有声读物: Masters of Space
- Download Preface audio
- Download Communication Among the Ancients audio
- Download Signals Past and Present audio
- Download Forerunners of the Telegraph audio
- Download Inventions of Sir Charles Wheatstone audio
- Download The Achievement of Morse audio
- Download 'What Hath God Wrought?' audio
- Download Development of the Telegraph System audio
- Download Telegraphing Beneath the Sea audio
- Download The Pioneer Atlantic Cable audio
- Download A Successful Cable Attained audio
- Download Alexander Graham Bell, The Youth audio
- Download The Birth of the Telephone audio
- Download The Telephone at the Centennial audio
- Download Improvement and Expansion audio
- Download Telegraphing Without Wires audio
- Download An Italian Boy's Work audio
- Download Wireless Telegraphy Established audio
- Download The Wireless Serves the World audio
- Download Speaking Across the Continent audio
- Download Telephoning Through Space audio
- Download Appendix A audio
- Download Appendix B audio
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描述
This is the story of talking at a distance, of sending messages through space. It is the story of great men—Morse, Thomson, Bell, Marconi, and others—and how, with the aid of men like Field, Vail, Catty, Pupin, the scientist, and others in both the technical and commercial fields, they succeeded in flashing both messages and speech around the world, with wires and without wires. It is the story of how the thought of the world has been linked together by those modern wonders of science and of industry—the telegraph, the submarine cable, the telephone, the wireless telegraph, and, most recently, the wireless telephone. (From Preface) - Summary by Walter Kellogg Towers
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