Carbon14 dating

Where t is the age of the fossil (or the date of death) and ln() is the natural logarithm function.

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At any particular time all living organisms have approximately the same ratio of carbon 12 to carbon 14 in their tissues.Radiocarbon dating can be used on samples of bone, cloth, wood and plant fibers.The half-life of a radioactive isotope describes the amount of time that it takes half of the isotope in a sample to decay.After 5,730 years, the amount of carbon 14 left in the body is half of the original amount.If the amount of carbon 14 is halved every 5,730 years, it will not take very long to reach an amount that is too small to analyze.