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How Carbon Dating Works (Half Life) - GCSE Physics
Carbon dating (radiocarbon dating) is used to determine how old certain objects are. For example, we can determine the age of a tree trunk - how long ago was it chopped down? When a tree photosynthesizes, it takes in carbon dioxide, meaning that it absorbs an isotope called carbon-14. Carbon-14 is an unstable isotope that decays into a more ...
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