Re: Propagation of EM waves in a relativistic medium - some mathematical details
From: Ole D. Rughede (ole.rughede_at_privat.dk)
Date: 07/04/04
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Date: Sun, 4 Jul 2004 02:19:08 +0200
"LEJ Brouwer" <intuitionist1@yahoo.com> skrev i en meddelelse
news:d9265623cd1a4223561236a95f76e39a@news.teranews.com...
>
> "Ole D. Rughede" <ole.rughede@privat.dk> wrote in message
> news:40e5cc5d$0$206$edfadb0f@dread11.news.tele.dk...
> >
> > "Julian Streicher" <anthony@utdallas.edu> skrev i en meddelelse
> > news:4b8902f491a88d47c620819680273675.87454@mygate.mailgate.org...
> > > Is an aether really necessary to send photons through space?
>
> No, because they are already capable of being described without the aether
> (i.e in terms of oscillating 'fields'). However the reason fields have
come
> into common usage is precisely because of the failure to find a successful
> mathematical description of the aether in which EM waves were expected to
> propagate (after all, all macroscopic waves that we observe propagate in
> some medium, so why should EM waves be different?). Fields have become so
> well established now that it is hard for us (even after discovering a
> sensible mathematical description) to go back a hundred odd years to the
> time when the existence of an aether would have seemed to make much more
> sense.
>
> > Emitted photons *are* the aether, where no photons exist.
(To snip the rest of my arguing here could be somewhat misleading,
and Streicher asked about necessity of transfer through an aether
medium, not for the possibility of more or less correct or paradoxial
descriptions of photon transfer through empty space along theoretical,
abstract field lines magically connecting source and observer or goal)
>
> Maybe in your (Ole's) theory, but certainly not in mine. Having said that,
> the relativistic continuum I have described is not really the same as the
> aether anyway.
>
> - Sabbir.
>
Agree. - As you mentioned about your original paper:
"... describing how classical electrodynamics might be derived from
the motion of an underlying space-filling relativistic continuum
(which some may wish to interpret as a kind of "luminiferous aether")",
you have not an aether theory, and you still need to incorporate the
physical meaning of your "moving space-filling relativistic medium".
I therefore emphasized the importance of energy and energy-density,
the "vacuum energy density" as you call it in your present paper.
In my answer to Robert Kolker 02.07.04 17:38 I have listed a
number (but not all) of the physical qualities peculiar for the aether,
which have to be integral items of the aether theory.
In another posting you asked some questions that may pin-point
the problem as follows:
[Ole]
> Main postulate is that the aether is the spatial medium of all physical
> fields and forces. It is pure electromagnetic energy provided by the
> radiation from all astrophysical objects
[Sabbir]
A medium can have energy, but I don't understand how it can *be* energy?
Can energy have energy, like water have water, trees wood and timber?
[Ole]
> We see (and feel) the radiation from the Sun and all the stars, so we
> know what the aether medium is, and what should be studied in
> order to understand the causal reasons for the laws of physics.
[Sabbir]
I don't see how simply knowing that the aether is the medium responsible for
the propagation of EM waves can imply so much.
Any and every physical proces or phenomenon from QM to GR and
cosmology takes place in the relativistic metric-energetic aether field
without any exception. Even in vacuum at T(CMBR), or artificially
cooled below that, the aether and the aether fields are present.
(Cf. Bose-Einstein condensations confirming theoretical predictions).
Heat and radiation is the EM-energy of the aether which therefore
obeys the laws of thermodynamics without being a material medium,
but a very strange energetic medium of free radiation present every-
where in space between sources and sinks. Any massive body in
space, from the elementary particles to the heaviest stars and galaxies,
is both source and sink by enduring interaction with the aether.
We often overlook or forget that. Some even denies evident facts!
Space, time, and free radiant energy are inseparably interconnected!
[Ole]
> Force is exchange of energy, and since no force of distance may be
> accepted, we are in case of gravity and electrodynamics left with the
> result of energy exchange between ponderable masses and the aether,
> and through the mediating energy of the aether when forces are acting
> through space by energy exchange between interacting bodies.
[Sabbir]
Okay, I guess what you are saying here is that energy transfer takes place
via the aether (and energy = force * distance).
Right, when natural interaction between massive bodies, whether by
EM radiation, gravity, electric, or magnetic interaction. - (Energy has
many forms, as you well know, and is always conserved).
Ole
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