From: Charles Hixson (charleshixsn@earthlink.net)
Date: Fri Aug 23 2002 - 10:12:15 MDT
scerir wrote:
>I remember that Herbert Dingle (Nature, vol 179, p. 866,
>p. 1242, year 1957) wrote something like this ...
>
>1. The postulate of relativity says that if 2 clocks separate,
> and then meet again, there is no physical phenomenon
> which can show you, in absolute terms, that one clock
> moved and the other did not, or viceversa.
>...
>
>
Lets set up those clocks a bit differently than usual. Lets set one of
them in motion such that on inertia it will eventually complete a
circuit of the universe (i.e., I'm assuming that there does exist a
closed path that orbits the universe), and such that at some point along
it's tragectory it will come sufficiently close to the other clock,
which is balanced at an essentially stable point (say at a stable
Lagrange point around a galaxy at the edge of a small stable cluster).
As they pass the first time, synchronize the clocks. When they pass the
second time, will the times be different? Explain.
I've never been able to figure this one out. Perhaps it merely shows
that there are no closed paths through space?
-- -- Charles Hixson Gnu software that is free, The best is yet to be.
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