PART I. INTRODUCTORY § 1. GENERAL REMARKS The non-electrical bond between
atoms, such as may be supposed to exist in the Hydrogen molecule, is an important factor in …

The most fascinating of all magnetic bodies is to my mind oxygen. Here we have one of the
simplest of atoms; its atom contains only eight electrons, it is a gas, and therefore in the …

Hund'and Mulliken2in recent papers have considered the structure of polyatomic molecules,
treating each electron as if it moved in a wave function which was a solution of a problem of …

THE evidence brought forward by the speakers who have preceded me has shown that
many magnetic phenomena find a satisfactory explanation on the hypothesis that matter …

Existing attempts to apply the quantum theory to the electromagnetic field are open to
serious objections. Above all, the time is treated differently from the space co-ordinates; the …

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 …

An electrometer of convenient sensibility is enough to show that, when the magnetic field
generates the magnetic rays, the deviation of the electrometer is much greater than before …

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 …

The publication of these lectures, which I delivered in Columbia University in the spring of
1906, has been unduly delayed, chiefly on account of my wish to give some further …

It is also shown that in complex ions the orbital m. agne'tic moments of electrons are
extinguished through the interaction with surrounding atoms, so that the magnetic moment is …