Questions of Light and Space (Introduction)
by George Jelliss 
, Crewe, Saturday, October 09, 2010, 17:34 (5159 days ago) @ Balance_Maintained
Your error here is in assuming that the geometry of the universe is Euclidean. For surveying purposes on limited areas on Earth Euclidean geometry is an adequate approximation. Out in space the Geometry of Einsteinian General Relativity applies. In this the "straight lines" of Euclid do not exist. The paths taken by light rays depend on the distribution of masses in space locally. The "bending" of light round the sun is well known. -Here is the wikipedia article on use of relativity in the global positioning system: http://en.wikipedia.org/wiki/Global_Positioning_System#Relativity
--
GPJ
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2010-10-12, 05:22
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2010-10-13, 05:41
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2011-09-23, 05:59
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2011-09-24, 17:19
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2011-09-26, 23:05
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2011-09-24, 17:19
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2010-10-12, 11:54
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2010-10-09, 14:45