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Books Books 1 - 10 of 18 on ... the needle would resume its ordinary position under the influence of the magnetism....
" ... the needle would resume its ordinary position under the influence of the magnetism of the earth. I informed him that I had devised another method of producing effects somewhat similar. This consisted in opening the circuit of my large quantity magnet... "
History, Theory, and Practice of the Electric Telegraph - Page 413
by George Bartlett Prescott - 1860 - 468 pages
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The Electro Magnetic Telegraph: With an Historical Account of Its Rise ...

Laurence Turnbull - Telegraph - 1853 - 264 pages
...founded in part upon the experiments of Prof. Henry, who had, previous to this, "opened the circuit of a large quantity magnet at Princeton, when loaded with...with a long wire circuit and an intensity battery." patent, containing improvements in the electric telegraph, was taken out on the 1st of May, 1849: The...
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Shaffner's Telegraph Companion: Devoted to the Science and Art ..., Volumes 1-2

Telegraph - 1854
...when the needle would resume its ordinary position under the influence of the magnetism of the earth. I informed him that I had devised another method of...large quantity magnet, at Princeton, when loaded with many hundred pounds weight, by attracting upward a small piece of moveable wire with a small intensity...
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Annual Report

Smithsonian Institution - Science - 1858
...when the needle would resume its ordinary position under the influence of the magnetism of the earth. I informed him that I had devised another method of...large quantity magnet at Princeton, when loaded with many hundred pounds weight, by attracting upward a small piece of moveable wire, with a small intensity...
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THE MISCELLANEOUS DOCUMETNS PRINTED BY ORDER OF THE HOUSE OF REPRESENTATIVES.

THE HOUSE OF REPRESENTATIVES - 1858
...when the needle would resume its ordinary position under the influence of the magnetism of the earth. I informed him that I had devised another method of...large quantity magnet at Princeton, when loaded with many hundred pounds weight, by attracting upward a small piece of moveable wire, with a small intensity...
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miscellaneous collections

JAMES C. BOOTH, AND CAMPBELL MORFIT. - 1862
...when the needle would resume its ordinary position under the influence of the magnetism of the earth. I informed him that I had devised another method of...large quantity magnet at Princeton, when loaded with many hundred pounds weight, by attracting upward a small piece of moreable wire, with a small intensity...
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Smithsonian Miscellaneous Collections, Volume 2

Science - 1862
...when the needle would resume its ordinary position under the influence of the magnetism of the earth. I informed him that I had devised another method of...large quantity magnet at Princeton, when loaded with many hundred pounds weight, by attracting upward a small piece of moveable wire, with a small intensity...
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Authorship of the Practical Electric Telegraph of Great Britain: Or, The ...

Thomas Fothergill Cooke - Telegraph - 1868 - 131 pages
...amongst other things exhibited to us /'s method of bringing into action a second galvanic circuit. I informed him that I had devised another method of...similar. This consisted in opening the circuit of my large-quantity magnet at Princeton, when loaded with many hundred pounds weight, by attracting upwards...
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A memorial of Samuel F.B. Morse, from the city of Boston

Boston Mass, city council - 1872
...different purpose. Of the necessity of the relay as a means * Professor Henry opened the circuit of a large quantity magnet at Princeton, when loaded with...several hundred pounds, by attracting upwards a small movable wire, by means of a small intensity magnet, connected with a long wire circuit and an intensity...
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Journal, Volume 8

Electricity - 1879
...second galvanic circuit ; .this consisted in closing the second circuit by the deflection of a needle. I informed him that I had devised another method of...similar ; this consisted in opening the circuit of a large quantity magnet by attracting a movable wire by a small ' intensity magnet,' or magnet wound...
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The Proceedings of the Institution of Electrical Engineers, Volume 8

Electrical engineering - 1879
...second galvanic circuit ; this consisted in closing the second circuit by the deflection of a needle. I informed him that I had devised another method of...similar ; this consisted in opening the circuit of a large quantity magnet by attracting a movable wire by a small ' intensity magnet,' or magnet wound...
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