Half-life is the AVERAGE time taken for the activity of a sample of radioactive nuclide to halve.
This comic depicts half the candidates in the examination hall getting “killed” after every 30 minutes, corresponding to a half-life of 30 minutes. Haha.
* Do realize that for actual radioactive decay, a large number of nuclei must be present for half-life to be relevant. Also, radioactivity is random in nature so not exactly half will always decay in exactly one half-life.
xmComic 