So, we have a “clock” which starts ticking the moment something dies.Obviously, this works only for things which were once living.This will be covered in the chapters, Primitive Environment (chapter 9), and DNA (chapter 10).
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This chain eventually ends with the formation of a stable, nonradioactive daughter nuclide.
Each step in such a chain is characterized by a distinct half-life.
Radiometric dating, often called radioactive dating, is a technique used to determine the age of materials such as rocks.
It is based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products, using known decay rates.
Shortly after Becquerel's find, Marie Curie, a French chemist, isolated another highly radioactive element, .