Radiocarbon dating used in a sentence
Given relatively pristine circumstances, a radiocarbon lab can measure the amount of radiocarbon accurately in a dead organism for up to 50,000 years ago; after that there's not enough C left to measure. You have to know what the atmospheric carbon level (the radiocarbon 'reservoir') was like at the time of an organism's death, in order to be able to calculate how much time has passed since the organism died.
As explained below, the radiocarbon date tells us when the organism was alive (not when the material was used).
This fact should always be remembered when using radiocarbon dates.
The dating process is always designed to try to extract the carbon from a sample which is most representative of the original organism.
For objects more than about 10,000 years old the results become unreliable.
For objects more than about 10,000 years old the results become unreliable.rbon-12, which is a type of radioactive decay.but if they stand together, we can realize which is the intended meaing, using common sense.