Explore Bell’s early experiments that turned sound into electricity and back, tracing the birth of electric telephony.
This edition gathers Bell’s 1877 lecture, where he describes the experiments, ideas, and practical steps that led from acoustic tones to electrical signals. Readers will see how he drew on Helmholtz’s work, experimented with membranes, reeds, and phonautographs, and envisioned methods to teach the deaf to speak. The narrative reflects a mind testing new ways to capture and reproduce sound, and it reveals both the challenges and the breakthroughs on the road to the telephone.
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Excerpt from The Telephone: A Lecture Entitled, Researches in Electric Telephony, Delivered Before the Society of Telegraph Engineers, October 31st, 1877
The president: Gentlemen, the Council of the Society of Telegraph Engineers felt that they were sure of doing what the members would consider right in summoning a special meeting for the two-fold purpose of giving a welcome to Professor Bell to this country and affording the Members an opportunity of hearing from him an account, which he has been so good as to promise to give us, of the nature, history, and development of, what may well be called, one of the most interesting discoveries of our age. Our time is very precious this evening. We all desire to hear everything Professor Bell can tell us on this subject, and many gentlemen will probably desire afterwards to ask questions or discuss the subject, for I see present a great number of eminent scientific men. I will not waste another moment, but at once call upon Professor Bell to commence his discourse on the Electric Telephone.
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Seller: Forgotten Books, London, United Kingdom
Paperback. Condition: New. Print on Demand. This book delves into the history of electric telephony, tracing its evolution from the initial discovery of the mechanism of speech to the invention of the telephone. The author begins by describing his early experiments with tuning forks and the idea of transmitting multiple telegraph messages simultaneously. He discusses the various types of electrical currents used in telephony, including intermittent, pulsatory, and undulatory currents, and explains the advantages and limitations of each. The book also explores the development of the telephone from the early models that could only transmit musical tones to the more advanced versions that allowed for intelligible speech. The author provides detailed descriptions of the various components of the telephone, such as the diaphragm, magnet, and coils, and explains how they work together to produce sound. Overall, this book offers a comprehensive overview of the history of electric telephony, providing valuable insights into the scientific and technological advancements that have shaped this field. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9781330427446_0
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9781330427446
Seller: PBShop.store UK, Fairford, GLOS, United Kingdom
PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9781330427446
Quantity: 15 available