An early radio vacuum tube. Carl W. Mitman, Curator of Engineering at the United States National Museum, holding an early radio vacuum tube. It was ma

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An early radio vacuum tube. Carl W. Mitman, Curator of Engineering at the United States National Museum, holding an early radio vacuum tube. It was made in 1898 by D. McFarlan Moore of New York. Radio waves emanating from this tube ignited a bomb a city block away. Photographed in 1924.

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Size: 5354px × 3957px
Photo credit: © LIBRARY OF CONGRESS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., 1898, 1924, 19th, 1st, 20th, 50s, america, american, apparatus, black, carl, caucasian, century, component, curator, daniel, device, diode, early, electrical, electronic, engineering, historical, history, male, man, mcfarlan, mitman, monochrome, moore, museum, national, north, portrait, radio, states, technological, technology, tube, united, vacuum, valve, waves, white