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rotary telescope

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  • technology, history of — Introduction       the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …   Universalium

  • List of spacewalks and moonwalks — This list contains all spacewalks and moonwalks where an astronaut has fully, or partially left his spacecraft. All spacewalks have had the astronauts tethered to their spacecraft except for seven spacewalks by the United States, (six in 1984… …   Wikipedia

  • Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …   Universalium

  • Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

  • Inventions in medieval Islam — A significant number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Al Andalus and Africa in the west to the Indian subcontinent and Malay Archipelago in the east.… …   Wikipedia

  • STS-126 — Infobox Space mission mission name = STS 126 insignia = STS 126 insignia.jpg shuttle = Endeavour launch pad = LC 39A launch = November 14, 2008, Approx. 7:55 p.m. EST (0055 UTC Nov. 15) landing = November 29, 2008, Approx. 2:18 p.m. EST (1918… …   Wikipedia

  • Timeline of historic inventions — The timeline of historic inventions is a chronological list of particularly important or significant technological inventions. Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same… …   Wikipedia

  • Nancy J. Currie — Nancy Jane Sherlock Currie NASA Astronaut Nationality American Status Inactive …   Wikipedia

  • Cherry Springs State Park — Coordinates: 41°39′46″N 77°49′23″W / 41.66278°N 77.82306°W / 41.66278; 77.82306 …   Wikipedia

  • Setting circles — on an equatorial fork mounted telescope Setting circles are used on telescopes equipped with an equatorial mount to find astronomical objects in the sky by their equatorial coordinates often used in star charts or ephemeris …   Wikipedia

  • Theodolite — A theodolite (IPA en|θiːˈɒdəlаɪt) is an instrument for measuring both horizontal and vertical angles, as used in triangulation networks. It is a key tool in surveying and engineering work, particularly on inaccessible grounds, but theodolites… …   Wikipedia

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