Sentence using radiocarbon dating
Carbon-14 has a half-life of 5,730 ± 40 years—, half the amount of the radioisotope present at any given time will undergo spontaneous disintegration during the succeeding 5,730 years. It has proved to be a versatile technique of dating fossils and archaeological specimens from 500 to 50,000 years old.
Because carbon-14 decays at this constant rate, an estimate of the date at which an organism died can be made by measuring the amount of its residual radiocarbon. The method is widely used by Pleistocene geologists, anthropologists, archaeologists, and investigators in related fields.
It requires a radium salt of high radioactivity to be at all comparable in effectiveness with a good water-dropper.
Radioactive dating is also known as Radiometric dating. Samples are exposed to neutrons in a nuclear reactor.
How do you tell how old a fossil is by the rock layer?