Re: Two photons... relative distance question

Dear Curious:

"Curious" <anthonyroseuk-curious@xxxxxxxxxxx> wrote in message
news:1115460223.017965.207910@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Thanks for your reply - very interesting indeed.
> I'm puzzled by this though:
> In any frame, if the time t is a particular value,
> is the time not that same value for any
> location in that frame?

All locations in that frame will eventually "pass through that
time value", yes. But as you formulated, distance correlates to
delay *in observation*. It is not possible to know that
correctly synchronized clocks achieve the same value *now* from
some absolute God-like perspective. We are stuck with what we
can measure, so we typically limit a frame size to "something
that our instruments cannot measure a delay across". And this is
getting smaller.

We already had problems with "meeting at noon", when two people
are from different time zones.

David A. Smith


.

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