Pentcho Valev wrote:

Jeckyl wrote in sci.physics.relativity:

"Tom Roberts" wrote in message

t...

Jeckyl wrote:

On Thu, 31 May 2007 13:53:48 -0500, Tom Roberts

wrote:

The "Lorentzian form of relativity", reduced to its essentials, is:

A) there is a unique inertial frame in which the ether is at rest

Ok

B) any inertial frame's coordinates are related to those of the

ether frame by a Lorentz transform

Similarly reduced to its essentials, SR is:

C) any inertial frame's coordinates are related to any other inertial

frame's coordinates by a Lorentz transform

One can easily show mathematically that A+B imply C.

Hang on .. let me see

If we have three objects at rest in three inertial FoR A,B,C and we have

(say) that A is at rest relative to the 'ether' FoR, B is moving at

velocity v relative to A, and C is moving at 2v relative to A. So

according to premise A) and B) above, an object A has no length

contraction or time dilation (because it is stationary in the ether

frame), object B has some, and object C has more. So an observer in FoR

B would see objects in A as expanded and objects in C as contracted.

This is not true, basically because "length contraction" and "time

dilation" are not the entire story, and there is also "relativity of

simultaneity", and all 3 interrelate with each other.

I understand all that in terms of Lorentz transforms as part of SR ..

You don't. Consider carefully Master Tom Roberts' wisdom:

http://groups.google.com/group/sci.p...2471a17131c4b?

Tom Roberts: "if it is ultimately discovered that the photon has a

nonzero mass (i.e. light in vacuum does not travel at the invariant

speed of the Lorentz transform), SR would be unaffected but both

Maxwell's equations and QED would be refuted (or rather, their domains

of applicability would be reduced)."
Curiously Tom Roberts' theory (plagiarized from Jean-Marc Levy-Leblond

and possibly other relativity hypnotists) according to which if light

in vacuum does not travel at the invariant speed of the Lorentz

transform, special relativity would be unaffected, does not seem to be

very popular in Einstein criminal cult. Perhaps cleverer hypnotists

feel that Tom Roberts' theory is too silly to be used as camouflage.

Pentcho Valev