Home > Term: half-life
half-life
The amount of time for half of the atoms of a radioactive element in a sample to decay, or fission. The reduction in the number of atoms follows a geometric scale--at the end of 2 half-lives, there are 1/4 of the atoms left; at the end of 3 half-lives, there are 1/8 remaining; etc.
- ส่วนหนึ่งของคำพูด: noun
- อุตสาหกรรม/ขอบเขต: Anthropology
- Category: Physical anthropology
- Company: Palomar College
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