In nuclear physics and particle physics, the weak interaction, weak force or weak nuclear force, is one of the four known fundamental interactions, with the others being electromagnetism, the strong interaction, and gravitation. It is the mechanism of interaction between subatomic particles that is responsible for the radioactive beta decay of atoms: The weak interaction participates in nuclear fission and nuclear fusion.
In nuclear physics and particle physics, the weak interaction, weak force or weak nuclear force, is one of the four known fundamental interactions, with the others being electromagnetism, the strong interaction, and gravitation. It is the mechanism of interaction between subatomic particles that is responsible for the radioactive beta decay of atoms: The weak interaction participates in nuclear fission and nuclear fusion.
Source: Wikipedia "Weak interaction" · CC BY-SA 4.0
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