The History and Progress of the Electric Telegraph: With Descriptions of Some of the Apparatus

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D. Van Nostrand, 1869 - 280 Seiten
 

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Seite 5 - he felt himself struck in his arms, shoulders, and breast, so that he lost his breath, and was two days before he recovered from the effects of the blow and the terror.
Seite 11 - ... and his wife, by remarking the corresponding motions of the ball, writes down the words they indicate: from which it appears he has formed an alphabet of motions. As the length of the wire makes no difference in the effect, a correspondence might be carried on at any distance...

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