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Unformatted text preview: Quick Facts:- First Radio Broadcast: Reginald Fessenden, Christmas Eve, 1906- First Radio network company: NBC 1926- First “Top 40” radio broadcasts: 1952- First public Demonstration on Live TV The Inventors- Early inventors and inventions paved the way for electronic mass media- James Maxwell and Heinrich Hertz demonstrated the existence of electromagnetic radiation- Guglielmo Marconi – started experimenting with radio transmitters and receivers. Eventually he developed a powerful wireless business.- Reginald Fessenden – tested his alternator on Christmas Eve, 1906, demonstrated that voice could be transmitted over the “ether.” o Fessenden’s alternator produced a continuous wave that was needed for transmission of voice of music Lee De Forest and the Invisible Empire- De Forest’s “Audion” made it possible to amplify weak radio signals- The Audion modified the “Fleming valve” by inserting a wire grid between the plate of the tube and its cathode....
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- Fall '07