radio source catalogs

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• radio and radar astronomy — Study of celestial bodies by measuring the energy they emit or reflect at radio wavelengths. It began in 1931 with Karl Jansky s discovery of radio waves from an extraterrestrial source. After 1945, huge dish antennas, improved receivers and data …   Universalium

• Lafayette Radio — was a radio manufacturer and retailer based in Syosset, New York. The company sold radio sets, amateur radio equipment, citizen s band (CB) radios, and other communications equipment, as well as electronic components and even tools, through… …   Wikipedia

• Timeline of astronomical maps, catalogs, and surveys — Timeline of astronomical maps, catalogs and surveys* ca. 1800 BC Babylonian star catalog * ca. 350 BC Shi Shen s star catalog has almost 800 entries * ca. 300 BC star catalog of Timocharis of Alexandria * ca. 134 BC Hipparchus makes a detailed… …   Wikipedia

• Ryle, Sir Martin — born Sept. 27, 1918, Brighton, Sussex, Eng. died Oct. 14, 1984, Cambridge, Cambridgeshire British radio astronomer. After receiving a Ph.D. in physics from the University of Oxford, he helped design radar equipment during World War II. He was an… …   Universalium

• telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …   Universalium

• nebula — nebular, adj. /neb yeuh leuh/, n., pl. nebulae / lee , luy /, nebulas. 1. Astron. a. Also called diffuse nebula. a cloud of interstellar gas and dust. Cf. dark nebula, emission nebula, reflection nebula …   Universalium

• List of astronomy acronyms — This is a compilation of acronyms commonly used in astronomy. Most of the acronyms are drawn from professional astronomy and are used quite frequently in scientific publications. However, a few of these acronyms are frequently used by the general …   Wikipedia

• Film preservation — Stacked containers filled with reels of film stock. The film preservation, or film restoration, movement is an ongoing project among film historians, archivists, museums, cinematheques, and non profit organizations to rescue decaying film stock… …   Wikipedia

• NGC 1055 — An ultraviolet image of NGC 1055 taken with GALEX. Observation data (J2000 epoch) Constellation …   Wikipedia

• publishing, history of — Introduction       an account of the selection, preparation, and marketing of printed matter from its origins in ancient times to the present. The activity has grown from small beginnings into a vast and complex industry responsible for the… …   Universalium

• Business and Industry Review — ▪ 1999 Introduction Overview        Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …   Universalium