Carbon dating reference

Posted by / 02-Jul-2017 14:57

Carbon-14 dating uses the ratio of radioactive carbon-14 to non-radioactive carbon-12 to determine if the ratio is the same as in living organisms, or if it is lower, indicating that the carbon-14 has decayed during a period of thousands of years.Carbon-14 has a half-life of 5,730 years, which is the amount of time that it takes for half of a given sample of carbon-14 to decay.Carbon-14 dating has a 95 percent accuracy when determining the age of organic material up to 50,000 years old.After 50,000 years, however, the amount of carbon-14 remaining is too low for an accurate reading.

Books, clothing and food remains are all archaeological artifacts that can be carbon dated.The determination of the age of an organic object from the relative proportions of the carbon isotopes carbon-12 and carbon-14 that it contains.The ratio between them changes as radioactive carbon-14 decays and is not replaced by exchange with the atmosphere.Plants take up carbon-14 when they convert CO2 into sugar and build cellular structures.Animals take up carbon-14 when they eat plants or other animals.

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The older technique takes longer and relies on the detection of beta radiation from the decaying carbon-14.

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