SEARCH Articles Figures Tables Advanced ab initio Methods, Density Functional Theory and Solid-state Quantum Mechanics Classical and Quantum Mechanics in the Theory of Charged-Particle Stopping Group theory and quantum mechanics Introduction The Merger of Classical Mechanics and Probability Theory Mechanical theory Mechanics Theory Mechanics and Fracture Toughness Theories Mechanics and the Old Quantum Theory Mechanism and Theory in Organic Mechanism and Theory in Organic Chemistry Mechanism theory Quantum Mechanics and Atomic Theory Relativity theory, quantum mechanics and spin Statistical, Continuum Mechanical, and Rate Process Theories of Fracture The Future Role of Quantum Mechanics Theory and Experiment Working Together Theory and Mechanisms of Filler Reinforcement in Natural Rubber Theory and Mechanisms of Reinforcement Theory and mechanics of reinforcement Transition state theory and statistical mechanics Valency and oxidation numbers a historical sketch of bonding theory prior to quantum mechanics