Archaeology radiocarbon dating
This process of ingesting C-14 continues as long as the plant or animal remains alive.The C-14 within an organism is continually decaying into stable carbon isotopes, but since the organism is absorbing more C-14 during its life, the ratio of C-14 to C-12 remains about the same as the ratio in the atmosphere.This is not an example of the work written by our professional essay writers.Any opinions, findings, conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of UK Essays.The Method of Carbon-14 Technique Archaeologists rely on the various radiometric dating techniques- based on the radioactive properties of unstable chemical atoms to determine the age of the materials. In the biosphere carbon-14 is created by the collision of a neutron, exited by the cosmic ray collides with a nitrogen atom.
Animals eating those plants in turn absorb Carbon-14 as well as the stable isotopes.
When the organism dies, the ratio of C-14 within its carcass begins to gradually decrease.
The rate of decrease is 1/2 the quantity at death every 5,730 years. The animation provides an example of how this logarithmic decay occurs.
The carbon dating technique takes the assumption that all livings have fairly same percentage of 14C isotope in their body and also that the ratio of carbon-12 to carbon -14 present in the biosphere and inside the living plants and animals remain constant. "The Remarkable Metrological History Of Radiocarbon Dating [II]." Journal of Research of the National Institute of Standards and Technology 109.2 (2004): 185-217 Higham, Thomas.
After the death of the organism the carbon intake is stopped.