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Unformatted text preview: from which the light appears to be coming. [The effect is greatly exaggerated: the maximum devia4on is only 0.00048o.] 11 The 1919 Solar Eclipse h7p://cdn.physorg.com/newman/gfx/news/hires/2009/1 ­celebra4ngg.jpg 12 h7p://blog.modernmechanix.com/mags/PopularScience/5 ­1929/einstein_eclipse.jpg Einstein and Eddington (2008) h7p://www.youtube.com/watch?v=K4xBoVt9 ­po 13 GPS •  The General Theory of Rela4vity may seem to be an exo&c bit of knowledge with li7le prac4cal applica4on. •  In fact, this theory plays an essen4al role in the Global Posi&oning System (GPS), which makes it possible to determine your posi4on on the Earth’s surface to within a few meters using a handheld receiver. 14 h7p://arstechnica.com/apple/2008/07/the ­disrup4ve ­poten4al ­of ­gps ­on ­the ­iphone ­3g/ GPS •  Global Posi&oning System (GPS) is an array of some 30 satellites. •  Each satellite carries an atomic clock,...
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