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Lee de Forest, American electrical engineer and inventor, c 1936

Lee de Forest, American electrical engineer and inventor, c 1936
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IMAGE number
UIS5074798
Image title
Lee de Forest, American electrical engineer and inventor, c 1936
Auto-translated text View Original Source
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Unknown
Location
Science Museum, London, UK
Medium
photography
Image description

Lee de Forest, American electrical engineer and inventor, c 1936. De Forest (1873-1961) was principally known for his invention of the Audion in 1906. The Audion was a vacuum tube device that could take weak telegraph or radio signals and amplify them. Soon audions were being used in radios and and were installed to boost voice signals as they crossed the US continent. In 1921 De Forest also contributed to the film industry when he used electricity to improve sound recordings. This achievement led directly to the creation of motion picture with sound. Photograph by Joseph Capitaine. ©SSPL/Science Museum

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SSPL/UIG / Bridgeman Images
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portrait

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