Half lives used carbon dating

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The rate at which a radioactive isotope decays is measured in half-life.

Another way to look at this is that if the radiation intensity is cut in half; the source will have only half as many curies as it originally had.As we have mentioned before each radioactive isotope has its own decay pattern.Not only does it decay by giving off energy and matter, but it also decays at a rate that is characteristic to itself.Age determinations can also be obtained from carbonate deposits such as calcite, dissolved carbon dioxide, and carbonates in ocean, lake, and groundwater sources.Cosmic rays enter the earth's atmosphere in large numbers every day and when one collides with an atom in the atmosphere, it can create a secondary cosmic ray in the form of an energetic neutron.

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