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Now the curve extends (tentatively) to 50,000 years.
Radiocarbon dates are presented in two ways because of this complication.
Australia has two machines dedicated to radiocarbon analysis, and they are out of reach for much of the developing world.
In addition, samples need to be thoroughly cleaned to remove carbon contamination from glues and soil before dating.
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Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon , a radioactive isotope of carbon.
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Radiocarbon dating works by comparing the three different isotopes of carbon.
Isotopes of a particular element have the same number of protons in their nucleus, but different numbers of neutrons.
In the early years of radiocarbon dating a product’s decay was measured, but this required huge samples (e.g. Many labs now use an Accelerator Mass Spectrometer (AMS), a machine that can detect and measure the presence of different isotopes, to count the individual C atoms in a sample.