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Topic: Preferred Frame Theory indistinguishable from SR
Replies: 204   Last Post: Jul 13, 2010 11:11 AM

 Messages: [ Previous | Next ]
 Y.Porat Posts: 348 Registered: 1/1/07
Re: Preferred Frame Theory indistinguishable from SR
Posted: Jul 4, 2010 11:40 AM

On Jul 4, 2:02 pm, stevendaryl3...@yahoo.com (Daryl McCullough) wrote:
> harald says...
>
>
>

> >On Jul 3, 4:10=A0pm, stevendaryl3...@yahoo.com (Daryl McCullough) wrote:
> >> I'm not sure what paradox you are referring to, then.
>
> >I did some digging to understand the main cause of confusion. What I
> >found, is the clock paradox started out as the one that Einstein was
> >confronted with, as criticism of his GRT. At least, concerning SRT,
> >before the development of GRT, I found no trace of such a paradox in
> >the old literature. Did you?

>
> No, but I haven't really looked. But I guess it makes sense.
> From the point of view of SR, it is clear that the traveling
> twin is different from the stay-at-home twin, since he is in
> a noninertial coordinate system. But if you generalize to allow
> *any* coordinate system (inertial or not) then you have to explain
> what's wrong with viewing the traveling twin at rest.
>
> But it's not really a paradox with GR, either, since GR doesn't
> use the Lorentz transforms to relate noninertial coordinate systems.
>
> It's hard for me to see how the "twin paradox" is a paradox in any
> sense other than being a surprising result.
>
>
>

> >> GR doesn't really *have* a notion of "rest".
>
> >Einstein's GRT holds that reference systems in any form of motion may
> >be used as physical reference system, relative to which objects are
> >"in rest" - that's the basis of the "clock" or "twin" paradox, and how
> >it started.

> >> For a particular coordinate system,
> >> you can use the term "at rest" to mean that the time derivative of the
> >>spacial coordinates are all zero, but that doesn't have any particular
> >> physical meaning, except in the cases where the metric is time-independent.

>
> >> >> because GR is a generalization of SR. In the case of empty space far
> >> >> from any large gravitating bodies, GR reduces to SR, so any GR solution
> >> >> to the twin paradox would have to have already been a solution in SR.

>
> >> >Irrelevant.
>
> >> It's not irrelevant to *MY* point. It is my point. And this is my
> >> thread, so my point counts.

>
> >Irrelevant for Einstein's clock paradox, which KW brought up in your

>
> I thought KW was suggesting that Einstein used GR as a *solution* to the
> paradox. I was responding to the idea that GR was a solution (whether or not
> Einstein viewed it as such).
>
> --
> Daryl McCullough
> Ithaca, NY

------------------
fucken mathematicians thik that they can solve with it all the
problems ofthis universe !!:
including changes in material
and biological world !!
the biological entity of a living crweature
is billion of times more complicate than that
fuckn relativity problem !!
t
he biological process is not meaningfully and certainly not governed
by movement or those
formula
it shows to what extent of
vanity and impertinence
those mathematicians got to !!
2
a piece of metal will not as well change
or become older or younger !!!

Y.Porat
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