This PhysicsCentral article, by Clifford Will of Washington University, discusses the importance of relativity for GPS. Both special and general relativity affect the accuracy of GPS, and without correcting for relativistic effects GPS wouldn't work. Will describes how the GPS system works, how the relativistic effects enter, and how the corrections are made. The article is for a general audience.
American Physical Society. Einstein's Relativity and Everyday Life. College Park: American Physical Society, August 29, 2011. http://www.physicscentral.com/explore/writers/will.cfm (accessed 20 October 2014).
%0 Electronic Source %D August 29, 2011 %T Einstein's Relativity and Everyday Life %I American Physical Society %V 2014 %N 20 October 2014 %8 August 29, 2011 %9 text/html %U http://www.physicscentral.com/explore/writers/will.cfm
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