From: Mike Cavedon on
On Jul 7, 1:13 pm, Sam Wormley <sworml...(a)gmail.com> wrote:
> On 7/7/10 8:41 AM, kenseto wrote:
>
> > SR is an incomplete aether theory.
>
> Einstein wrote in 1905:
>   "The introduction of a "luminiferous ether" will prove
>    to be superfluous inasmuch as the view here to be
>    developed will not require an "absolutely stationary
>    space" provided with special properties, nor assign a
>    velocity-vector to a point of the empty space in which
>    electromagnetic processes take place".
>
> See:
>
> ON THE ELECTRODYNAMICS OF MOVING BODIES
> By A. Einstein
> June 30, 1905
>
>    It is known that Maxwell's electrodynamics--as usually
>    understood at the present time--when applied to moving
>    bodies, leads to asymmetries which do not appear to be
>    inherent in the phenomena.
>
>    Take, for example, the reciprocal electrodynamic action
>    of a magnet and a conductor. The observable phenomenon
>    here depends only on the relative motion of the conductor
>    and the magnet, whereas the customary view draws a sharp
>    distinction between the two cases in which either the one
>    or the other of these bodies is in motion. For if the
>    magnet is in motion and the conductor at rest, there
>    arises in the neighbourhood of the magnet an electric
>    field with a certain definite energy, producing a current
>    at the places where parts of the conductor are situated.
>
>    But if the magnet is stationary and the conductor in
>    motion, no electric field arises in the neighbourhood of
>    the magnet. In the conductor, however, we find an
>    electromotive force, to which in itself there is no
>    corresponding energy, but which gives rise--assuming
>    equality of relative motion in the two cases
>    discussed--to electric currents of the same path and
>    intensity as those produced by the electric forces in the
>    former case.
>
>    Examples of this sort, together with the unsuccessful
>    attempts to discover any motion of the earth relatively
>    to the "light medium," suggest that the phenomena of
>    electrodynamics as well as of mechanics possess no
>    properties corresponding to the idea of absolute rest.
>
>    They suggest rather that, as has already been shown to  (1)
>    the first order of small quantities, the same laws of
>    electrodynamics and optics will be valid for all frames
>    of reference for which the equations of mechanics hold
>    good. We will raise this conjecture (the purport of which
>    will hereafter be called the ``Principle of Relativity'')
>    to the status of a postulate,
>
>    and also introduce another postulate, which is only     (2)
>    apparently irreconcilable with the former, namely, that
>    light is always propagated in empty space with a definite
>    velocity c which is independent of the state of motion of
>    the emitting body.
>
>    These two postulates suffice for the attainment of a
>    simple and consistent theory of the electrodynamics of
>    moving bodies based on Maxwell's theory for stationary
>    bodies.
>
>    The introduction of a "luminiferous ether" will prove
>    to be superfluous inasmuch as the view here to be
>    developed will not require an "absolutely stationary
>    space" provided with special properties, nor assign a
>    velocity-vector to a point of the empty space in which
>    electromagnetic processes take place.
>
>    And, of course the paper goes on to develop the ideas
>    and make his case...

What part of 'inasmuch as the view here to be developed will not
require an "absolutely stationary space"' are you not able to
understand?

'Ether and the Theory of Relativity by Albert Einstein'
http://www-groups.dcs.st-and.ac.uk/~history/Extras/Einstein_ether.html

"According to the general theory of relativity space without ether is
unthinkable"

Are you suggesting Einstein choose to believe in two ethers?

Of course not. What you are doing is parsing the sentence you quoted
in order to purposely misinterpret what Einstein said. Einstein is
specifically referring to an absolutely stationary space as
superfluous.

"the state of the [ether] is at every place determined by connections
with the matter and the state of the ether in neighbouring places ...
disregarding the causes which condition its state".

The state of the aether as determined by its connections with the
matter and the state of the aether in neighboring places is the
aether's state of displacement.

