The Discovery of Quantum Mechanics 1925

I. Werner Heisenberg's Scientific Development.- I.1 Early Influences.- I.2 Escape from Mathematics and the Encounter with Sommerfeld.- I.3 Sommerfeld's Seminar.- I.4 Sommerfeld's Mathematical Approach.- I.5 Lectures and Courses.- I.6 Introduction to Research in Quantum Theory.- I.7 Success in a Problem of Classical Physics.- I.8 Life in Munich and a Near Failure in the Doctoral Examination.- II. Towards the Recognition of the Crisis.- II.1 A New Environment.- II.2 Born's Seminar and the Pursuit of New Subjects.- II.3 Concern with the Helium Problem.- II.4 Half-Integral Quantum Numbers and the Difficulties of Atomic Theory.- II.5 Return to the Anomalous Zeeman Effects.- III. The Penultimate Sharpening of the Correspondence Principle.- III.1 Getting to Know Niels Bohr.- III.2 Spring Visit to Copenhagen.- III.3 In the Footsteps of Niels Bohr.- III.4 Ad Majorem Correspondentiae Principii Gloriam.- III.5 The Kramers-Heisenberg Dispersion Theory.- III.6 Atomic Models and Complex Spectra.- IV. Sunrise in Helgoland.- IV.1 Return to Gottingen and the Hydrogen Problem.- IV.2 The Quantum-Theoretical Fourier Series and an Unexpected Difficulty.- IV.3 The Anharmonic Oscillator and a Letter to Kronig.- IV.4 The Determination of the Constants and a Severe Attack of Hay Fever.- IV.5 Energy Conservation and Stationary States.- V. The Discovery of Quantum Mechanics.- V.1 Pauli's Attitude Towards Attempts to Formulate a Quantum Mechanics.- V.2 A Guiding Philosophical Principle.- V.3 Quantum-Theoretical Kinematics and Mechanics.- V.4 Preliminary Tests and Applications of Quantum Mechanics.- V.5 A Farewell to 'Term Zoology and Zeeman Botany'.- References.- Author Index.