Facts about carbon dating

That’s because uranium converted into lead during radioactive decay took a long period of time.Hence, the amount of lead was directly proportional to its age, meaning, the older the rock the more lead it had.Although, a relic discovered in frozen ice, caves or places whose age remains unknown made it hard to date it in an accurate manner.

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The American chemist Bertram Boltwood was the radiochemistry pioneer who proposed that rocks containing radioactive uranium could be dated by measuring lead amount in it.Carbon-14 is continually formed in nature by the interaction of neutrons with nitrogen-14 in the Earth’s atmosphere; the neutrons required for this reaction are produced by cosmic rays interacting with the atmosphere.Radiocarbon present in molecules of atmospheric carbon dioxide enters the biological carbon cycle: it is absorbed from the air by green plants and then passed on to animals through the food chain.One of the mindblowing uses of radioactivity, carbon dating is based on decay rate of carbon’s radioactive isotope C-14 that is absorbed by all the living organisms while alive.Once they die, no additional C-14 gets accumulated and all the C-14 amount already present decays to N-14 making radioactive emissions.

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