The cause which conditions its state is its displacement by matter.
From: PD on
On Jul 7, 5:26 pm, Mike Cavedon <mikecave...(a)gmail.com> wrote:
> On Jul 7, 1:13 pm, Sam Wormley <sworml...(a)gmail.com> wrote:
>
>
>
>
>
> > On 7/7/10 8:41 AM, kenseto wrote:
>
> > > SR is an incomplete aether theory.
>
> > Einstein wrote in 1905:
> >   "The introduction of a "luminiferous ether" will prove
> >    to be superfluous inasmuch as the view here to be
> >    developed will not require an "absolutely stationary
> >    space" provided with special properties, nor assign a
> >    velocity-vector to a point of the empty space in which
> >    electromagnetic processes take place".
>
> > See:
>
> > ON THE ELECTRODYNAMICS OF MOVING BODIES
> > By A. Einstein
> > June 30, 1905
>
> >    It is known that Maxwell's electrodynamics--as usually
> >    understood at the present time--when applied to moving
> >    bodies, leads to asymmetries which do not appear to be
> >    inherent in the phenomena.
>
> >    Take, for example, the reciprocal electrodynamic action
> >    of a magnet and a conductor. The observable phenomenon
> >    here depends only on the relative motion of the conductor
> >    and the magnet, whereas the customary view draws a sharp
> >    distinction between the two cases in which either the one
> >    or the other of these bodies is in motion. For if the
> >    magnet is in motion and the conductor at rest, there
> >    arises in the neighbourhood of the magnet an electric
> >    field with a certain definite energy, producing a current
> >    at the places where parts of the conductor are situated.
>
> >    But if the magnet is stationary and the conductor in
> >    motion, no electric field arises in the neighbourhood of
> >    the magnet. In the conductor, however, we find an
> >    electromotive force, to which in itself there is no
> >    corresponding energy, but which gives rise--assuming
> >    equality of relative motion in the two cases
> >    discussed--to electric currents of the same path and
> >    intensity as those produced by the electric forces in the
> >    former case.
>
> >    Examples of this sort, together with the unsuccessful
> >    attempts to discover any motion of the earth relatively
> >    to the "light medium," suggest that the phenomena of
> >    electrodynamics as well as of mechanics possess no
> >    properties corresponding to the idea of absolute rest.
>
> >    They suggest rather that, as has already been shown to  (1)
> >    the first order of small quantities, the same laws of
> >    electrodynamics and optics will be valid for all frames
> >    of reference for which the equations of mechanics hold
> >    good. We will raise this conjecture (the purport of which
> >    will hereafter be called the ``Principle of Relativity'')
> >    to the status of a postulate,
>
> >    and also introduce another postulate, which is only     (2)
> >    apparently irreconcilable with the former, namely, that
> >    light is always propagated in empty space with a definite
> >    velocity c which is independent of the state of motion of
> >    the emitting body.
>
> >    These two postulates suffice for the attainment of a
> >    simple and consistent theory of the electrodynamics of
> >    moving bodies based on Maxwell's theory for stationary
> >    bodies.
>
> >    The introduction of a "luminiferous ether" will prove
> >    to be superfluous inasmuch as the view here to be
> >    developed will not require an "absolutely stationary
> >    space" provided with special properties, nor assign a
> >    velocity-vector to a point of the empty space in which
> >    electromagnetic processes take place.
>
> >    And, of course the paper goes on to develop the ideas
> >    and make his case...
>
> What part of 'inasmuch as the view here to be developed will not
> require an "absolutely stationary space"' are you not able to
> understand?
>
> 'Ether  and the Theory of Relativity by Albert Einstein'http://www-groups.dcs.st-and.ac.uk/~history/Extras/Einstein_ether.html
>
> "According to the general theory of relativity space without ether is
> unthinkable"
>
> Are you suggesting Einstein choose to believe in two ethers?

Yes, exactly. Read the later part of the second paper, where he
explains this:
"Recapitulating, we may say that according to the general theory of
relativity space is endowed with physical qualities; in this sense,
therefore, there exists an ether. According to the general theory of
relativity space without ether is unthinkable; for in such space there
not only would be no propagation of light, but also no possibility of
existence for standards of space and time (measuring-rods and clocks),
nor therefore any space-time intervals in the physical sense. But this
ether may not be thought of as endowed with the quality characteristic
of ponderable media, as consisting of parts which may be tracked
through time. The idea of motion may not be applied to it."

