Although carbon 14 atoms are constantly decaying, they are replaced by new carbon 14 atoms at a constant rate.As soon as an organism dies, the carbon 14 atoms stop being replaced.
Radiocarbon or C14 dating employs complex systems of measuring the unstable isotopes in once living matter.
There are three forms of carbon that naturally occur forming the building blocks of all plant and animal life.
We note that at the instant the swimmer touches the end of the pool our wristwatch reads and 53 seconds.
How long has the competitor taken to swim the race?
The theoretical limit for C-14 dating is 100,000 years using AMS, but for practical purposes it is 45,000 to 55,000 years.