Alexanderson with a radio transmitter at Riverhead,New York,USA. Ernst Frederick Werner Alexanderson (1878-1975),Swedish-US engineer,is best-known for designing the Alexanderson alternator,which made voice radio broadcasts possible. This photograph is from a collection of unpublished images,dating from the 1860s to the 1920s,taken for 'The Pageant of America: A Pictorial History of the United States' (1925-1929) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / NEW YORK PUBLIC LIBRARY / MIRIAM AND IRA D. WALLACH DIVISION OF ART, PRINTS AND PHOTOGRAPHS |
Bildgröße: | 2777 px × 3543 px |
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