Radiometric dating is a method used to determine the age of rocks, fossils, and other geological materials by measuring the radioactive decay of isotopes within the sample. This process involves measuring the ratio of parent isotopes to daughter isotopes in a sample, which allows scientists to calculate the age of the material based on the known half-life of the radioactive isotopes involved. Radiometric dating is a widely used technique in geology, archaeology, and other scientific disciplines to establish the age of rocks and artifacts.