Newly Discovered Superconductors

Abstract

AT the Glasgow meeting in September last of the British Association, I read a paper on investigations on superconductors which I am carrying out in the cryogenic laboratory, Leyden, in co-operation with Prof, van Aubel, of Ghent, and Mr. J. Voogd, of Leyden. In my opinion, the superconductivity of the metals is not only connected with the electron configuration in the atoms, but also with the atomic weight and perhaps with the zero-point energy (vide W. J. de Haas, Journal de Physique, 9, 9; 1928). From this point of view the following investigations may be interesting.