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  • ...er XXV The Magnetic Compass (continued) the analysis and correction of the deviation, His Majesty's Stationary Office, London, 1914. ...http://www.uib.no/jais/v001ht/schmidl1.htm Two Early Arabic Sources on the Magnetic Compass]''
    2 KB (333 words) - 20:07, 17 January 2010
  • ...er free to align itself accurately with [[Earth's magnetic field|Earth]]'s magnetic field, which is of great assistance in [[navigation]]. The [[cardinal point ...ass'' is a magnetic device using a needle to indicate the direction of the magnetic north of a planet's [[magnetosphere]]. Any [[Measuring instrument|instrumen
    27 KB (4,045 words) - 08:13, 19 August 2021