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A MOMENT IN HISTORY

James Chadwick discovers the neutron

1932 CE · United Kingdom, Europe · Science

James Chadwick discovers the neutron
Image via Wikimedia Commons

A neutron is a subatomic particle, symbol n or n0, that has no electric charge, and a mass slightly greater than that of a proton. The neutron was discovered by James Chadwick in 1932, leading to the discovery of nuclear fission in 1938, the first self-sustaining nuclear reactor, and the first nuclear weapon.

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