= Radiocarbon calibration
{wiki}
<Radiocarbon calibration> converts conventional <radiocarbon ages> into calendar-age information using independently dated material and models of changes in reservoir isotope ratios. Conventional ages use the historical $5568$-year <half-life>, whereas the physical <carbon-14> <half-life> is about $5730$ years.<Radiocarbon calibration by Oxford Radiocarbon Accelerator Unit>[Half-life conventions, changing atmospheric ratios and tree-ring calibration]{ref}
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