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LEE DE FOREST

Lee De Forest (1873-1961), seated at his invention, the radio-telephone, called the audion, a vacuum tube that takes weak electrical signals and amplifies them. Lee De Forest was a prolific American inventor, who was granted over 180 patents, and is credited with helping bring sound to movies.
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Title: LEE DE FOREST
Caption: Lee De Forest (1873-1961), seated at his invention, the radio-telephone, called the audion, a vacuum tube that takes weak electrical signals and amplifies them. Lee De Forest was a prolific American inventor, who was granted over 180 patents, and is credited with helping bring sound to movies.
Credit: Album / Science Source / NEW YORK PUBLIC LIBRARY
Releases: ? Model Release: No - ? Property Release: No
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Image size: 2934 × 3774 px | 31.7 MB
Print size: 24.8 × 32.0 cm | 1155.1 × 1485.8 in (300 dpi)
Keywords: AMERICAN • AMPLIFIER • AUDION • COLOR • DE • DEFOREST • ELECTRICAL • ENGINEER • ENHANCE • ENHANCEMENT • FOREST • HISTORIC • HISTORICAL • HISTORY • INVENTOR (MALE) • INVENTOR • LANDSCAPE • LEE • MALE • MAN • MEN • PEOPLE • PERSON • PORTAIT • PORTRAIT • POTRAIT • RADIO • SAVANT • SCIENTIFIC • SCIENTIST • TELEPHONE • WOODLAND • WOODS