This book consists of material in the first chapter of A Physicist's Desk Reference, updated and supplemented by additional new data. It's a self-contained, quick reference guide to the most commonly used mathematical formulas, tables of data, symbols, units, standard nomenclature, and fundamental constants in physics. A useful bibliography to more complete sources of data is also included.Partial Contents: 1. Physical Quantities, Symbols, and Units. Physical Quantities. Symbols and Nomenclature. Systems of Units. 2. The International System of Units. Base Units. Realization of the Meter. Non-SI Systems of Units. 3. Precise Physical Constants. Standards and Conversion Factors. Unit Systems. Physical Constants. 4. Mathematical Formulas. Algebraic Equations. Progression and Series. Logarithmic Functions. Gamma Functions. Vector Algebra. 5. Probability and Statistics. Probability Distributions. Convolution of Distributions. Statistics. 6. Physics Formulary. Mechanics. Wave Propagation. Electricity and Magnetism. 7. Practical Physics. Friction. Engineering Physics. Electromagnetic Frequency Bands. 8. Properties of Materials. The Elements. Densities. Viscosity. Surface Tension. Solubility. Vapor Pressure. Nuclear Physics. 9. Recommended Symbols for Physical Quantities.