It is simply called as radiocarbon dating or Carbon-14 dating. Carbon-14 is a radioactive isotope of carbon, with a half-life of 5,730 years. The carbon-14 decays at this constant rate. It estimates the date at which an organism died by measuring the amount of its residual radiocarbon.It is simply called as radiocarbon dating or Carbon-14 dating. Carbon-14 is a radioactive isotope