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fleming, sir john ambrose in Science

Fleming

  1. British physicist and electrical engineer who devised the first electron tube in 1904. His invention was essential to the development of radio, television, and early computer circuitry. Fleming also helped develop electric devices designed for large-scale use, such as the electric lamp.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.