Half-life is the time it takes for half of the undecayed nuclei to decay, crucial in carbon dating.
Half-life is defined as the time it takes for half of the undecayed nuclei to decay. In carbon-14 dating, the half-life of carbon-14 is 5730 years. This means that after 5730 years, half of the original carbon-14 in a sample would have decayed to nitrogen-14.
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