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Illustration Radioactive decay law (N-t graph)

Radioactive decay law - Graph
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Decay law represents the number \(N\) of atomic nuclei not yet decayed at the time \(t\). At the beginning, i.e. at the time \(t=0\) there were \(N_0\) of not yet decayed nuclei (initial number). With the time this number decreases exponentially.