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Updated: May 2, 2025
Almost from the outset, and shortly after Ampère had made public the idea of constructing a telegraph, and the day after Gauss and Weber set up between their houses in Göttingen the first line really used, it was thought that the conducting properties of the earth and water might be made of service.
But Andre Marie Ampere she praised unreservedly, with the warmth of most exalted admiration.
Fu-Manchu, feared him; I feared him myself feared him as one fears a scorpion; but when Nayland Smith hauled himself up on the wooden ledge above the door and swung thence into the darkened room, I followed and was in close upon his heels. But I admired him, for he had every ampere of his self-possession in hand; my own case was different. He spoke close to my ear. "Is your hand steady?
The man who would grasp the whole meaning of Rome's name, must spend a lifetime in study and look forward to disappointment in the end. It was Ampère, I believe, who told a young student that he might get a superficial impression of the city in ten years, but that twenty would be necessary in order to know anything about it worthy to be written.
Experiments show that a current of one ampere passing for one second, i.e., a coulomb of electricity, causes the deposition of 0.001118 gram of silver from a normal solution of a silver salt.
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.
Then came the deflected-needle telegraph, first suggested by Ampere, and a few such lines were constructed, and to some extent operated. In one of the original telegraph lines the wires were bound in hemp and laid in pipes on the surface of the ground.
"The Curl-Papers" for thus he styles his works having been translated into German and English, the reputation of the author may be called European. The forty maintainers of the Floral Games of Clémence Isaure at Toulouse awarded him the title of Maître ès Jeux-Floraux. His progress through the South was marked by ovations, and every town, from Marseilles to Bordeaux, hastened to recognize the modern Troubadour. Happier than most of his predecessors, Jasmin receives his laurels in season, and can wear the crowns that are presented him. The "Papillôtos" were formerly scattered in three costly volumes; they have now been collected in one handsome duodecimo, with an accompanying French translation of the principal pieces, a translation which called from Ampère the remark, "A défaut des vers de Jasmin, on ferait cent lieues pour entendre cette prose-l
Retarded clocks are sometimes employed as electric meters for registering the consumption of electricity. In these the current to be measured flows through a coil beneath the bob of the pendulum, which is a magnet, and thus affects the rate. In other meters the current passes through a species of galvanometer called an ampere meter, and controls a clockwork counter.
Here are some of the results obtained from experiments made with the Holtz machine. A machine with a plate 46 in. in diameter, making 5 turns in 3 seconds, produced a constant current capable of decomposing 3½ millionths of a milligram in a second. This is equal to the effect produced by a Grove's cell in a circuit of 45,000 ohms resistance. The current produced would be about 0.0000044 ampere.
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