Before revision: In the decay, an electron and an antineutrino are suddenly ejected at great speed from the tritium nucleus, changing one of the neutrons into a proton with the release of 18,600 eV .
After revision: In the decay, an electron and an antineutrino are suddenly ejected at great speed from the tritium nucleus, changing one of the neutrons into a proton with the release of 18,600 electronvolts (eV) of energy .