The luminiferous ether which was referred to in the first paper was
precisely that: endowed with qualities characteristic of ponderable
media, and whose motion could be tracked with time. That was the point
of the MMX, to measure the motion of the ether with respect to the
apparatus.

So yes indeed, Michael P. Cavedon, QA engineer for a software company,
Einstein was talking about two different kinds of ether, and his
latter paper aimed to make precisely this distinction. That
distinction could not be made any plainer.

Thank you for clearly laying out that you cannot read an article for
comprehension to save your life.


>
> Of course not. What you are doing is parsing the sentence you quoted
> in order to purposely misinterpret what Einstein said. Einstein is
> specifically referring to an absolutely stationary space as
> superfluous.
>
> "the state of the [ether] is at every place determined by connections
> with the matter and the state of the ether in neighbouring places ...
> disregarding the causes which condition its state".
>
> The state of the aether as determined by its connections with the
> matter and the state of the aether in neighboring places is the
> aether's state of displacement.
>
> The cause which conditions its state is its displacement by matter.- Hide quoted text -
>
> - Show quoted text -

From: mpc755 on
On Jul 7, 1:13 pm, Sam Wormley <sworml...(a)gmail.com> wrote:
> On 7/7/10 8:41 AM, kenseto wrote:
>
> > SR is an incomplete aether theory.
>
> Einstein wrote in 1905:
>   "The introduction of a "luminiferous ether" will prove
>    to be superfluous inasmuch as the view here to be
>    developed will not require an "absolutely stationary
>    space" provided with special properties, nor assign a
>    velocity-vector to a point of the empty space in which
>    electromagnetic processes take place".
>
> See:
>
> ON THE ELECTRODYNAMICS OF MOVING BODIES
> By A. Einstein
> June 30, 1905
>
>    It is known that Maxwell's electrodynamics--as usually
>    understood at the present time--when applied to moving
>    bodies, leads to asymmetries which do not appear to be
>    inherent in the phenomena.
>
>    Take, for example, the reciprocal electrodynamic action
>    of a magnet and a conductor. The observable phenomenon
>    here depends only on the relative motion of the conductor
>    and the magnet, whereas the customary view draws a sharp
>    distinction between the two cases in which either the one
>    or the other of these bodies is in motion. For if the
>    magnet is in motion and the conductor at rest, there
>    arises in the neighbourhood of the magnet an electric
>    field with a certain definite energy, producing a current
>    at the places where parts of the conductor are situated.
>
>    But if the magnet is stationary and the conductor in
>    motion, no electric field arises in the neighbourhood of
>    the magnet. In the conductor, however, we find an
>    electromotive force, to which in itself there is no
>    corresponding energy, but which gives rise--assuming
>    equality of relative motion in the two cases
>    discussed--to electric currents of the same path and
>    intensity as those produced by the electric forces in the
>    former case.
>
>    Examples of this sort, together with the unsuccessful
>    attempts to discover any motion of the earth relatively
>    to the "light medium," suggest that the phenomena of
>    electrodynamics as well as of mechanics possess no
>    properties corresponding to the idea of absolute rest.
>
>    They suggest rather that, as has already been shown to  (1)
>    the first order of small quantities, the same laws of
>    electrodynamics and optics will be valid for all frames
>    of reference for which the equations of mechanics hold
>    good. We will raise this conjecture (the purport of which
>    will hereafter be called the ``Principle of Relativity'')
>    to the status of a postulate,
>
>    and also introduce another postulate, which is only     (2)
>    apparently irreconcilable with the former, namely, that
>    light is always propagated in empty space with a definite
>    velocity c which is independent of the state of motion of
>    the emitting body.
>
>    These two postulates suffice for the attainment of a
>    simple and consistent theory of the electrodynamics of
>    moving bodies based on Maxwell's theory for stationary
>    bodies.
>
>    The introduction of a "luminiferous ether" will prove
>    to be superfluous inasmuch as the view here to be
>    developed will not require an "absolutely stationary
>    space" provided with special properties, nor assign a
>    velocity-vector to a point of the empty space in which
>    electromagnetic processes take place.
>
>    And, of course the paper goes on to develop the ideas
>    and make his case...

