Joseph Henry And the Magnetic Telegraph
Joseph Henry And the Magnetic Telegraph
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A number of other inventors used static elec- tricity for the same purpose during the latter years of the last century, and the earlier ones of this. In England, Ronalds had a line of eight miles on which the wire was suspended from poles, and insulated by silken strings;* and in 1796, Salva, in Spain, worked a line by static electricity twenty-six miles long. F In the year 1800 Volta produced the voltaic pile, and gave to the world that new manifestation of electricity called galvanism. In tha...t form this subtle agent is far more manageable than in the form of static electricity; and by the use of galvanic batteries a current of low tension, but of enormously greater power, can be maintained with little difficulty; whereas static electricity * See Appendix, Note G. T See Appendix, Note H.
MAGNETIC TELEGRAPH. 35 is like lightning, and readily leaps and escapes from the surfaces on which it is confined. The galvanic current also readily decomposes acid- ulated water, and many other substances, and this capacity was soon applied to the purposes of telegraphy.
What to read after Joseph Henry And the Magnetic Telegraph?
You can find similar books in the "Read Also" column, or choose other free books by E N Edward Nicoll Dickerson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
A number of other inventors used static elec- tricity for the same purpose during the latter years of the last century, and the earlier ones of this. In England, Ronalds had a line of eight miles on which the wire was suspended from poles, and insulated by silken strings;* and in 1796, Salva, in Spain, worked a line by static electricity twenty-six miles long. F In the year 1800 Volta produced the voltaic pile, and gave to the world that new manifestation of electricity called galvanism. In tha...t form this subtle agent is far more manageable than in the form of static electricity; and by the use of galvanic batteries a current of low tension, but of enormously greater power, can be maintained with little difficulty; whereas static electricity * See Appendix, Note G. T See Appendix, Note H.
MAGNETIC TELEGRAPH. 35 is like lightning, and readily leaps and escapes from the surfaces on which it is confined. The galvanic current also readily decomposes acid- ulated water, and many other substances, and this capacity was soon applied to the purposes of telegraphy.
What to read after Joseph Henry And the Magnetic Telegraph?
You can find similar books in the "Read Also" column, or choose other free books by E N Edward Nicoll Dickerson to read onlineMoreLess
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