The Theory of Spectra and Atomic Constitution

Niels Bohr (1885-1962) was a Danish physicist who played a key role in the development of atomic theory and quantum mechanics, he was awarded the Nobel Prize for Physics in 1922. First published in 1924, this second edition of a 1922 original contains three essays by Bohr dealing with the application of quantum theory to problems of atomic structure: the first essay is on the spectrum of hydrogen; the second is on the series spectra of the elements; the third is on the structure of the atom and the physical and chemical properties of the elements. The essays do not aim at a comprehensive treatment of their subjects, instead providing the reader with a more accessible, generalised viewpoint. This book will be of value to anyone with an interest in Bohr's contribution to physics.

On the Spectrum of Hydrogen
Empirical spectral laws
Laws of temperature radiation
The nuclear theory of the atom
Quantum theory of spectra
Hydrogen spectrum
The Pickering lines
Other spectra
On the Series Spectra of the Elements
Introduction
General Principles of the Quantum Theory of Spectra
Hydrogen spectrum
The correspondence principle
General spectral laws
Absorption and excitation of radiation
Development of the Quantum Theory of Spectra
Effect of external forces on the hydrogen spectrum
The Stark effect
The Zoeman effect
Central pertubations
Relativity effect of hydrogen lines
Theory of series spectra
Correspondence principle and conservation of angular momentum
The spectra of helium and lithium
Complex structure of series lines
Conclusion
The Structure of the Atom and the Physical and Chemical Properties of the Elements
Preliminary
The nuclear atom
The postulates of the quantum theory
Hydrogen atom
Hydrogen spectrum and x-ray spectra
The fine structure of the hydrogen lines
Periodic table
Recent atomic models
Series Spectra and the Capture of Electrons by Atoms
Arc and spark spectra
Series diagram
Correspondence principle
Formation of Atoms and the Periodic Table
First period. Hydrogen-helium
Second period. Lithium-neon
Third period. Sodium-argon
Fourth period. Potassium-Krypton
Fifth period. Rubidium-xenon
Sixth period. Caesium-niton
Seventh period
Survey of the periodic table
Reorganization of Atoms and X-Ray SPectra
Absorption and emission of x-rays and correspondence principle
X-ray spectra and atomic structure
Classification of x-ray spectra
Conclusion
Appendix
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The Theory of Spectra and Atomic Constitution

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