THE ATOM AND THE BOHR THEORY OF ITS STRUCTURE

HELGE HOLST

At the close of the nineteenth century and the beginning of the twentieth, our knowledge of the activities in the interior of matter experienced a development which surpassed the boldest hopes that could have been entertained by the chemists and physicists of the nineteenth century. The smallest particles of chemistry, the atoms of the elements, which hitherto had been approached merely by inductive thought, now became tangible realities, so to speak, which could be counted and whose tracks could be photographed. A series of remarkable experimental investigations, stimulated largely by the English physicist, J. J. Thomson, had disclosed the existence of negatively charged particles, the so-called electrons, ?/???? the mass of the smallest atom of the known elements.

Table of contents

• PREFACE
• FOREWORD
• CHAPTER I ATOMS AND MOLECULES
• CHAPTER II LIGHT WAVES AND THE SPECTRUM
• CHAPTER III IONS AND ELECTRONS
• CHAPTER IV THE NUCLEAR ATOM
• CHAPTER V THE BOHR THEORY OF THE HYDROGEN SPECTRUM
• CHAPTER VI VARIOUS APPLICATIONS OF THE BOHR THEORY
• CHAPTER VII THE STRUCTURE OF THE ATOM AND THE CHEMICAL PROPERTIES OF THE ELEMENTS