This new, fourth, edition of Allen's classic Astrophysical Quantities belongs on every astronomer's bookshelf. It has been thoroughly revised and brought up to date by a team of more than ninety internationally renowned astronomers and astrophysicists. While it follows the basic format of the original, this indispensable reference has grown to more than twice the size of the earlier editions to accommodate the great strides made in astronomy and astrophysics. It includes detailed tables of the most recent data on: - General constants and units - Atoms, molecules, and spectra - Observational astronomy at all wavelengths from radio to gamma-rays, and neutrinos - Planetary astronomy: Earth, planets and satellites, and solar system small bodies - The Sun, normal stars, and stars with special characteristics - Stellar populations - Cataclysmic and symbiotic variables, supernovae - Theoretical stellar evolution - Circumstellar and interstellar material - Star clusters, galaxies, quasars, and active galactic nuclei - Clusters and groups of galaxies - Cosmology. As well as much explanatory material and extensive and up-to-date bibliographies.

This comprehensive bibliography lists some 500 source texts published in the British Isles or abroad from 1479 to 1660 and more than 2,000 works of secondary literature from 1900 to the present.

The book reviews developments in the following fields: electromagnetic compatibility; EMC standards; EMC testing; radiated emission testing; antennas; radiated susceptibility testing; measurement equipment; electromagnetic transient testing; and uncertainty analysis

Includes subject area sections that describe all pertinent census data products available, i.e. "Business--trade and services", "Geography", "Transportation," etc.

The world's most comprehensive, well documented, and well illustrated book on this subject, with 445 photographs and illustrations. Plus an extensive index.