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Super Scientists - Lee De Forest De Forest Lee De Forest (1873-1961) De Forest invented what he called the "audiontube," or vacuum tube, in 1906 that helped put radio and television broadcasts "on the air." He also ... to jail for attempting to use the U.S. Mail to try to sell his audiontube, which was thought to be worthless at the time. More about Lee De Forest Links ... www.energyquest.ca.gov
