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Radioactive decay

This animation represents the decay of a radioactive source. Radioactive nuclei are represented by blue discs and decayed nuclei by yellow discs. The radioactive particles emitted at each decay are shown by the small white discs.
The rate at which the discs 'decay' decreases since the rate of decay of a source is proportional to the number of radioactive nuclei the Initially there are 225 'radioactive' nuclei.

Please press f5 to re-run the animation.
© Keith Gibbs/John Bourne 2016