Start Dating with radioisotope

Dating with radioisotope

Because atmospheric carbon 14 arises at about the same rate that the atom decays, Earth's levels of carbon 14 have remained fairly constant.

Most carbon consists of the isotopes carbon 12 and carbon 13, which are very stable.

In this equation, the units of measure for N and No can be in grams, atoms, or moles.

It does not matter as long as they are like measures.

, where r is a measurement of the rate of decay, k is the first order rate constant for the isotope, and N is the amount of radioisotope at the moment when the rate is measured.