InhaltsangabeContents-Part 2.- III The Creation of Wave Mechanics.- III.1 Scientific Exchange with Planck and Einstein.- Interaction with Colleagues in Zurich.- Growing Reputation and the Solvay Conference of 1924.- The Innsbruck Naturforscherversammlung.- Planck's Lecture and Other Interesting Lectures.- Einstein, the Nature of Light and Bose Statistics.- First Correspondence with Einstein.- Planck's Preliminary Response to Einstein.- Schrödinger's Analysis of Entropy Definitions.- Planck's Last Word.- A New Stimulus from Einstein.- The Energy States of the Ideal Gas.- Continued Scientific Exchange with Berlin.- III.2 First Steps Towards the Hydrogen Equation.- Philosophical Interlude: Consciousness and Continuity.- Lecture Course on Spectra.- Obtaining the Thesis of Louis de Broglie.- Phase Waves and Stationary Orbits of Atoms.- New Description of Radiation and Exchange with Landé.- The Zurich Kolloquium.- Memorandum on the Eigenvibrations of the Hydrogen Atom.- Solution of the Relativistic Hydrogen Equation.- The Failure of the Relativistic Hydrogen Equation.- On Einstein's Gas Theory.- Application of the Darwin-Fowler Method.- Phase Waves in Gas Theory.- Relations Between Gas Theory and the Hydrogen Equation.- III.3 The Nonrelativistic Hydrogen Equation.- An Important Correspondence with Wien.- On the Nature of Radiation and a Repetition of the Michelson Experiment.- A Breakthrough During the Christmas Vacation.- The Notebook on 'Eigenwertproblem des Atoms. I' (First Part).- Assistance from Colleagues in Zurich.- Quantization as a Variational Principle.- Discrete and Continuous Eigenvalues of the Nonrelativistic.- Hydrogen Equation.- III.4 Sources of Undulatory Mechanics.- Preliminary Arguments Given in the First Paper.- Louis de Broglie's Mechanical-Optical Analogy.- Hamilton's Optical-Mechanical Analogy.- Relations Between Wave and Geometrical Optics.- A Hertzian Formulation of General Relativity and the Mechanical-Optical Analogy.- III.5 Foundations of Undulatory Mechanics.- First Response from Munich.- Relation to the Old Theory of Ritz?.- Preparations for the Second Communication.- Does the Scheme Presented Exhaust the Undulatory Content?.- The Mechanical Analogue of the Debye-Laue Construction.- Undulatory Mechanics and the Wave Equation.- IV Early Response and Applications.- IV. 1 The Scheme Starts to Work.- The Discovery of 'Hilbert's Mathematics'.- The Oscillator in Wave Mechanics.- Several Degrees of Freedom and Degeneracy.- The Rotator and the Diatomic Molecule in Wave Mechanics.- Undulatory Perturbation Theory.- The Transcription of Epstein's Calculation of the Stark Effect.- Perturbation Theory for Many Degrees of Freedom.- IV.2 Response to Wave Mechanics I. The Early Phase.- Continuation of the Correspondence with Wilhelm Wien and Arnold Sommerfeld.- Letters to and from Berlin.- Some Penetrating Questions by Hendrik Lorentz.- IV.3 Formal Equivalence of Wave Mechanics and the Quantum Mechanics of Born, Heisenberg, Jordan and Dirac.- First Hints of a Relation of Wave Mechanics to Quantum Mechanics.- A Paper by Lanczos on the Field-like Representation of Quantum Mechanics.- Operators and Equivalence of Wave and Matrix Equations.- A Letter by Wolfgang Pauli.- Pauli, Lanczos' Field-like Formulation and the Born-Wiener Approach.- A Combination of Schrödinger's and Lanczos' Theory.- The Solution of the Equations of Quantum Dynamics: Carl Eckart's Equivalence Demonstration.- IV.4 Response to Wave Mechanics II. Applications and Extensions.- The Stuttgart Meeting: Talks by Fues and Wentzel.- Band Spectra in Undulatory Mechanics.- Intensity Calculations of Schrödinger, Pauli, Wentzel and Fues.- European-American Competition on the Stark Effect and the Hydrogen Spectrum.- Collision Processes in Wave Mechanics.- Cracking the Helium Problem.- The Advent of Fermi Statistics.- Symmetry Properties of Wave Functions and Quantum Statistics.- IV.5 Towards an Undulatory Interpretation of Atomic Phenomena.- Early Expressions of Schrodinger's U