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Lee de Forest

Lee de Forest

American inventor
Lee de Forest was an American inventor and a fundamentally important early pioneer in electronics. He invented the first practical electronic amplifier, the three-element "Audion" triode vacuum tube in 1906. This helped start the Electronic Age,... Wikipedia
Born: August 26, 1873, Council Bluffs, IA
Died: June 30, 1961 (age 87 years), Hollywood, Los Angeles, CA
Spouse: Marie Mosquini (m. 1930–1961), Mary Mayo (m. 1912–1930), Nora Stanton Barney (m. 1908–1911), and more
Known for: Three-electrode vacuum-tube (Audion), sound-on-film recording (Phonofilm)