John Ambrose Fleming

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John Ambrose Fleming, delivering lecture from within a commercial Fleming tube.

John Ambrose Fleming is a crime-fighting secret hero.

He uses the secret identity of Sir John Ambrose Fleming FRS, a British electrical engineer and physicist known for inventing the Fleming tube (the first thermionic valve or vacuum tube).

In the News

Fiction cross-reference

Nonfiction cross-reference

John Ambrose Fleming (nonfiction)

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