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Max Born (1882-1970) was a physicist and mathematician who won the 1954 Nobel Prize in Physics for his research in the area of quantum mechanics. Originally published in 1943, this book presents a slightly expanded version of an address Born gave to the Durham Philosophical Society and the Pure Science Society, King's College, at Newcastle-upon-Tyne on 21st May 1943. The text provides an examination of the mutual relationship between theory and experiment in the development of physics. This book will be of value to anyone with an interest in the works of Born, physics and the history of science.

The & Nobel Laureate discusses the foundations of quantum theory in two lectures, & one on the structure of the atom, the other on the lattice theory of rigid bodies.

Excerpt from The Constitution of Matter Modern Atomic and Electron Theories It would also be out of place, since A. Sommerfeld has recently published a book, "Atomic Structure and Spectral Lines," translated by H. L. Brose (Methuen Co. & Ltd.), which deals comprehensively, yet simply, with the recent advances in the physical atomic theory. These essays are for those who have not time to. study the larger work of Sommerfeld. M. Born Frankfurt A.M., 20th April, 1920 Preface To The Second Edition The form of these essays precludes any extensive alterations. I have therefore had to confine myself to incorporating the most important of the recent advances, particularly Aston's work on isotopy in ordinary elements, Franck's spectroscopic determination of the electron-affinities of halogen atoms, and Knipping's measurements of the ionisation-energies of the hydrogen halides. For the rest I have only made minor alterations and additions to the references. Dr. R. Minkowski has kindly assisted me in reading the proofs. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.