In nuclear physics, secular equilibrium is a situation in which the quantity of a radioactive isotope remains constant because its production rate (due, e.g., to decay of a parent isotope) is equal to its decay rate.
Read more about Secular Equilibrium: Secular Equilibrium in Radioactive Decay, See Also
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“When a woman starts out in the world on a mission, secular or religious, she should leave her feminine charms at home.”
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