After one half-life has elapsed, one half of the atoms of the nuclide in question will have decayed into a "daughter" nuclide or decay product. Also notice that the half-life is different for these two processes. In radioactive atoms the nucleus will spontaneously change into another type of nucleus. Determine the half-lives for the other three isotopes and enter your estimate into the text fields below each graph. For dates up to a few million years micastektites glass fragments from volcanic eruptionsand meteorites are best used. It's a first ordered reaction which means that it doesn't matter how much material we start with, we always will have the same half-live.
The carbon dating limit lies around 58, to 62, years.
As was discussed in previous pages, the steps that go up and to the left are beta decay reactions. Radioactive dating gives the solidification age. This can reduce the problem of contamination. Try refreshing the page, or contact customer support. The effect is compounded.