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We look at the formula for beta plus decay. In this context, we look at which conservation laws (nucleon number conservation, charge conservation and lepton number conservation) cause the formula to look the way it does. Finally, we look at an example with Phosphorus-30, which decays via beta plus decay to Silicon-30, an anti-electron (positron) and a neutrino. 0:00 - 2:04 Beta plus decay 2:04 - 3:07 Beta plus decay formula 3:07 - 3:53 Charge conservation 3:53 - 5:07 Lepton number conservation 5:07 - 6:18 Example Phosphorus-30