14 in carbon 14 dating

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The researchers found that year-of-death determinations based on nails were accurate to within three years.

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In recent years, forensic scientists have started to apply carbon-14 dating to cases in which law enforcement agencies hope to find out the age of a skeleton or other unidentified human remains.All the people whose tissues were tested for the study were residents of the United States.Atmospheric dispersion tends to create uniform levels of carbon-14 around the globe, and researchers believe that these would be reflected in human tissues regardless of location.The researchers found that if they assumed tooth enamel radiocarbon content to be determined by the atmospheric level at the time the tooth was formed, then they could deduce the year of birth.They found that for teeth formed after 1965, enamel radiocarbon content predicted year of birth within 1.5 years.

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