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A MOMENT IN HISTORY

The first controlled nuclear chain reaction

1942 CE · United States, North America · Science

The first controlled nuclear chain reaction
Image via Wikimedia Commons

Chicago Pile-1 (CP-1) was the first artificial nuclear reactor. On 2 December 1942, the first human-made self-sustaining nuclear chain reaction was initiated in CP-1 during an experiment led by Enrico Fermi.

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