Re: Article: A Century of Einstein

From: Patrick Reany (reany_at_asu.edu)
Date: 09/07/04 

Date: 7 Sep 2004 10:48:16 -0700

"Ole D. Rughede" <ole.rughede@privat.dk> wrote in message news:<413d8ba3$0$220$edfadb0f@dread11.news.tele.dk>...
> "Bill Hobba" <bhobba@rubbish.net.au> skrev i en meddelelse
> news:zv6%c.21756$D7.12770@news-server.bigpond.net.au...
> >
> > "Ole D. Rughede" <ole.rughede@privat.dk> wrote in message
> > news:413c4409$0$250$edfadb0f@dread11.news.tele.dk...
[snip]

> >
> > The peer reviwed papers invalidating the singularity theorems that
> show
> > otherwise are located at?
>
>
> J. M. Overduin and P. S. Wesson, Kaluza-Klein Gravity,
> 20.April 2001, p. 60-61:
>
[snip]
> Something like this occurs even in four-dimensional general
> relativity when one works with comoving spatial coordinates,
> in which galaxies remain forever apart and there is no initial
> singularity [170]. Relativity is founded on the idea that there
> should be no preferred coordinate systems; yet in spatially
> comoving frames there is no big bang.

And it doesn't rain in the frame of the meteorologist who falls with
the rain drops. We must be clear about what the general principle of
relativity is really about:

GPR states that all reference frames are equally good for the
establishment of the general laws of physics.

Now, there's more to modeling reality (phenomena) than general laws of
physics:

Modeling physical reality = (general laws) + (happenstance)
                             + (interventions).

By "happenstance" I mean the distribution of matter-energy in the
universe. By "interventions" I mean everything else that is not the
previous two categories yet which could conceivably affect the set of
all physical events.

For example, whether or not a comet hits the earth depends on 1) the
general laws of physics that determine orbits in the solar system, on
2) the happenstance of whether or not the orbits of the comet and the
earth coincide in the worst way, and on 3) the possible interventions
by God, human-made rockets, Cylons, random events, whatever.

Patrick

Relevant Pages

  • Re: Article: A Century of Einstein
    ... GPR states that all reference frames are equally good for the ... establishment of the general laws of physics. ...
    (sci.physics.relativity)
  • Re: A message to non-relativists
    ... >> I think that this misrepresents what Minkowski did. ... > the soil of experimental physics, ... future development of the general laws of physics. ... reference frames, and those would be the invariants of the ...
    (sci.physics.relativity)
  • Re: A message to non-relativists
    ... He seems to be just as positive that physics ... goal of physics as the production of general laws, ... You need reference frames because it is ...
    (sci.physics.relativity)
  • Re: A message to non-relativists
    ... the soil of experimental physics, ... > goal of physics as the production of general laws, ... You need reference frames because it is ...
    (sci.physics.relativity)
  • Re: Article: A Century of Einstein
    ... >> relativity when one works with comoving spatial coordinates, ... >> comoving frames there is no big bang. ... > establishment of the general laws of physics. ...
    (sci.physics)