A History of Electric Telegraphy, to the Year 1837
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In our eReader you can find the full English version of the book. Read A History of Electric Telegraphy, to the Year 1837 Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A History of Electric Telegraphy, to the Year 1837
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It is evident that when a current passed, for example, through the coil i, the armature e, would be attracted, and the hammer attached to the other end of the lever would descend and strike the bell h. To prevent the sticking of the armature it was provided on its under surface with a thin plate of ivory. The ordinary clockwork alarum 0, d, 0", 0"', was intended to warn the attendant of the, * T'ydschrift ter bevordering van Nyverheid, vol. v. part 2.
to the Year 1837.
489 coming of a despatch.... The armature e, in ascending released the detent q, and so set the wheel work in motion.
Fig. 34.
" The current was produced by a pair v, composed of a copper cylinder containing acidulated water, in which was plunged when required another cylinder of zinc. Wires from the copper and zinc poles dipped into little cups of mercury, into which were also plunged as required the terminal wires of the electro- magnets.
" In the above-mentioned paper Professor Stratingh , stated that experiments made with this apparatus before the Physical Society of Groninque succeeded perfectly through twenty metres of line wire, but that when the distance was increased to one hundred metres the results were not so good, the current then proving to be insufficient.
What to read after A History of Electric Telegraphy, to the Year 1837?
You can find similar books in the "Read Also" column, or choose other free books by Fahie, J. J. (John Joseph), 1846-1934 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It is evident that when a current passed, for example, through the coil i, the armature e, would be attracted, and the hammer attached to the other end of the lever would descend and strike the bell h. To prevent the sticking of the armature it was provided on its under surface with a thin plate of ivory. The ordinary clockwork alarum 0, d, 0", 0"', was intended to warn the attendant of the, * T'ydschrift ter bevordering van Nyverheid, vol. v. part 2.
to the Year 1837.
489 coming of a despatch.... The armature e, in ascending released the detent q, and so set the wheel work in motion.
Fig. 34.
" The current was produced by a pair v, composed of a copper cylinder containing acidulated water, in which was plunged when required another cylinder of zinc. Wires from the copper and zinc poles dipped into little cups of mercury, into which were also plunged as required the terminal wires of the electro- magnets.
" In the above-mentioned paper Professor Stratingh , stated that experiments made with this apparatus before the Physical Society of Groninque succeeded perfectly through twenty metres of line wire, but that when the distance was increased to one hundred metres the results were not so good, the current then proving to be insufficient.
What to read after A History of Electric Telegraphy, to the Year 1837?
You can find similar books in the "Read Also" column, or choose other free books by Fahie, J. J. (John Joseph), 1846-1934 to read onlineMoreLess
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