Half life dating calculator

Stable ones don't change, but the unstable undergo radioactive decay, emitting alpha particles, beta particles or gamma rays. Half life is defined as the time required for half of unstable nuclei to undergo this decay. For example, carbon-10 has a half life of only 19 seconds, making it impossible for this isotope to be encountered in nature.Uranium-233, on the other hand, has the half life as high as 160 000 years.

It takes a certain amount of time for half the atoms in a sample to decay.Scientists look at half-life decay rates of radioactive isotopes to estimate when a particular atom might decay.A useful application of half-lives is radioactive dating.This period of time is called the half-life of the reaction, written as .If two reactions have the same order, the faster reaction will have a shorter half-life, and the slower reaction will have a longer half-life.The half-life of a nuclide is a measure of how long it will take for half of the atoms in the sample to undergo radioactive decay.


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