Measurements of Decay for Chlorine Isotope 36Cl (IMAGE)
Caption
Between 2009 and 2013, scientists of the Physikalisch-Technische Bundesanstalt and of Ohio State University measured -- with a time delay -- the standardized activity, i.e. the radioactive decay, of 36chlorine. Whereas the American measurement results vary periodically, this is not the case with the PTB values. The blue curve illustrates the distance between the Earth and the Sun (presented as the reciprocal square of the distance in the astronomic unit AE).
Credit
PTB
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