beta decay

noun
|Updated on: 29 Apr 2018

Definition of beta decay

: a radioactive nuclear transformation governed by the weak force in which a nucleon (such as a neutron) changes into a nucleon (such as a proton) of the other type with the emission of either an electron and an antineutrino or a positron and a neutrino

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First Known Use of beta decay

1931

in the meaning defined above

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