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It makes no sense at all if man appeared at the end of billions of years.
We will deal with carbon dating first and then with the other dating methods.
Libby in the late 1940s, has significantly improved the accuracy of assigning dates to past events and artifacts as far back as 70,000 years.
It is helping archaeologists, geologists, and anthropologists reconstruct the world’s history by filling in some of the many blank dates Although radiocarbon dating methods have improved tremendously, Libby’s overall methodology is still utilized and accepted as a dating technique.
This carbon dioxide includes the stable, common isotope carbon-12 and also tiny amounts of radioactive carbon-14.
Familiar to us as the black substance in charred wood, as diamonds, and the graphite in “lead” pencils, carbon comes in several forms, or isotopes.The amount of cosmic rays reaching the Earth varies with the sun's activity, and with the Earth's passage through magnetic clouds as the solar system travels around the Milky Way galaxy.The strength of the Earth's magnetic field affects the amount of cosmic rays entering the atmosphere.It is based upon the fact that carbon-14 is a radioactive, unstable isotope of carbon-12 since its molecular composition has two more neutrons than protons.Carbon-14 is made when cosmic rays enter the earth’s atmosphere and collide with nitrogen atoms.
Furthermore, different types of plants discriminate differently.