In beta minus decay, a neutron is converted to a proton via the weak nuclear force and a beta particle (an electron) and a neutrino are emitted. Beta decay was first studied by Enrico Fermi.
The study of beta decay provided the first physical evidence of the neutrino.
See also: beta particle, particle radiation, radioactive isotope
... 100 females there are 90.6 males. For every 100 females age 18 and over, there are 89.4 males.
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