Re: Einstein's Train Gedanken Re-visited



<kenseto@xxxxxxxxxx> wrote in message news:c1a9d6e8-0ce6-420b-b382-3ca328b22167@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Jun 24, 7:22 pm, "Whoever" <no...@xxxxxxxxxxx> wrote:
<kens...@xxxxxxxxxx> wrote in message

news:c5332fb8-eaac-432f-9e05-503e189098e5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

> On Jun 23, 11:36 pm, Bruce Richmond <bsr3...@xxxxxxxxxxx> wrote:
[snip]
>> I thought the whole purpose of this exercise was to get clocks in sync
>> without using light signals so that a real world experiment could be
>> done to measure one way light speed isotropy.

> Yes if you move two side by side synched clocks symmetrically in the
> opposite directions at the same velocity and stop them
> simultaneously....these two clocks will remain synchronized according
> to SR. These two clocks can be used to measure the OWLS directly.

If you have an inertial frame relative to which you can move them that way

No....you don't have to have an inertial frame.

If you want them to stay in sync you do. If not, then SR says your measurements will not be correct because the clocks will be out of sync. ( Refer to H-K experiment ) So any difference in OWLS would not be meaningful (unless you adjust the results for the non-inertial frame). So, it would be to your advantage to use a frame that is inertial (or close enough to it that the errors are minimal)

.



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