Remarks on Transition Temperatures

For many, physically very diverse but formally analogous, phenomena it is found experimentally that a transition takes place from an ordered state to a state of disorder at a certain temperature (Cf. the preceding talk by R.H.Fowler (Helv. Phys. Acta .7, Suppl. 2, 72-80, 1934). Typical examples for this are the melting points of solids and the Curie point of ferromagnetism…