "that I use Bunsen cells, not Ruhmkorff cells. The latter would be ineffectual.
At this depth I could still see the rays of the sun, though feebly; to their intense brilliancy had succeeded a reddish twilight, the lowest state between day and night; but we could still see well enough; it was not necessary to resort to the Ruhmkorff apparatus as yet.
In any case, it did light our way, vaguely, it is true, but I soon accustomed myself to the peculiar darkness, and I understood, under such circumstances, the uselessness of the Ruhmkorff apparatus. As we advanced, I heard a kind of pattering above my head. The noise redoubling, sometimes producing a continual shower, I soon understood the cause.
Everything came to a halt until Hiroshito discovered thermic induction, and we were able to elevate temperature almost indefinitely through a process similar to the induction of high electric potentials by means of transformers and the Ruhmkorff coil. "Hiroshito wasn't looking for a detonating ray and didn't have time to bother with it, but I started a series of experiments with that end in view.
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