The general theory of quantum mechanics is now almost complete, the imperfections that
still remain being in connection with the exact fitting in of the theory with relativity ideas …

Nearly all of this book is taken from an article prepared for a volume of the Encyclopedia of
Physics. This article, in turn, is partly based on Dr. Norbert Rosenzweig's translation of an …

Previous reviews with the same or similar advertisement have concerned themselves with
the theory of the electronic structure of molecules. No mention has been made, however, of …

The new quantum mechanics, when applied to the problem of the structure of the atom with
point-charge electrons, does not give results in agreement with experiment. The …

Although the classical electrodynamic theory meets with a considerable amount of success
in the description of many atomic phenomena, it fails completely on certain fundamental …

The essential contribution of Heisenberg to the theory of ferromagnetism was in showing
that those effects which had been correlated by means of the formal molecular field …

The new mechanics of the atom introduced by Heisenberg may be based on the assumption
that the variables that describe a dynamical system do not obey the commutative law of …

It is customary to express the empirical data concerning term values in the X-ray region by
introducing an effective nuclear charge Zeff. e in the place of the true nuclear charge Z e in …

The relativity quantum theory of an electron moving in a given electromagnetic field,
although successful in predicting the spin properties of the electron, yet involves one serious …

One of the outstanding differences between classical theory and quantum mechanics is the
importance which the latter attaches to the identity of particles. Although perfectly well …