Changes

Jump to navigation Jump to search
Line 343: Line 343:     
::::: Now you're pointing me to a new paper.  I'll look at it in the morning but, as I said, pick your best one.  If this paper strikes out also then I'm unlikely to keep looking at more and more papers to explain why each one fails to support the claim.  Please provide your very best cite, as I requested before.  Thanks and Godspeed.--[[User:Aschlafly|Aschlafly]] 01:07, 27 July 2007 (EDT)
 
::::: Now you're pointing me to a new paper.  I'll look at it in the morning but, as I said, pick your best one.  If this paper strikes out also then I'm unlikely to keep looking at more and more papers to explain why each one fails to support the claim.  Please provide your very best cite, as I requested before.  Thanks and Godspeed.--[[User:Aschlafly|Aschlafly]] 01:07, 27 July 2007 (EDT)
 +
 +
::::How about [http://www.ipgp.jussieu.fr/~tarantola/Files/Professional/GPS/Neil_Ashby_Relativity_GPS.pdf this one], written by [http://www.colorado.edu/physics/Web/directory/faculty/ashby_n.html Neil Ashby] for [http://www.physicstoday.org/ Physics Today], a major publication of the AIP.  Again, I quote from a portion, although the entire paper is about the issue in question:
 +
 +
:::::"[B]efore the first GPS satellite was launched in 1977, although it was recognized that orbiting clocks would require such a relativistic offset, there was uncertainty as to its magnitude, and even its sign. So correcting frequency synthesizers were built into the clocks, spanning a large enough range around the nominal 10.23 MHz clock frequency to encompass all possibilities. After the satellite's cesium atomic clock was turned on, it was operated for three weeks to measure its rate. The frequency shift measured during this initial period was found to be 4.425 parts per ten billion, agreeing with the relativistic calculation to better than 1%."
 +
 +
::::You've now been presented with many sources from Rutm and I supporting GR implementation in GPS, and you have yet to produce one source that says that GPS works on only classical principles.  Furthermore, I question your motivation in demanding one "best" source, since I anticipate that you will attempt to attack the "best source," perhaps by invoking "liberal bias" (as if it existed in this case--either the clocks run at different frequencies or they don't), ignoring the vast consensus, and proclaim "victory."--[[User:Bayes|Bayes]] 10:56, 27 July 2007 (EDT)
    
== Theory of Relativity (moved from [[User talk:Aschlafly]]) ==
 
== Theory of Relativity (moved from [[User talk:Aschlafly]]) ==
147

edits

Navigation menu