Adult cell chat dating google lynn manila trixy yahoo - Carbon dating the age of the earth
In order to function properly, natural clocks need an irreversible process that occurs at a constant and known rate.
Nuclear decay has a constant rate of decay, but as it turns out, the formation of C has been reliably calibrated to tens of thousands of years.
Carbon-14 is a radioactive isotope formed in the upper atmosphere.
It is constantly being produced by a system in which cosmic rays from the sun hit atoms, releasing neutrons. Carbon-14 becomes a part of the mostly homogenous mixture of air in the atmosphere.
A detailed description of radiocarbon dating is available at the Wikipedia radiocarbon dating web page.