Lee De Forest (1873-1961),US inventor. De Forest made numerous inventions,but is remembered most for his invention of the Audion,a vacuum tube that could amplify signals. This photograph is courtesy of the DeForest Laboratories,New York. It was published in 'The March of Commerce' (1927),volume 4 of 'The Pageant of America: A Pictorial History of the United States'. This was a 15-volume series that commemorated 150 years since the founding of the USA in 1776 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / NEW YORK PUBLIC LIBRARY / MIRIAM AND IRA D. WALLACH DIVISION OF ART, PRINTS AND PHOTOGRAPHS |
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