Measure isotopes for radiometric dating Fast flirt and sex free live cam roulette
By anyone's standards, 50 billion years is a long time.
Radiometric dating, or radioactive dating as it is sometimes called, is a method used to date rocks and other objects based on the known decay rate of radioactive isotopes.
This provides a built-in cross-check to more accurately determine the age of the sample.
Uranium is not the only isotope that can be used to date rocks; we do see additional methods of radiometric dating based on the decay of different isotopes.
So, you might say that the 'full-life' of a radioactive isotope ends when it has given off all of its radiation and reaches a point of being non-radioactive.
When the isotope is halfway to that point, it has reached its half-life.