What part of 'inasmuch as the view here to be developed will not
require an "absolutely stationary space"' are you unable to
understand?

'Ether and the Theory of Relativity by Albert Einstein'
http://www-groups.dcs.st-and.ac.uk/~history/Extras/Einstein_ether.html

"According to the general theory of relativity space without ether is
unthinkable"

Are you suggesting Einstein choose to believe in two ethers?

Of course not. What you are doing is parsing the sentence you quoted
in order to purposely misinterpret what Einstein said. Einstein is
specifically referring to an absolutely stationary space as
superfluous.

"the state of the [ether] is at every place determined by connections
with the matter and the state of the ether in neighbouring places ...
disregarding the causes which condition its state".

The state of the aether as determined by its connections with the
matter and the state of the aether in neighboring places is the
aether's state of displacement.

The cause which conditions its state is its displacement by matter.

Einstein's 'First' paper was all about the ether.

'Albert Einstein's 'First' Paper
http://www.worldscibooks.com/etextbook/4454/4454_chap1.pdf
From: artful on
On Jul 8, 8:34 am, PD <thedraperfam...(a)gmail.com> wrote:
> On Jul 7, 5:26 pm, Mike Cavedon <mikecave...(a)gmail.com> wrote:
>
>
>
>
>
> > On Jul 7, 1:13 pm, Sam Wormley <sworml...(a)gmail.com> wrote:
>
> > > On 7/7/10 8:41 AM, kenseto wrote:
>
> > > > SR is an incomplete aether theory.
>
> > > Einstein wrote in 1905:
> > >   "The introduction of a "luminiferous ether" will prove
> > >    to be superfluous inasmuch as the view here to be
> > >    developed will not require an "absolutely stationary
> > >    space" provided with special properties, nor assign a
> > >    velocity-vector to a point of the empty space in which
> > >    electromagnetic processes take place".
>
> > > See:
>
> > > ON THE ELECTRODYNAMICS OF MOVING BODIES
> > > By A. Einstein
> > > June 30, 1905
>
> > >    It is known that Maxwell's electrodynamics--as usually
> > >    understood at the present time--when applied to moving
> > >    bodies, leads to asymmetries which do not appear to be
> > >    inherent in the phenomena.
>
> > >    Take, for example, the reciprocal electrodynamic action
> > >    of a magnet and a conductor. The observable phenomenon
> > >    here depends only on the relative motion of the conductor
> > >    and the magnet, whereas the customary view draws a sharp
> > >    distinction between the two cases in which either the one
> > >    or the other of these bodies is in motion. For if the
> > >    magnet is in motion and the conductor at rest, there
> > >    arises in the neighbourhood of the magnet an electric
> > >    field with a certain definite energy, producing a current
> > >    at the places where parts of the conductor are situated.
>
> > >    But if the magnet is stationary and the conductor in
> > >    motion, no electric field arises in the neighbourhood of
> > >    the magnet. In the conductor, however, we find an
> > >    electromotive force, to which in itself there is no
> > >    corresponding energy, but which gives rise--assuming
> > >    equality of relative motion in the two cases
> > >    discussed--to electric currents of the same path and
> > >    intensity as those produced by the electric forces in the
> > >    former case.
>
> > >    Examples of this sort, together with the unsuccessful
> > >    attempts to discover any motion of the earth relatively
> > >    to the "light medium," suggest that the phenomena of
> > >    electrodynamics as well as of mechanics possess no
> > >    properties corresponding to the idea of absolute rest.
>
> > >    They suggest rather that, as has already been shown to  (1)
> > >    the first order of small quantities, the same laws of
