Radioactive dating formula

02-Feb-2020 14:33

These break down over time in a process scientists call radioactive decay.Each original isotope, called the parent, gradually decays to form a new isotope, called the daughter.Most directly measure the amount of isotopes in rocks, using a mass spectrometer.Others measure the subatomic particles that are emitted as an isotope decays.Because of their unique decay rates, different elements are used for dating different age ranges.For example, the decay of potassium-40 to argon-40 is used to date rocks older than 20,000 years, and the decay of uranium-238 to lead-206 is used for rocks older than 1 million years.

Understand how decay and half life work to enable radiometric dating.

Some measure the decay of isotopes more indirectly.