🚀 go-pugleaf

http://philsci-archive.pitt.edu/archive/00001661/01/Minkowski.pdf
Harvey R. Brown and Oliver Pooley: "An examination of the status of
length contraction in the context of Einstein's 1905 treatment of SR
will illustrate the way in which principle theories fail to be
explanatory. Recall that in this derivation the first conclusion drawn
from the two fundamental postulates is the invariance of the speed of
light, that it has the same constant value in all inertial frames.
This gives the 'k-Lorentz transformations', the Lorentz
transformations up to a velocity dependent scale factor, k. What has,
in effect, been shown is that if the speed of light as measured with
respect to frame F0 is to be found to be the same value as when
measured with respect to the 'resting frame' F, then rods and clocks
at rest in F0 had better contract and dilate (with respect to frame F)
in the coordinated way that is encoded in the k-Lorentz
transformations. One then appeals to the relativity principle again--
the principle entails that these coordinated contractions and
dilations must be exactly the same function of velocity for each
inertial frame, along with the principle of spatial isotropy, in order
to narrow down the deformations to just those encoded in the Lorentz
transformations. What has been shown is that rods and clocks must
behave in quite particular ways in order for the two postulates to be
true together. But this hardly amounts to an explanation of such
behaviour. Rather things go the other way around. It is because rods
and clocks behave as they do, in a way that is consistent with the
relativity principle, that light is measured to have the same speed in
each inertial frame."

That is, the speed of light is constant because Einsteinians can trap
a long train inside a short tunnel:

http://www.youtube.com/watch?v=VSRIyDfo_mY&mode=related&search=

and also  a 80m long pole inside a 40m long barn:

http://www.math.ucr.edu/home/baez/physics/Relativity/SR/barn_pole.html
"These are the props. You own a barn, 40m long, with automatic doors
at either end, that can be opened and closed simultaneously by a
switch. You also have a pole, 80m long, which of course won't fit in
the barn....So, as the pole passes through the barn, there is an
instant when it is completely within the barn. At that instant, you
close both doors simultaneously, with your switch. Of course, you open
them again pretty quickly, but at least momentarily you had the
contracted pole shut up in your barn."

If Einsteinians were unable to perform miracles of this kind, the
speed of light would be variable and would obey the equation c'=c+v
given by Newton's emission theory of light, where v is the relative
speed of the light source and the observer.

Pentcho Valev
pvalev@yahoo.com