> > >    electrodynamics and optics will be valid for all frames
> > >    of reference for which the equations of mechanics hold
> > >    good. We will raise this conjecture (the purport of which
> > >    will hereafter be called the ``Principle of Relativity'')
> > >    to the status of a postulate,
>
> > >    and also introduce another postulate, which is only     (2)
> > >    apparently irreconcilable with the former, namely, that
> > >    light is always propagated in empty space with a definite
> > >    velocity c which is independent of the state of motion of
> > >    the emitting body.
>
> > >    These two postulates suffice for the attainment of a
> > >    simple and consistent theory of the electrodynamics of
> > >    moving bodies based on Maxwell's theory for stationary
> > >    bodies.
>
> > >    The introduction of a "luminiferous ether" will prove
> > >    to be superfluous inasmuch as the view here to be
> > >    developed will not require an "absolutely stationary
> > >    space" provided with special properties, nor assign a
> > >    velocity-vector to a point of the empty space in which
> > >    electromagnetic processes take place.
>
> > >    And, of course the paper goes on to develop the ideas
> > >    and make his case...
>
> > What part of 'inasmuch as the view here to be developed will not
> > require an "absolutely stationary space"' are you not able to
> > understand?
>
> > 'Ether  and the Theory of Relativity by Albert Einstein'http://www-groups.dcs.st-and.ac.uk/~history/Extras/Einstein_ether.html
>
> > "According to the general theory of relativity space without ether is
> > unthinkable"
>
> > Are you suggesting Einstein choose to believe in two ethers?
>
> Yes, exactly. Read the later part of the second paper, where he
> explains this:
> "Recapitulating, we may say that according to the general theory of
> relativity space is endowed with physical qualities; in this sense,
> therefore, there exists an ether. According to the general theory of
> relativity space without ether is unthinkable; for in such space there
> not only would be no propagation of light, but also no possibility of
> existence for standards of space and time (measuring-rods and clocks),
> nor therefore any space-time intervals in the physical sense. But this
> ether may not be thought of as endowed with the quality characteristic
> of ponderable media, as consisting of parts which may be tracked
> through time. The idea of motion may not be applied to it."
>
> The luminiferous ether which was referred to in the first paper was
> precisely that: endowed with qualities characteristic of ponderable
> media, and whose motion could be tracked with time. That was the point
> of the MMX, to measure the motion of the ether with respect to the
> apparatus.
>
> So yes indeed, Michael P. Cavedon, QA engineer for a software company,
> Einstein was talking about two different kinds of ether, and his
> latter paper aimed to make precisely this distinction. That
> distinction could not be made any plainer.
>
> Thank you for clearly laying out that you cannot read an article for
> comprehension to save your life.
>
>
>
>
>
> > Of course not. What you are doing is parsing the sentence you quoted
> > in order to purposely misinterpret what Einstein said. Einstein is
> > specifically referring to an absolutely stationary space as
> > superfluous.
>
> > "the state of the [ether] is at every place determined by connections
> > with the matter and the state of the ether in neighbouring places ...
> > disregarding the causes which condition its state".
>
> > The state of the aether as determined by its connections with the
> > matter and the state of the aether in neighboring places is the
> > aether's state of displacement.
>
> > The cause which conditions its state is its displacement by matter.- Hide quoted text -
>
> > - Show quoted text -

