The electrical resistance of cadmium, thallium and tin at low temperatures

The “ideal” resistance curve of cadmium and tin (calculated by means of Matthiesen's rule) shows a dependence resp. on about T ^4.5 and T⁴( T= abs. temp.). The “ideal” resistance curve of thallium is not to be represented by one single power of temperature, because of the faint S-form of the curve on logarithmic scale.