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  2. Rhombohedron - Wikipedia

    en.wikipedia.org/wiki/Rhombohedron

    Right rhombic prism: with D 2h symmetry, order 8. It is constructed by two rhombi and four squares. This can be seen by stretching a cube on its face-diagonal axis. For example, two right prisms with regular triangular bases attached together makes a 60 degree right rhombic prism. Oblique rhombic prism: with C 2h symmetry, order 4. It has only ...

  3. History of the compass - Wikipedia

    en.wikipedia.org/wiki/History_of_the_compass

    The compass was invented in China during the Han dynasty between the 2nd century BC and 1st century AD where it was called the "south-governor" ( sīnán 司南) or "South Pointing Fish" ( 指南魚 ). [3] The magnetic compass was not, at first, used for navigation, but for geomancy and fortune-telling by the Chinese.

  4. List of American military installations - Wikipedia

    en.wikipedia.org/wiki/List_of_American_military...

    Joint Base Myer-Henderson Hall – located 1 kilometer (1 mile) northwest of Arlington County, Virginia. Joint Expeditionary Base–Little Creek – located 20 kilometers (13 miles) northwest of Virginia Beach. Joint Base Lewis-McChord – located 17 kilometers (11 miles) southwest of Tacoma, Washington. Joint Base Anacostia-Bolling – located ...

  5. List of military installations in Michigan - Wikipedia

    en.wikipedia.org/wiki/List_of_military...

    Air Force Bases and Naval Air Stations Wurtsmith Air Force Base was used to train Free French pilots in WWII and to house nuclear-armed B-52 bombers during the Cold War. See also Michigan World War II Army Airfields. Michigan's northern location made it a good site for several Cold War air bases, especially Strategic Air Command B-52 / KC-135 ...

  6. Armageddon (Prism album) - Wikipedia

    en.wikipedia.org/wiki/Armageddon_(Prism_album)

    Armageddon is the third studio album by Canadian rock band Prism, released in June 1979 by Capitol Records. It achieved double platinum status in Canada (in excess of 200,000 units sold). [2] Armageddon is notable for several reasons. Bruce Fairbairn received the Canadian music industry 1980 Juno Award for Producer of the Year for the album.

  7. List of United States military bases in Illinois - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    Fort Sheridan, Highwood, Illinois (closed 1993) Fort Arlington, Arlington Heights, Illinois. Green River Ordnance Plant. Haley Army Airfield. Joliet Army Ammunition Plant, Joliet, Illinois. Rock Island Arsenal, Rock Island, Illinois. Savanna Army Depot, Savanna, Illinois (Closed circa 2000)

  8. Al Dhafra Air Base - Wikipedia

    en.wikipedia.org/wiki/Al_Dhafra_Air_Base

    Al Dhafra Air Base. /  24.24000°N 54.54833°E  / 24.24000; 54.54833. Al Dhafra Air Base ( Arabic: قاعدة الظفرة الجوية) ( IATA: DHF, ICAO: OMAM) is a military installation in the United Arab Emirates. The base is located approximately 20 mi (32 km) south of Abu Dhabi, and is operated by the United Arab Emirates Air Force .

  9. Hexadecimal - Wikipedia

    en.wikipedia.org/wiki/Hexadecimal

    v. t. e. In mathematics and computing, the hexadecimal (also base-16 or simply hex) numeral system is a positional numeral system that represents numbers using a radix (base) of sixteen. Unlike the decimal system representing numbers using ten symbols, hexadecimal uses sixteen distinct symbols, most often the symbols "0"–"9" to represent ...