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Many inventions improved the quality of radio, and amateurs experimented with uses of radio, thus planting the first seeds of broadcasting. Telefunken The company Telefunken was founded on May 27, 1903, as "Telefunken society for wireless telefon" of Siemens & Halske (S & H) and the Allgemeine Elektrizitäts-Gesellschaft ( General Electricity ...
Bing Crosby became the first major proponent of magnetic tape recording for radio, and he was the first to use it on network radio, after he did a demonstration program in 1947. [33] [35] Tape had several advantages over earlier recording methods. Running at a sufficiently high speed, it could achieve higher fidelity than both electrical ...
This is a list of early pre-recorded sound and part or full talking feature films made in the United States and Europe during the transition to sound, between 1926 and 1929. [1] During this time a variety of recording systems were used, including sound on film formats such as Movietone and RCA Photophone , as well as sound on disc formats like ...
Empire of the Air: The Men Who Made Radio is a non-fiction book by Tom Lewis, which traces the early development of radio broadcasting in the United States, published by HarperCollins in 1991. [2] The book was adapted into both a 1992 documentary film by Ken Burns and a 1992 radio drama written and directed by David Ossman . [ 3 ]
Although development of the first radio wave communication system is attributed to Guglielmo Marconi, his was just the practical application of 80 years of scientific advancement in the field including the predictions of Michael Faraday, the theoretical work of James Clerk Maxwell, and the experimental demonstrations of Heinrich Rudolf Hertz. [1]
His achievements included the first transmission of speech by radio (1900), and the first two-way radiotelegraphic communication across the Atlantic Ocean (1906). In 1932 he reported that, in late 1906, he also made the first radio broadcast of entertainment and music, although a lack of verifiable details has led to some doubts about this claim.
Before the discovery of electromagnetic waves and the development of radio communication, there were many wireless telegraph systems proposed and tested. [4] In April 1872 William Henry Ward received U.S. patent 126,356 for a wireless telegraphy system where he theorized that convection currents in the atmosphere could carry signals like a telegraph wire. [5]
Many made use of monochromatic film tinting dye baths, some had the frames painted in multiple transparent colours by hand, and since 1905 there was a mechanized stencil-process (Pathécolor). Kinemacolor, the first commercially successful cinematographic colour process, produced films in two colours (red and cyan) from 1908 to 1914.