Carbon has isotopes with atomic weights between 9 and Aa Aa Aa. The calculations to be performed on the measurements taken depend on the technology used, since beta counters measure the sample's radioactivity whereas AMS determines the ratio of the three different carbon isotopes in the sample. They synthesized 14 C using the laboratory's cyclotron accelerator and soon discovered that the atom's half-life was far longer than had been previously thought. John Wiley and Sons The advent of radiocarbon dating may even have led to better field methods in archaeology, since better data recording leads to firmer association of objects with the samples to be tested.
In nature, carbon exists as two stable, nonradioactive isotopes:
Dating Rocks and Fossils Using Geologic Methods
Several formats for citing radiocarbon results have been used since the first samples were dated. Unlike a normal atom, an isotope undergoes decay, or breaks down. Key Points Determining the ages of fossils is an important step in mapping out how life evolved across geologic time. Creation Research Society Quarterly. The resulting data, in the form of a calibration curve, is now used to convert a given measurement of radiocarbon in a sample into an estimate of the sample's calendar age.