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Updated: May 13, 2025
"Audacity," he exclaimed to himself, "as inspired, perhaps, as a Lavoisier's or an Ampere's, the audacity of a Vinteuil making experiment, discovering the secret laws that govern an unknown force, driving across a region unexplored towards the one possible goal the invisible team in which he has placed his trust and which he never may discern!"
Ten years later, Ritchie improved on Ampere's method, and exhibited a model at the Royal Institution, London. About the same time, Baron Pawel Schilling, a Russian nobleman, still further modified it, and the Emperor Nicholas decreed the erection of a line from Cronstadt to St. Petersburg, with a cable in the Gulf of Finland but Schilling died in 1837, and the project was never realised.
If, in place of the rod, we take a small square soft iron plate and allow its molecules freedom under the sole influence of the earth's magnetism, then we invariably find the polarity in the direction of the magnetic dip, no matter in what position it be held, and a sphere of soft iron could only be polarized in a similar direction Thus we can never obtain complete external neutrality while the molecules have freedom and do not form an internal closed circle of mutual attractions; and whatever theory we may adopt as to the cause of polarity in the molecule, such as Coulomb's, Poisson's, Ampere's, or Weber's, there can exist no haphazard arrangement in perfectly soft iron, as long as it is free from all external causes except the influence of the earth; consequently these theories are wrong in one of their most essential parts.
Ampere's experiment in figure 32 has shown us that two currents, more or less parallel, influence each other; but in 1831 Professor Faraday of the Royal Institution, London, also found that when a current is started and stopped in a wire, it induces a momentary and opposite current in a parallel wire.
Ampere's distinguished countryman, Arago, a few months later, gave the finishing touches to Oersted's and Ampere's discoveries, by demonstrating conclusively that electricity not only influenced a magnet, but actually produced magnetism under proper circumstances a complemental fact most essential in practical mechanics.
The highly successful translation of Goethe's dramatic works, by Stapfer, was noticed by Monsieur J. J. Ampere in the Parisian Globe of last year, in a manner no less excellent, and this affected Goethe so agreeably that he very often recurred to it, and expressed his great obligations to it. "Ampere's point of view is a very high one," said he.
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