🚀 go-pugleaf

On Jan 10, 2:35 pm, HW@....(Dr. Henri Wilson) wrote:
> On Thu, 10 Jan 2008 07:47:35 -0800 (PST), "Sue..." <suzysewns...@yahoo.com.au>
> wrote:
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> >On Jan 10, 9:58 am, Don Stockbauer <don.stockba...@gmail.com> wrote:
> >> On Jan 10, 5:28 am, Pentcho Valev <pva...@yahoo.com> wrote:
>
> >> >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:
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> >> >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
> >> > pva...@yahoo.com
>
> >> Isn't the velocity of light the same irregardless of the motion of the
> >> source or the observer?  Only a frequency change results?  But....what
> >> is the light traveling relative to???????-
>
> >The dielectric of free-space:
>
> >Propagation in a dielectric medium
> >http://farside.ph.utexas.edu/teaching/em/lectures/node98.html
> >http://en.wikipedia.org/wiki/Free_space
> >http://www-ssg.sr.unh.edu/ism/what.html
>
> 'EMPTY' space has NO dielectric properties.

What makes you say that?
When are you going to learn that physicists don't dictate physical
laws to nature? It goes the other way around.

>
> If one tries to measure same, one merely measures the properties of one's own
> apparatus....and probably gets 'c'.
>
> >Sue...
>
> > Hide quoted text -
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> >> - Show quoted text -
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> Henri Wilson. ASTC,BSc,DSc(T)
>
> www.users.bigpond.com/hewn/index.htm- Hide quoted text -
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> - Show quoted text -