Radiocarbon dating is limited to

Radiocarbon dating can easily establish that humans have been on the earth for over twenty thousand years, at least twice as long as creationists are willing to allow.Therefore it should come as no surprise that creationists at the Institute for Creation Research (ICR) have been trying desperately to discredit this method for years.They entered these into a computer model to estimate the most likely dates of transition between the different periods.It is illegal to remove archaeological samples from Egypt, so the researchers dated items from museum collections in Europe and North America, as well as freshly excavated seed samples from Tell es-Sakan on the Gaza Strip, which was an outpost of ancient Egypt.Living organisms are constantly incorporating this C-14 into their bodies along with other carbon isotopes.

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Carbon 14 has a half-life of 5,780 years, and is continuously created in Earth's atmosphere through the interaction of nitrogen and gamma rays from outer space.

Libby thus reasoned that by measuring carbon 14 levels in the remains of an organism that died long ago, one could estimate the time of its death.

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