Preface.Editorial Staff.How to Use the Dictionary.Scope of Fields.Pronunciation Key.dictionary.Appendix.Euqivalents of commonly used units for the U.S.Customary Sytem and the Metric System.conversion Factors for the U.S.Customary System, Metric System, and International System.Dimensional Formulas of Common Quantities.Internal Energy and Generalized Work.The Fundamental Particles.Defining Fixed Points of the International Practical Temperature Scale of 1990 (ITS-90).Primary Thermometry Methods.Types of Particulate Systems.Density and Speed of Sound in Selected Materials.Recommended Values of Selected Fundamental Physical Constants.Types of Radioactivity.Electromagnetic Spectrum.Physical Properties of Optical Materials.The 14 Bravais Lattices.