Half Life

The amount of time it takes for half an initial amount to disintegrate. Longer half lives typically correspond to lower radioactivity. Tritium, the heaviest isotope of hydrogen, decays with a relatively short half life of 12.3 years.


t½ = half life
λe = Decay rate

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Actinium 686538720 sClip
Lawrencium 8 sClip
Tritium 387892800 sClip
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See also: Decay Rate, Decay Time.

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Subjects: Physics