为什么科学家关心它
Half-life is part of the shared Mendeleev scientific core. This page is intentionally conservative until more native-language terminology is verified.
一个具体例子
A half-life does not mean every nucleus survives exactly that long; it is a statistical property of a population.
值得注意
当一个定义与可测量或可观察的现象连接起来时，科学才真正容易记住。