The New Quantum Mechanics [Paperback]

A 1928 overview of quantum mechanics, covering the theories of Heisenberg, de Broglie, Bose, Einstein, Fermi, Dirac and Schroedinger.Published in 1928, this books aim was to give a complete overview of the development of quantum mechanics at the end of the second decade of the twentieth century, discussing the theories of Heisenberg, de Broglie, Bose, Einstein, Fermi, Dirac and Schroedinger.Published in 1928, this books aim was to give a complete overview of the development of quantum mechanics at the end of the second decade of the twentieth century, discussing the theories of Heisenberg, de Broglie, Bose, Einstein, Fermi, Dirac and Schroedinger.George Birtwistle (18771929) published The New Quantum Mechanics in 1928. His stated aim was to give a detailed account of work which had brought the relatively new subject of quantum mechanics to the fore in the previous few years. The earlier chapters give a restatement of Alfred Land?'s theory of multiplets which reconciles it with the new mechanics which follow. Later chapters present the matrix theory of Heisenberg, the q-number theory of Dirac and the wave mechanics of Schroedinger, and synthesise new theories, statistics and controversies in the work of de Broglie, Bose, Einstein, Fermi and Dirac. The book gives a complete overview of the state of quantum mechanics at the end of the second decade of the twentieth century, making it a valuable benchmark for historians of science and mathematicians alike.1. The origin and development of the new quantum mechanics; 2. The multiplets of series spectra and the l-s-j scheme of Land?; 3. The normal and anomalous Zeeman effect; 4. Atomic magnetism; 5. Interpretation of the g-formula; 6. X-ray spectra and their multiplet theory on the new mechanics; 7. The PaschenBack effect and the Sommerfeld formula; 8. The new quantum kinematics of Heisenberg; 9. The theory of Dirac; 10. The harmonic oscillator; 11. The canonical transformation; 12. The anharmonic oscillator; 13. Angulal£$