Re: The Cost of Relativity

From: Dirk Van de moortel (dirkvandemoortel_at_ThankS-NO-SperM.hotmail.com)
Date: 07/13/04 

Date: Tue, 13 Jul 2004 09:11:26 GMT

"Randy" <rhoweaxiak@shaw.ca> wrote in message news:YiNIc.4718$ek5.2303@pd7tw2no...
> Hi
>
> Just a curious lurker. I read Uncle Al's reference:
> http://www.eftaylor.com/pub/projecta.pdf
>
> (on page A-8 it says:)
>
> Note 2: Our analysis assumed the speed Vearth of the Earth clock to be
> that of the speed of the equator. One might expect that this
> speed-dependent correction would take on different values at different
> latitudes north or south of the equator, going to zero at the poles
> where there is no motion of the Earth clock due to rotation of Earth. In
> practice there is no latitude effect because Earth is not spherical; it
> bulges a bit at the equator due to its rotation. The smaller radius at
> the poles increases the M/rEarth term in equation [[12] by the same
> amount that the velocity term decreases. The outcome is that our
> calculation for the equator applies to all latitudes.
>
> (me again)
>
> Is this just a (rather remarkable ?) coincidence or is there a more
> fundamental reason that the Earth's shape would offset the velocity term
> so closely?

Earth has taken a form that gives an equilibrium configuration.
See http://www.mathpages.com/home/kmath182.htm

Dirk Vdm

>
> Also I could not help but wonder why they did not resync the clocks with
> periodic timestamp transmissions from earth rather than worry about
> accumulated time offsets due to relativistic effects? Do you think they
> were worried the timestamps might be jammed in a war situation?
>
> Thanks

Relevant Pages

  • Re: The Cost of Relativity
    ... I read Uncle Al's reference: ... Our analysis assumed the speed Vearth of the Earth clock to be ... that of the speed of the equator. ...
    (sci.physics)
  • Re: The Cost of Relativity
    ... I read Uncle Al's reference: ... Our analysis assumed the speed Vearth of the Earth clock to be ... that of the speed of the equator. ...
    (sci.physics.relativity)
  • Re: The Cost of Relativity
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