Project Gutenberg 2008-12-20 Public domain in the USA. 128 Du Moncel, Th., comte 1821 1884 Du Moncel, Théodore A. L. (Théodore Achille Louis), comte Du Moncel, Theodore A. L. (Theodore Achille Louis), comte Du Moncel, Théodose Achille Louis, comte Du Moncel, Theodose Achille Louis, comte Moncel, Théodore Du Moncel, Th. du, comte Bonnafoux, B. Bonnafoux, L. 17019995 Le Téléphone, le Microphone et le Phonographe Produced by Laurent Vogel, Christine P. Travers and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by the Bibliothèque nationale de France (BnF/Gallica) at http://gallica.bnf.fr) "Le Téléphone, le Microphone et le Phonographe" by comte Th. Du Moncel is a scientific publication written in the late 19th century. This work explores the historical and technical developments surrounding the telephone, microphone, and phonograph, detailing the scientific principles that led to these revolutionary inventions. The text discusses various inventors and their contributions to the field of sound transmission, emphasizing the progression of technology in acoustics. The opening of this scientific exploration presents a historical overview of the telephone's origins, tracing back to ancient methods of sound transmission and moving through significant developments leading to the invention of the telephone. It introduces prominent figures in the field, such as Graham Bell and Elisha Gray, and outlines their experimental works leading to the eventual success in transmitting voice electronically. The section also references early theories and experiments about acoustics, establishing a foundation for understanding the mechanisms that made the telephone possible. (This is an automatically generated summary.) Reading ease score: 50.9 (10th to 12th grade). Somewhat difficult to read. fr Telephone Microphone Phonograph TK Text Technology FR Sciences et Techniques Category: History - Modern (1750+) Category: Science - Physics Category: Engineering & Technology 569370 2025-07-11T09:54:32.368887 text/html 550049 2021-01-04T12:52:01 text/html 1914382 2025-07-11T09:54:41.781343 application/epub+zip 1921811 2025-07-11T09:54:35.841393 application/epub+zip 261449 2025-07-11T09:54:34.401907 application/epub+zip 2177369 2025-07-11T09:54:46.182342 application/x-mobipocket-ebook 2120984 2025-07-11T09:54:40.738432 application/x-mobipocket-ebook 452034 2022-09-12T16:03:30.428623 application/x-mobipocket-ebook 513453 2025-07-11T09:54:31.161899 text/plain; charset=us-ascii 498666 2021-01-04T12:52:01 text/plain; charset=us-ascii 21002 2025-07-11T09:54:46.893313 application/rdf+xml 16066 2025-07-11T09:54:34.915924 image/jpeg 3732 2025-07-11T09:54:34.656879 image/jpeg 167148 2021-01-04T12:52:01 application/octet-stream application/zip 1787366 2021-01-04T12:52:01 application/octet-stream application/zip 1893437 2025-07-11T09:54:32.539930 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 fr.wikipedia