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LEE DE FOREST
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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: No - Property: No
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Rights questions?
Image size:
2934 x 3774 px | 31.7 MB
Print size:
24.8 x 32.0 cm | 9.8 x 12.6 in (300 dpi)
Keywords:
