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Makers of the TelegraphSamuel Morse, Ezra Cornell and Joseph Henry【電子書籍】[ Kenneth B. Lifshitz ]

Item Number 24

<p>The single-wire telegraph revolutionized long distance communication but it was not the brainchild of one inventor, Samuel Morse. His colleagues and employeesーspecifically Ezra Cornell and Joseph Henryーmade crucial contributions. Examining the careers of the three men and the key events, this book presents Morse as primarily a businessman and consolidator of ideas who, frequently in conflict with his associates, sought to present the telegraph as a uniform system under his sole imprimatur. The battle between Morse and Cornell over the invention of the magnetic relay was central to the drama. What emerges is a complex portrait of three ambitious and brilliant innovators and the age in which they lived.</p>画面が切り替わりますので、しばらくお待ち下さい。

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Item Number 24

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