How accurate is radioactive dating of materials

The rate of decay (given the symbol λ) is the fraction of the 'parent' atoms that decay in unit time.

For geological purposes, this is taken as one year.

So, we rely on radiometric dating to calculate their ages.This can be done very accurately, although some samples may be difficult to work with.Beyond this, the accuracy of the date depends on the reliability of the assumptions used in interpreting the measurements (see below).Carbon-14 dating does not produce ages in the millions of years, as do some other types of radioisotope dating.C dating consists of measuring the amounts of carbon-14 and carbon-12, and sometimes C-13, in a sample. It is widely used in dating fossils or archaeological samples containing organic material such as wood, charcoal, bone, shells, etc.

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