Geologist Ralph Harvey and historian Mott Greene explain the principles of radiometric dating and its application in determining the age of Earth. As the uranium in rocks decays, it emits subatomic particles and turns into lead at a constant rate. Measuring the uranium-to-lead ratios in the oldest rocks on Earth gave scientists an estimated age of the planet of 4.
Radiometric dating, often called radioactive dating, is a technique used to determine the age of materials such as rocks.
The University of Ioannina Archaeometry Center. Search this site. The Archaeometry Center.
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