Radiocarbon dating decay

View the full list Radiocarbon dating has transformed our understanding of the past 50,000 years.

Rachel Wood does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

The uncalibrated date is given with the unit BP (radiocarbon years before 1950).

The calibrated date is also presented, either in BC or AD or with the unit cal BP (calibrated before present - before 1950).

Radiocarbon dating works by comparing the three different isotopes of carbon.

Isotopes of a particular element have the same number of protons in their nucleus, but different numbers of neutrons.

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