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17-Jul-2019 11:43

For most radioactive nuclides, the half-life depends solely on nuclear properties and is essentially a constant.It is not affected by external factors such as temperature, pressure, chemical environment, or presence of a magnetic or electric field.For instance, carbon-14 has a half-life of 5,730 years.After an organism has been dead for 60,000 years, so little carbon-14 is left that accurate dating cannot be established.

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The basic equation of radiometric dating requires that neither the parent nuclide nor the daughter product can enter or leave the material after its formation.Precision is enhanced if measurements are taken on multiple samples from different locations of the rock body.