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Updated: May 2, 2025
This tube is made like the amplifier tube described for use with the preceding experimental transmitter, but it is larger, has a more perfect vacuum, and will stand a plate potential of 350 volts while the plate current is .045 ampere. The filament takes a current of a little more than 2 amperes at 7.5 volts. A standard 4-tap base is used with it.
Ampère, a French traveler, thought Douglas a perfect representative of the energetic builders of the Western commonwealths, and predicted that he would come into power when it should be the turn of the West to dominate the country. "Small, black, stocky," so this observer described him, "his speech is full of nervous power, his action simple and strong."
She always spoke of Madame Récamier in rapturous terms, and her "belle Juliette" and her "dear angel" seems to have been free under the eyes of her hostess to capture such noble and learned lovers as Mathieu de Montmorency, Prince Augustus of Prussia, Ampère, and Chateaubriand.
Four years later, the famous French physicist Ampere outlined a similar theory, and utilized the law in his mathematical calculations. And with that the law of Avogadro dropped out of sight for a full generation.
One ampere decomposes .00009324 gramme of water per second, liberating .000010384 gramme of hydrogen and .00008286 gramme of oxygen. The quantity in grammes of any other chemical element or ion which is liberated from an electrolyte or body capable of electrochemical decomposition in a second by a current of one ampere is given by what is called the electrochemical equivalent of the ion.
We were, therefore, extremely surprised when M. Ampere arrived in Weimar a few days ago, and proved to be a lively youth, some twenty years old; and we were no less surprised when, in the course of further intercourse, he told us that the whole of the contributors of the. Globe, whose wisdom, moderation, and high degree of cultivation we had often admired, were only young people like himself.
M. Ampere announced the news to the Academy, which thereupon decided to adjourn. I quitted the National Assembly, where a questor to succeed General Negrier, who was killed in June, was being nominated, and went to M. de Chateaubriand's house, No. 110, Rue du Bac. I was received by M. de Preuille, son-in-law of his nephew. I entered Chateaubriand's chamber.
The wooden combs prevent the plates from coming in mutual contact, and give the apparatus great solidity. The process of formation is ingenious and rapid. To give 1 square meter a capacity of 20 ampere hours, there is required only a quarter of an hour's treatment. "To obtain the same result by Plante's method, months are required.
Oersted, in 1820, discovered the action of a voltaic current on a magnetic needle; and immediately afterwards the splendid intellect of Ampere succeeded in showing that every magnetic phenomenon then known might be reduced to the mutual action of electric currents. The subject occupied all men's thoughts: and in this country Dr.
It is not devoid of interest to observe that Ampère himself, notwithstanding his caution, really formed some hypotheses, and recognized that electrical phenomena were governed by the laws of mechanics. Yet the principles of Newton then appeared to be unshakable.
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