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, where r is a measurement of the rate of decay, k is the first order rate constant for the isotope, and N is the amount of radioisotope at the moment when the rate is measured.
The rate of decay is often referred to as the activity of the isotope and is often measured in Curies (Ci), one curie = 3.700 x 10" is the initial amount of radioisotope at the beginning of the period, and "k" is the rate constant for the radioisotope being studied.
It should be noted that it is not the artefact that is being dated, it is the soot, ash or charring.
This allows corrections to be made on radiocarbon dates in order to produce more accurate dates.
Radiocarbon dating, or carbon-14 dating, can be used to date material that had its origins in a living thing as long as the material contains carbon.
This rather complex formula shows you how to solve this puzzle using accepted scientific methods.
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