Noun
a radioactive isotope of carbon
Source: WordNetcarbon-14
After an organism has been dead for 60,000 years, so little carbon-14 is left that accurate dating can not be established. Source: Internet
As an example, the radioactive decay of carbon-14 is exponential with a half-life of 5,730 years. Source: Internet
A quantity of carbon-14 will decay to half of its original amount (on average) after 5,730 years, regardless of how big or small the original quantity was. Source: Internet
For instance, carbon-14 has a half-life of 5,730 years. Source: Internet
Further study with carbon-14 tracers showed that the average cholesterol level was about 50 percent of that of an average American. Source: Internet
However, local eruptions of volcanoes or other events that give off large amounts of carbon dioxide can reduce local concentrations of carbon-14 and give inaccurate dates. Source: Internet