The use of radioactive decay of certain elements to estimate the age of a rock containing these elements is an extremely attractive idea. It bears a close analogy to a sand glass used as an egg timer. Just as sand, initially in the top (see Fig. 1) eventually ends up in the bottom, so uranium will eventually become lead. In both cases , the time for the process to take place can be presumed to be known with sufficient precision for the purpose.


Radiometric dating, creationism


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