Additionally, elements may exist in different isotopes, with each isotope of an element differing in the number of neutrons in the nucleus.
Because of the many different applications of Ox Cal, it is important that there is a well defined internal time-scale.
Together with stratigraphic principles, radiometric dating methods are used in geochronology to establish the geological time scale.
These techniques, unlike carbon dating, mostly use the relative concentrations of parent and daughter products in radioactive decay chains.When a “date” differs from that expected, researchers readily invent excuses for rejecting the result.Radiometric dating or radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed.The main functions that are used are: The type function Number() allows a general numerical parameter to be defined by an expression.The reason for a statistical analysis of radiocarbon dates, is the FACT that, theoretically, no experimental result is absolute, and to some extent, subject to chance error. The British Museum, selected the Chi^2 to be the criterion for the assessment of the radiocarbon dating results for the Shroud.