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What Enrico Fermi invented?

  • A.X ray machine
  • B.Betatron
  • C.Cyclotron
  • D.Nuclear reactor

Answer: D

Enrico Fermi built the first nuclear reactor.

Chicago Pile-1, a stack of graphite blocks and uranium, went critical on 2 December 1942 under the stands of the university's squash court - the first self-sustaining nuclear chain reaction. The message sent was that the Italian navigator had landed in the new world.

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