Start Carbon dating machine

Carbon dating machine

Stratigraphic dating (dating based on ages of layers above & below fossil). Also called Dating ------------------------------------------------------------------------------------------------------------------------------------ You can not use it to test how old a LIVING person is.

Therefore, other methods such as OSL (Optically Stimulated Luminescence dating) or isotopes with longer half-lives researchers studying US bristle cone pine and German and Irish oaks discovered fluctuations in the C14 concentration.

Measurements of the Libby half-life showed that Libby was about .3% too low.

(2) A half-life is the time needed for half the initial number of radioactive nuclei to disintegrate.