Re: What should a theory give us?

"harry" <harald.vanlintelButNotThis@xxxxxxx> wrote in message
news:1181134873_1813@xxxxxxxxxxxxxxxxxxx
Hmm... I already explained why it is erroneous to use the word "crush"...

I don't see that it is. They are phsycially shortened in length .. it snot
just an apparent shortening due ot how it is measured .. it is actually
physically shorter .. if something is physically make shorter so it fits in
a smaller space, then it is crushed. That LET (or at least O'Barr's version
of it) doesn't really offer any explanation of how or why that happens ..
except that it is somehow the ether doing it, and this ether applyies some
sort of crushing and slowing 'froce' onto matter that happens to correspond
with lorentz transforms and it applies to all matter and all types of
clocks.

And it sounds as if you are still a bit confused about clock sync.

No. I was only confused by O'Barrs explanation of what he says happens

I can see that the slowing of the clocks would mean that if they are
synchronised in the FoR and then moved apart, the difference in absolute
speed required to do that would result in the clocks going out-of-sync
(wrt the ether frame) .. so the absolute-velocity-related slowing would
have a side-effect of getting the clocks out of sync.

So for my example of three identical objects (when at rest) each moving
at different velocities (0, v, 2v), even though they are all then
actually different absolute lengths as a result of their absolute motiob,
the object moving at speed v will see the other large and small objects
as both being the same size (but shorter by gamma factor)

Congratulations! You now DO understand it. :-)

Yes

It appear the with SR proper length is maintained and space and time
appear different when views from other FoR .. but you see the correct
proper length for the FoR where an object is stationary. Whereas in LET
(at least O'Barr's version), objects actually physicaly shrink when
moving relative to the absolute ether, but it only appears to be the
correct length for the FoR where it is at rest, and it appears to have
other lengths from other frames, and we cannot tell which is the absolute
frame.

It seem the main difference is SR keeps proper length and LET has
physical lengths changed (wrt an ether).

The only difference is that "LET" provides a physical model for SRT.
Minkowski spacetime was meant as another physical model for SRT
(according to that, "time" and "space" can be transformed into each other
by a rotation).
Of course, the use of different models leads to different ways of
expressing the same laws.

Yes .. and that in one (SR) there is no physical crushing and slowing, only
the 'illusion' of it in frames of reference other than the one in which the
object is at rest .. and in the other (LET) there is physical crushing /
slowing in an unknown absolute ether frame, and only the 'illusion' of
things not being crushed / slowed in the FoR in which the object is at rest.
As far as other FoR go, both LET and SR have the 'illusion' of different
lengths and clock rates (ie we measure things differently) .. its only in
the supposed ether frame and the object rest frame that SR and LET have
quite different explanations.


.

Relevant Pages

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