Does radiometric dating tell us past
The decay rate and therefore the half-life are fixed characteristics of a nuclide. Thats the first axiom of radiometric dating techniques: the half-life of a given nuclide is a constant.(Note that this doesnt mean the half-life of an element is a constant.
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And since carbon is an essential element in living organisms, C14 appears in all terrestrial ( get C14 from the environment.
Some nuclides have very long half-lives, measured in billions or even trillions of years.
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