Re: Speed gedanken time (repaired) time dilation 099


"OG" <owen@xxxxxxxxxxxxxxxxxxx> wrote in message
news:459oi0F5lehjU1@xxxxxxxxxxxxxxxxx
| The relative speed IS the transformation for the speeds between the two
| frames. That's what a transformation is.

So in your rubber ruler world.
You need to transform speeds between two frames?
There is not transformation needed.

| But (A) and (B) each make physical measurements for the separation between
| the lines.

No,
(A) made a physical measurement,
(B) can only make an abstract measurement.


| (A) has a perfectly valid means of physically measuring the separation and
| measures at 1 mile separation
| (B) has a perfectly valid means of physically measuring the separation
| andmeasures at 0.87 miles separation.

No, (B) has no perfect valid "physical" measurement at all.
It has an abstract method and if such abstract method does
not show the same as a true "physical" measurement does,
then there is something wrong with your "abstracting" method.


| Who is to say which one is right or wrong?

The physical is correct, the abstract has problems unless
it matches the physical.



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