General relativity is an outgrowth of special relativity and embodies some of
the same assumptions, such as the constancy of the speed of light.
Because electromagnetic signals are used to measure distances and times one
could say that the curvature of space-time, or change in the metric, is a
consequence of the need to maintain the constancy of the speed of light.
However, once one frees oneself from the straight jacket of requiring the
constancy of the speed of light a lot of new options open up. Then it makes
more sense to assume that the metric is constant and the speed of light
changes, the effect is the same.
For example, the bending of light by gravity could be explained by assuming
that the aether increases in density as one nears the surface of a planetary
body. Light would then be bent or refracted in a similar way as when it passes
through matter of varying density.
Also, one would expect that the atomic processes of clocks might run slower in
a denser aether, giving rise to the time dilation that we observe in a
Tom Van Flandern has shown that the above effects ascribed to general
relativity could be explained by an underlying medium whose density increases
linearly with the closeness to the gravitational body
The above 4D wave model gives us a possible mechanism by which the density of
the aether would be increased near a planetary body.
One might expect that the drift of the nodal points towards the surface of a
planet will create a small but definite pressure on the underlying aether. A
pressure that would increase as one moved closer to the planetary surface,
giving rise to an increasing aether density.
Tom Van Flandern has also presented a convincing argument, based on
experimental observation, suggesting that the speed of gravity is much greater
than the speed of light
. The assumption that gravity is propagated at the speed of light
leads to predictions that are in stark disagreement with observation.
The notion that gravity propagates faster than the speed of light is also
supported by experiments carried out by Eugene Podkletnov and
They used a high voltage discharge mechanism to generate what they refer to as
a gravity wave impulse
. This impulse was found to travel through thick metal and brick
walls, and was able to affect objects a long distance away from the source.
More importantly, they measured the beam speed to be more than 60 times the
speed of light.
We must therefore allow the possibility that the 4D waves we have been
describing can travel much faster than the speed of light.
This also implies that gravity cannot be explained as a residual effect of
electromagnetic interactions as some have proposed, because
electromagnetic forces are limited to the speed of light.