Effectively, the 'aether' of GR is simply a label for spacetime and
its properties. Spacetime isn't just a property-less dimensionless
void, but rather is something that has particular spatial and temporal
dimensions and a finite maximum 'speed' at which information can be
propagated through it etc etc.
From: mpc755 on
On Jul 7, 8:41 pm, artful <artful...(a)hotmail.com> wrote:
> On Jul 8, 8:34 am, PD <thedraperfam...(a)gmail.com> wrote:
>
>
>
> > On Jul 7, 5:26 pm, Mike Cavedon <mikecave...(a)gmail.com> wrote:
>
> > > On Jul 7, 1:13 pm, Sam Wormley <sworml...(a)gmail.com> wrote:
>
> > > > On 7/7/10 8:41 AM, kenseto wrote:
>
> > > > > SR is an incomplete aether theory.
>
> > > > Einstein wrote in 1905:
> > > >   "The introduction of a "luminiferous ether" will prove
> > > >    to be superfluous inasmuch as the view here to be
> > > >    developed will not require an "absolutely stationary
> > > >    space" provided with special properties, nor assign a
> > > >    velocity-vector to a point of the empty space in which
> > > >    electromagnetic processes take place".
>
> > > > See:
>
> > > > ON THE ELECTRODYNAMICS OF MOVING BODIES
> > > > By A. Einstein
> > > > June 30, 1905
>
> > > >    It is known that Maxwell's electrodynamics--as usually
> > > >    understood at the present time--when applied to moving
> > > >    bodies, leads to asymmetries which do not appear to be
> > > >    inherent in the phenomena.
>
> > > >    Take, for example, the reciprocal electrodynamic action
> > > >    of a magnet and a conductor. The observable phenomenon
> > > >    here depends only on the relative motion of the conductor
> > > >    and the magnet, whereas the customary view draws a sharp
> > > >    distinction between the two cases in which either the one
> > > >    or the other of these bodies is in motion. For if the
> > > >    magnet is in motion and the conductor at rest, there
> > > >    arises in the neighbourhood of the magnet an electric
> > > >    field with a certain definite energy, producing a current
> > > >    at the places where parts of the conductor are situated.
>
> > > >    But if the magnet is stationary and the conductor in
> > > >    motion, no electric field arises in the neighbourhood of
> > > >    the magnet. In the conductor, however, we find an
> > > >    electromotive force, to which in itself there is no
> > > >    corresponding energy, but which gives rise--assuming
> > > >    equality of relative motion in the two cases
> > > >    discussed--to electric currents of the same path and
> > > >    intensity as those produced by the electric forces in the
> > > >    former case.
>
> > > >    Examples of this sort, together with the unsuccessful
> > > >    attempts to discover any motion of the earth relatively
> > > >    to the "light medium," suggest that the phenomena of
> > > >    electrodynamics as well as of mechanics possess no
> > > >    properties corresponding to the idea of absolute rest.
>
> > > >    They suggest rather that, as has already been shown to  (1)
> > > >    the first order of small quantities, the same laws of
> > > >    electrodynamics and optics will be valid for all frames
> > > >    of reference for which the equations of mechanics hold
> > > >    good. We will raise this conjecture (the purport of which
> > > >    will hereafter be called the ``Principle of Relativity'')
> > > >    to the status of a postulate,
>
> > > >    and also introduce another postulate, which is only     (2)
> > > >    apparently irreconcilable with the former, namely, that
> > > >    light is always propagated in empty space with a definite
> > > >    velocity c which is independent of the state of motion of
> > > >    the emitting body.
>
> > > >    These two postulates suffice for the attainment of a
> > > >    simple and consistent theory of the electrodynamics of
> > > >    moving bodies based on Maxwell's theory for stationary
> > > >    bodies.
>
> > > >    The introduction of a "luminiferous ether" will prove
> > > >    to be superfluous inasmuch as the view here to be
> > > >    developed will not require an "absolutely stationary
> > > >    space" provided with special properties, nor assign a
> > > >    velocity-vector to a point of the empty space in which
> > > >    electromagnetic processes take place.
>
> > > >    And, of course the paper goes on to develop the ideas
> > > >    and make his case...
>
> > > What part of 'inasmuch as the view here to be developed will not
> > > require an "absolutely stationary space"' are you not able to
> > > understand?
>
> > > 'Ether  and the Theory of Relativity by Albert Einstein'http://www-groups.dcs.st-and.ac.uk/~history/Extras/Einstein_ether.html
>
> > > "According to the general theory of relativity space without ether is
> > > unthinkable"
>
> > > Are you suggesting Einstein choose to believe in two ethers?
>
> > Yes, exactly. Read the later part of the second paper, where he
> > explains this:
> > "Recapitulating, we may say that according to the general theory of
> > relativity space is endowed with physical qualities; in this sense,
> > therefore, there exists an ether. According to the general theory of
> > relativity space without ether is unthinkable; for in such space there
> > not only would be no propagation of light, but also no possibility of
> > existence for standards of space and time (measuring-rods and clocks),
> > nor therefore any space-time intervals in the physical sense. But this
> > ether may not be thought of as endowed with the quality characteristic
> > of ponderable media, as consisting of parts which may be tracked
> > through time. The idea of motion may not be applied to it."
>
> > The luminiferous ether which was referred to in the first paper was
> > precisely that: endowed with qualities characteristic of ponderable
> > media, and whose motion could be tracked with time. That was the point
> > of the MMX, to measure the motion of the ether with respect to the
> > apparatus.
>
> > So yes indeed, Michael P. Cavedon, QA engineer for a software company,
> > Einstein was talking about two different kinds of ether, and his
> > latter paper aimed to make precisely this distinction. That
> > distinction could not be made any plainer.
>
> > Thank you for clearly laying out that you cannot read an article for
> > comprehension to save your life.
>
> > > Of course not. What you are doing is parsing the sentence you quoted
> > > in order to purposely misinterpret what Einstein said. Einstein is
> > > specifically referring to an absolutely stationary space as
> > > superfluous.
>
> > > "the state of the [ether] is at every place determined by connections
> > > with the matter and the state of the ether in neighbouring places ...
> > > disregarding the causes which condition its state".
>
> > > The state of the aether as determined by its connections with the
> > > matter and the state of the aether in neighboring places is the
> > > aether's state of displacement.
>
> > > The cause which conditions its state is its displacement by matter.- Hide quoted text -
>
> > > - Show quoted text -
>
> Effectively, the 'aether' of GR is simply a label for spacetime and
> its properties.  Spacetime isn't just a property-less dimensionless
> void, but rather is something that has particular spatial and temporal
> dimensions and a finite maximum 'speed' at which information can be
> propagated through it etc etc.

