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Monitoring radioactive decay


A counter is recording the arrival of radiation emitted from a sample at random intervals of time and at a particular average count rate.

See how the probability distribution P(r) of recording different numbers of counts r in an interval of 1 second, builds up as we continue to count events.

Overlay the Poisson distribution (Show Poisson) to see how the observations approach the expected form as N increases to a large number.


The University of Liverpool
1999, 2000 The University of Liverpool, Department of Physics

EPSRCProject funded by The Engineering and Physical Sciences Research Council

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