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Talk:Theory of relativity (view source)
Revision as of 20:28, August 2, 2007
, 20:28, August 2, 2007→Question about GPS: proposed language
* Being able to calculate the relativistic corrections is not truly essential to making GPS work. Nowadays the satellite clocks are synchronized so frequently that predicting the clock drift is not necessary. If relativity were never discovered, then the satellite corrections could be made without anyone realizing that the system was just adding relativistic corrections. [[User:RSchlafly|RSchlafly]] 16:02, 2 August 2007 (EDT)
* Being able to calculate the relativistic corrections is not truly essential to making GPS work. Nowadays the satellite clocks are synchronized so frequently that predicting the clock drift is not necessary. If relativity were never discovered, then the satellite corrections could be made without anyone realizing that the system was just adding relativistic corrections. [[User:RSchlafly|RSchlafly]] 16:02, 2 August 2007 (EDT)
::RSchlafly, although I disagree with your decision to remove some of the discussion here, I agree with your position. My only issue is that your second bullet still leaves open the question of why the clocks drift, or why they need to be synchronized often, and implies that we don't have a good explanation. However, we do have a pretty good explanation--relativity can predict such discrepancy to high precision. If GPS is mentioned in the article, I would prefer that we insert language similar to "Clocks on board GPS satellites require adjustments to their clock frequencies if they are to be synchronized with those on the surface of the Earth. Currently, relativity provides the best explanation for such adjustments (insert refs)" Does that sound any better? I'm open other suggestions.--[[User:Bayes|Bayes]] 16:28, 2 August 2007 (EDT)