Aether = Dark matter.

'Ether and the Theory of Relativity by Albert Einstein'
http://www-groups.dcs.st-and.ac.uk/~history/Extras/Einstein_ether.html

"According to the general theory of relativity space without ether is
unthinkable"

Space without dark matter is unthinkable.

"the state of the [ether] is at every place determined by connections
with the matter and the state of the ether in neighbouring places".

The state of the aether as determined by its connections with the
matter and the state of the aether in neighboring places is the
aether's state of displacement.

Einstein was unable to determine the cause of the state of the aether:

" ... disregarding the causes which condition its state"

The cause which conditions its state is its displacement by matter.

(Aether/Dark Matter) and matter are different states of the same
material.
(Aether/Dark Matter) has mass.

'DOES THE INERTIA OF A BODY DEPEND UPON ITS ENERGY-CONTENT?'
A. EINSTEIN
http://www.fourmilab.ch/etexts/einstein/E_mc2/e_mc2.pdf

"If a body gives off the energy L in the form of radiation, its mass
diminishes by L/c2."

The mass of the body does diminish, but the matter which no longer
exists as part of the body has not vanished. It still exists, as
(aether/dark matter). As matter transitions to (aether/dark matter) it
expands in three dimensions. The effect this transition has on the
neighboring (aether/dark matter) and matter is energy.

'Dark Matter'
http://www.nasa.gov/multimedia/imagegallery/image_feature_827.html

"A hypothesis for the formation of the huge dark matter ring holds
that it is a transient feature formed when galaxy cluster CL0024+17
collided with another cluster of galaxies about one billion years ago,
leaving a ring similar to when a rock is thrown in a pond."

Dark matter displacement on a galaxy cluster scale.

'Scientists supersize quantum mechanics'
http://www.nature.com/news/2010/100317/full/news.2010.130.html

"Next, the researchers put the quantum circuit into a superposition of
'push' and 'don't push', and connected it to the paddle. Through a
series of careful measurements, they were able to show that the paddle
was both vibrating and not vibrating simultaneously."

The 'push' and 'don't push' cause the associated dark matter
displacement waves.

Dark matter displacement on the quantum scale.

"Large quantum states could tell researchers more about the
relationship between quantum mechanics and gravity — something that is
not well understood."

The relationship between quantum mechanics and gravity is dark matter
displacement.

The relationship is well understood in Dark Matter Displacement.