Publisher Information: 1932.
Pauli, Wolfgang (1900-1958). Diracs Wellengleichung des Elektrons und geometrische Optik. Offprint from Helvetica physica acta 5 (1932). 179-199pp. 231 x 158 mm. Without wrappers as issued. Light dust-soiling but very good to fine.
First Edition, Offprint Issue. “In spring 1932 the Dirac equation [of the electron] was very much on Pauli’s mind. One aspect he analyzed was the limit of short wavelengths, which is the analogue of the geometrical orbits of light rays and describes the limit of classical orbits. In this limit he could confirm Bohr’s claim that the effect of the electron spin is of the same order of magnitude as that of diffraction, and that therefore spin is essentially non-classical. This paper, in which he also discussed the states of negative energy, was the first Pauli published in the new Swiss journal Helvetica Physica Acta” (Enz, No Time to be Brief: A Scientific Biography of Wolfgang Pauli, p. 253).Book Id: 50942