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Wikipedia definition
1. Carbon-14Carbon-14, C, or radiocarbon, is a radioactive isotope of carbon with a nucleus containing 6 protons and 8 neutrons. Its presence in organic materials is the basis of the radiocarbon dating method pioneered by Willard Libby and colleagues (1949), to date archaeological, geological, and hydrogeological samples.
Read “Carbon-14” on English Wikipedia
Read “炭素14” on Japanese Wikipedia
Read “Carbon-14” on DBpedia

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