Re: A Geometrical Proof of the Non-invariance of the Spacetime Interval

[Robert Cohen <Robert.Cohen@PO-BOX.ESU.EDU>]

I asked:

> Are x1 and x2 measured differently by each observer, assuming v<<c?

to which Hugh Haskell wrote:

> Since the scale factor gamma is only = 1 when v = 0 is the rel. vel.
> between the two frames, I assert that My statement is always correct,
> but since when v << c, gamma become indistinguishable from 1 to many
> decimal places, the differences between my measurements and your
> measurements will be essentially nil, so, to the precision you
> desire, you are also correct. But you get less correct as v
> increases, while I am correct at all velocities.

OK - I'll agree with that.  So, at v<<c, x1 and x2 are approximately
the same?

but...then RAUBER, JOEL wrote:

> I think DH is bothered by the fact that F' says |x2'-x1'| = 0 
> while F says
> |x2-x1| = LA--->San Diego distance.

So regardless of v, x1 and x2 are not even close to being the same?

Am I supposed to be less confused now?

____________________________________________
Robert Cohen; rcohen@po-box.esu.edu; 570-422-3428; http://www.esu.edu/~bbq
Physics, East Stroudsburg Univ., E. Stroudsburg, PA 18301