Lee De Forest

Lee De Forest (1873-1961), an American inventor, who in 1906 invented the first vacuum tube known as the Audion, which amplifies weak electrical signals. De Forest was a pioneer in the field of electronics, with over 300 patents to his credit.

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Science Source / Science Source

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2015 x 2641 pixels

Print Size @ 300 dpi
7 x 9 inches / 17 x 22 cm

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american, amplifier, de forest, electronics, historic, historical, history, inventor, lee de forest, male, man, people, person, portrait, science, scientist, vacuum tube, audion