The Establishment of the Absolute Scale of Temperature below 1  k.

Abstract

Experiments are discussed establishing the relation of the absolute thermodynamic scale of temperature below 1° k. to the magnetic scale obtained by the extrapolation of Curie's law. The experimental results on iron ammonium alum, manganous ammonium sulphate, and chrome potassium alum are compared with the theoretical calculations of Onsager and Van Vleck.