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... Datação por carbono - 14
A diversidade tropical. Ele pode ser encarado de duas maneiras. Ford, Vavilov. O modelo foi apelidado de "teoria", foi apoiado e foi combatido. Atualidade e perspectivas.
The decay constant has dimensions of reciprocal seconds. In the special case in which parent and daughter atoms are present in equal quantities, the age of the specimen is the half-life of the parent isotope:. The various isotope dating methods rely upon several assumptions. They are:. The first assumption, that the amount of the daughter isotope in the original rock is known, is the weakest assumption. For example, K-Ar dating assumes that there was no argon in the original rock.