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Journal of Applied Mathematics and Decision Sciences
Volume 1 (1997), Issue 1, Pages 67-71

Classroom note: Radioactivity half-lives considered as data

School of Behavioural Sciences, Macquarie University, Sydney 2109, N.S.W., Australia

Copyright © 1997 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Half-lives of radioactive nuclides range over more than 20 orders of magnitude. It is striking that, nevertheless, statistical laws may be discovered in these numbers: a log-normal distribution provides a good description.