🚀 go-pugleaf

On 31 Oct, 01:41, Tom Roberts <tjroberts...@sbcglobal.net> wrote in
sci.physics.relativity:
> Ken S. Tucker wrote:
> > Of course it's the
> > acceleration which causes the clocks
> > to go out of sync that initiates the
> > "dilation".
>
> Hmmm. The usual explanation is that it is not the acceleration
> but rather the difference in paths that generates the difference in the
> twins' elapsed proper times. Of course in SR it is not possible for two
> twins to separate and rejoin without at least one of them being
> accelerated somewhere between meetings.
>
> Claims that the accelerations "causes" this difference are rather
> strange, because one would then expect that a larger acceleration would
> induce a larger discrepancy -- that is not so:
>   a) keep the accelerations the same but lengthen the distance
>      between accelerations; the discrepancy increases.
>   b) keep the distance the same but change the acceleration;
>      the discrepancy is unchanged, or changed by only a tiny amount.
>   c) it is possible to construct a scenario in which both twins have
>      a constant acceleration (both traveling in circles), but the
>      twin with the smaller acceleration also has the smaller elapsed
>      proper time between their meetings (naively one would expect
>      the twin with smaller acceleration to be "more inertial" and
>      therefore have a larger elapsed proper time).
>   d) construct identical clocks in different inertial frames, so
>      none of them ever experience any acceleration; still the usual
>      "time dilation" applies.
>
> This is all consistent with the discrepancy in elapsed proper times
> being due to the different paths. I see no clear argument that
> "acceleration causes time dilation" at all.
>
> Tom Roberts

Roberts Roberts your criminal brothers destroyed any scientific
rationality in Einstein zombie world long time ago so nobody would ask
you to elaborate on your new discovery (contradicting Einstein's 1918
discovery) acording to which acceleration does not cause the greater
youthfulness of the travelling twin but something you call "the
difference in paths" does. If you had explained that the greater
youthfulness of the travelling twin was caused by the fact that the
greenness of the crocodile exceeds its length, Einstein zombie world
would be just as grateful.

Pentcho Valev