Half life used radiometric dating good tips for dating
In other words, the less of the parent isotope (and the more of the daughter isotope) we measure in a specimen, the older we assume it to be.
Radiocarbon dating is actually of little use to evolutionists. First, no rocks and relatively few fossils contain measurable quantities of carbon of any kind.
This extrapolation is based on the fact that an unstable (radioactive) chemical element, called the parent isotope, breaks down at a presently known rate to form a more stable daughter isotope.
Most people are surprised to learn that there is, in fact, no way to directly determine the age of any fossil or rock.
Second, because of the short half-life of C, the radiocarbon method can only date specimens up to about 50,000 years of age.