Carbindating

It is not uncommon for a cosmic ray to collide with an atom in the atmosphere, creating a secondary cosmic ray in the form of an energetic neutron, and for these energetic neutrons to collide with nitrogen atoms.

When the neutron collides, a nitrogen-14 (seven protons, seven neutrons) atom turns into a carbon-14 atom (six protons, eight neutrons) and a hydrogen atom (one proton, zero neutrons).

Liquid scintillation counting is another radiocarbon dating technique that was popular in the 1960s.

Maybe one in a trillion carbon atoms are carbon-14.An age could be estimated by measuring the amount of carbon-14 present in the sample and comparing this against an internationally used reference standard.The impact of the radiocarbon dating technique on modern man has made it one of the most significant discoveries of the 20th century.The carbon-14 atoms are always decaying, but they are being replaced by new carbon-14 atoms at a constant rate.At this moment, your body has a certain percentage of carbon-14 atoms in it, and all living plants and animals have the same percentage.

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