'HE application of the microwave technique to spectroscopy has greatly increased the
accuracy of spectroscopic measurements. Recent experiments on the spectrum of hydrogen …

in which the author contrasts the experimental observations with various theories and
models. A reviewer's duty is, however, to look both for the good and the less good side of the …

It is hoped that this volume may be of some interest both to the physicist and to the reader of
somewhat less technical training. It has been thought desirable for the sake of both classes …

The electron is a remarkably sim ple particle of matter. It has mass and an electric charge; it
spins (or seems to spin) with a fixed amount of angular momentum, and it has a mag netic …

Prompt publication of brief reports ofimportant discoveries in physics may be secured by
addressing them to this department. Closing dates for this depart ment are, for the first issue …

In the theory of the electromagnetic field without charges, the potentials are not fixed by the
field, but are subject to gauge transformations. The theory thus involves more dynamical …

Professor of Physics. Cornell University." l'Ht~ last three years have witnessed the
performance of several physical experiments which bid fair to rival the most famous …

BRIEF HISTORY AND RECENT DEVELOPMENTS IN ELECTRON THEORY AND
QUANTUMELECTRODYNAMICS 1. HISTORY OF THE ELECTRON Page 1 BRIEF …

394660 vi PREFACE state of the subject up to the time of printing. The most serious
exception is in the part dealing with the electron theory of metallic conduction, where the …

The Rationale for the Present Book Perhaps the most critical problem facing present-day
particle physicistsis to delineate the relationship between classical and quantum systems …