Creationists claim that argon escape renders age determinations invalid. Login or Sign up.
Homework Help Resource Microbiology: The equation is most conveniently expressed in terms of the measured quantity N t rather than the constant initial value N o. The carbon dating limit lies around 58, to 62, years. Radioactivity occurs when the nucleus contains an excess amount of neutrons. In all his mathematics, R is taken as a constant value. Since all living things contain carbon, carbon is a common radioisotope used primarily to date items that were once living.