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Re: Einsteinian Simultaneity and syncronism : no thanks !

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  Re: Einsteinian Simultaneity and syncronism : no thanks ! bear making dust <bear@bearmakingdust.net> - 2016-03-21 22:18 +0000

#564283 — Re: Einsteinian Simultaneity and syncronism : no thanks !

Tom Roberts wrote:

> On 3/21/16 3/21/16 - 4:06 PM, Snowshoe wrote:
>> Let's say I am riding a GPS satellite with a frequency counter and a
>> radio. The GPS is transmitting at 10.2299999954326 MHz and this is
>> received on the ground at 10.23 MHz.
> 
> Not really. There is the Doppler effect that makes the ground receiver
> receive slightly higher than 10.23 MHz when the satellite is
> approaching,
> and slightly lower than 10.23 MHz when it is receding. The long-term
> average, however, is 10.2300000000000 MHz., We KNOW this because GPS
> time remains within a few ns of UTC modulo leap seconds.

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