The Telephone, The Microphone And The Phonograph is a book written by Theodore Du Moncel and originally published in 1879. The book explores the three groundbreaking inventions of the late 19th century: the telephone, the microphone, and the phonograph. Du Moncel provides a detailed account of the history, development, and scientific principles behind each of these inventions, as well as their practical applications and impact on society. The first...