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This does not mean that radiometric dates or any other scientific measurements are unreliable.billion years, the chronometric age of a sample can be calculated.This dating method can be used with samples that are as young as a few decades to as old as the earth and beyond.This causes them to give off their stored energy in the form of light impulses (photons). A similar effect can be brought about by stimulating the sample with infrared light.The intensity of thermoluminescence is directly related to the amount of accumulated changes produced by background radiation, which, in turn, varies with the age of the sample and the amount of trace radioactive elements it contains..As a result, there is a changing ratio of carbon-14 to the more atomically stable carbon-12 involves actually counting individual carbon-14 atoms.
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When a sample is heated to high temperatures in a laboratory, the trapped electrons are released and return to their normal positions in their atoms.Over the second half-life, of the atoms remaining decay, which leaves of the original quantity, and so on.
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