carbon 14
Noun
Meaning
a radioactive isotope of carbon
Source: WordNetAlternative names
carbon-14
Synonyms
Hypernyms
Related terms
Examples
After an organism has been dead for 60,000 years, so little carbon-14 is left that accurate dating can not be established.
As an example, the radioactive decay of carbon-14 is exponential with a half-life of 5,730 years.
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.
For instance, carbon-14 has a half-life of 5,730 years.
Further study with carbon-14 tracers showed that the average cholesterol level was about 50 percent of that of an average American.
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.