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    Corbon dating

    Through the life of the organism, the proportion of C-14 to C-12 reaches the same proportion as in the rest of the environment.When the organism dies, however, it ceases to incorporate carbon into its body. uncalibrated, radiocarbon ages are usually reported in radiocarbon years "Before Present" (BP), "Present" being defined as AD 1950.Such raw ages can be calibrated to give calendar dates.One of the most frequent uses of radiocarbon dating is to estimate the age of organic remains from archaeological sites.When plants fix atmospheric carbon dioxide (COC that approximately matches the level of this isotope in the atmosphere (a small difference occurs because of isotope fractionation, but this is corrected after laboratory analysis).Note: Many of our articles have direct quotes from sources you can cite, within the Wikipedia article! One of the most frequent uses of radiocarbon dating is to estimate the age of organic remains from archaeological sites.

    So I did a bit of research to fill in the gaps in my understanding, and not surprisingly I found the details to be quite interesting.What did surprise me was the huge number of Web sites and books vigorously attacking the legitimacy of what I had thought was a fairly straightforward, uncontroversial test.Apparently carbon dating is right up there with evolution in terms of the disdain it evokes from certain religious groups.Emilio Segrè asserted in his autobiography that Enrico Fermi suggested the concept to Libby in a seminar at Chicago that year.Libby estimated that the steady state radioactivity concentration of exchangeable carbon-14 would be about 14 disintegrations per minute (dpm) per gram.

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