Project Gutenberg 2017-10-21 Public domain in the USA. 206 Bell, Alexander Graham 1847 1922 Bell, A. Graham (Alexander Graham) Bolton, Frank 1830 1887 Bolton, Francis John Langdon, William Edward 1832 1905 94168529 The telephone : $b a lecture entitled Researches in electric telephony Produced by Chris Curnow, Paul Marshall and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) "The telephone: a lecture entitled Researches in electric telephony" by Alexander Graham Bell is a scientific publication delivered in the late 19th century. The book contains an account of Bell's experiments and discoveries related to electric telephony, focusing particularly on the principles and mechanisms behind sound production through electrical means. It reflects a period of significant scientific advancement and innovation in telecommunications. In this lecture, Bell discusses his extensive research into the mechanics of sound and speech, building on previous studies including those by his father and other scientists. He explains the various types of electrical currents that can produce sound and details his development of the telephone, including the use of tuning-forks and the invention of apparatus that captures and conveys articulate speech electrically. Bell recounts the experimental process that led to the first successful transmission of vocal sounds over a distance, highlighting both his successes and the challenges faced in perfecting the technology that would ultimately revolutionize communication. (This is an automatically generated summary.) Reading ease score: 58.3 (10th to 12th grade). Somewhat difficult to read. en Telephone TK Text Category: Science - Physics Category: Engineering & Technology 108727 2025-07-22T09:03:12.957708 text/html 84687 2024-10-23T02:46:54 text/html 1626946 2025-07-22T09:03:16.131750 application/epub+zip 1627099 2025-07-22T09:03:13.711715 application/epub+zip 96928 2025-07-22T09:03:13.319703 application/epub+zip 1667723 2025-07-22T09:03:17.976716 application/x-mobipocket-ebook 1652579 2025-07-22T09:03:15.751730 application/x-mobipocket-ebook 130496 2022-08-25T07:26:40.755941 application/x-mobipocket-ebook 81892 2025-07-22T09:03:12.575719 text/plain; charset=us-ascii 61952 2024-10-23T02:46:54 text/plain; charset=us-ascii 17150 2025-07-22T09:03:18.120687 application/rdf+xml 11449 2025-07-22T09:03:13.397698 image/jpeg 2664 2025-07-22T09:03:13.358708 image/jpeg 1634140 2025-07-22T09:03:13.032729 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia