"Protons behave like quantum spinning tops with spin ½ in units of Planck's constant \hbar. This spin is responsible f…"

"In dealing with problems about electrons according to quantum mechanics, one finds one does not get agreement with ex…"

"... when one has to deal with very many electrons ... one then requires a ... simpler and rougher method. Such a meth…"

"For a spin-one particle only—because it requires three amplitudes—the correspondence with a vector is very close. In …"

"The investigations of Dirac (1936) on relativistic wave equations for particles with arbitrary spin have recently bee…"

"... Before the year 1928, every physicist knew what we meant by an elementary particle. The electron and the proton w…"

"With the exception of experts on the classification of spectral terms, the physicists found it difficult to understan…"

"... was formalized by a number of authors ... as the requirement that the wave function of a multi-electron system is…"

"What is the empirical content of quantum mechanics? Or how does the wave function assigned to a relate to the results…"

"… what is the wave function? Is it a complete and comprehensive representation of the world? Or do we need additional…"