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Compass: Difference between revisions
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* [http://geomag.usgs.gov USGS Geomagnetism Program] | * [http://geomag.usgs.gov USGS Geomagnetism Program] | ||
* Science Friday, "''[http://www.sciencefriday.com/pages/2002/May/hour2_053102.html The Riddle of the Compass]''" (interview with Amir Aczel, first broadcast on | * Science Friday, "''[http://www.sciencefriday.com/pages/2002/May/hour2_053102.html The Riddle of the Compass]''" (interview with Amir Aczel, first broadcast on NPR on [[May 31]], [[2002]]). | ||
* Paul J. Gans, [http://scholar.chem.nyu.edu/tekpages/compass.html The Medieval Technology Pages: Compass] | * Paul J. Gans, [http://scholar.chem.nyu.edu/tekpages/compass.html The Medieval Technology Pages: Compass] | ||
* The Tides By Sir William Thomson (Lord Kelvin) | * The Tides By Sir William Thomson (Lord Kelvin) | ||
