There may be several ways to theoretically dispute the validity of dipole gravity.
1. There is no mass increase effect due to special relativity.
2. There is no ideal solid object in relativity theory.
3. Hemisphere may deform while in rotation so that it may cancel the shift of the relativistic center of mass.
4. Relativistic shift of the center of mass has nothing to do with the dipole gravitational moment in general relativity.
5. There may be dipole gravity effect but the spherical shape of the source will completely cancel the effect.
6. Ehrenfest paradox negates the effect of the relativistic center of mass shift.
The statement number 1 is a false. The special relativistic mass increase effect has been observed and confirmed. The statement number 2 has been discussed in the paper "Non Newtonian force...." In fact, the question of the rigidity must be considered a relative one. Depending on the binding force of the dense stellar object, the degree of rigidity will vary. The statement number 3 can be disputed by the fact that, in general, the longitudinal asymmetry is all it needs to have a shift in the center of mass of a rotating object, so the deformation itself doesn't affect the fact that it will have a shift of the center of mass. The statements number 4 and 5 can be disputed by the fact that dipole gravity reproduced the exact form of the Lense-Thirring force at the center of the rotating spherical shell.
Now regarding the statement number 6, some readers of the dipole gravity article objected to the notion that there is a relativistic center of mass shift for a rotating hemispherical rotor by invoking Ehrenfest's paradox, which states that due to the length contraction effect of special relativity, the circumference of a rotating ring will be shorter than given by 2piR(the length of the radius will still be the same).
So the mass of the rotating ring should be the same regardless of the speed of the rotation according to their objection.
However, if we assume that the ring is made up of N number of atoms connected in series, each atoms will experience the special relativistic mass increase effect, and since the number of the atoms can not change due to the rotational motion, the relativistic mass increase effect for the whole ring(as well as for the whole hemisphere) should still be effective.
The next objection is from the simple comparison with the electromagnetic phenomenon. The electricity and magnetism has electric and magnetic dipole moment because there are two different charges in the theory of electromagnetism, ie, positive and negative charges of electricity and north and south poles of magnetism, but there is no negative mass in gravity so how can you have gravitational dipole moment?
While gravity and electromagnetism are both long range forces, they are fundamentally different forces of nature. In fact, the fact that there is no observed negative mass in the universe has contributed greatly to the notion that there should be no gravitational dipole moment in the physical world. However, general relativity in the linearized form only requires a physically meaningful shift(not the kind that can be eliminated by a coordinate translation) of the center of mass, not the presence of a negative mass for the existence of a gravitational dipole moment.
The question on why this shift implicated in the linearized theory of general relativity should be identified with the relativistic shift of the center of mass of a rotating longitudinally asymmetric object may be entirely a matter of faith. There is no reason it should be identified as such. But then there is also no reason it should not. At least it confirmed the result calculated by a different method of analytic integration performed by Lense-Thirring.
As in the Dirac's equation of the relativistic theory of positrons, a mathematical equation can be interpreted by predicting a certain new physical reality.
The entire justification of such an interpretation totally remains in its predictive power of the physical nature.
So the last resort to falsify dipole gravity remains in the test of its fundamental predictions since all the features of the dipole gravity potential have been consistent with the observed cosmological data.
Newtonian gravity started from the conceptual extension of the force that was observed from a falling apple(the real story behind will be much more complicated and deeper than can be described by such a simple story), the same force is exerted in the planetary system as well as in our daily lives. It seems clear that the massive cosmological phenomena like the jets and the dark matter problems should have a similar counter part in our daily lives so that we can observe it. Since dipole gravity is the second order effect from general relativity, its strength should be much weaker than Newtonian gravity and as such its effect will be much harder to detect in the terrestrial environment. But it is certainly within our current technological reach to test it as shown in the previous pages.
What if the test disproves the prediction?
I think it is possible, but it will ultimately mean a disproof of general relativity.
Thursday, December 27, 2007
There may be several ways to theoretically dispute the validity of dipole gravity.
Tuesday, December 25, 2007
The theoretical explanation of the mysteries in cosmology may be the least exciting part of the consequences of dipole gravity. Apart from the obvious engineering difficulties associated with finding materials that can withstand the enormous centrifugal force that can tear up the whole structure of the rotor, dipole gravity is a practical and efficient method of propulsion in space travel.
Once a certain level of rotational speed of the dipole rotor is reached, it will start propelling the ship with an ever increasing speed without any additional expenditure of energy according to the theory of dipole gravity. The ship travels in space like falling down a constant gravity field except that there is no fixed source of a gravity center. The ship propelled by dipole gravity will travel the space like sliding down hill as it creates its own slope of the hills which depends on the rotational frequency of the dipole gravity rotor.
In theory, there is no limit of the speed of travel in this propulsion method.
What happened to special relativity that limits the speed of travel to the speed of light?
Special relativity applies when there is no curvature in space time, meaning when there is no gravity field. In terms of the tachyonic world picture, it means in the region where the density of the tachyonic neutrinos are uniform. Motion in space in this mode is like that of running against the blowing wind, not with the wind. The atomic nuclei of the material in motion in this mode suffers dislocation and huge resistance due to the enormous collision with the tachyonic particles. This is the main cause of the increase of energy(mass) as the object travels faster and faster in space by Newton's third law of motion. Any living organisms will not be able to withstand the stress without getting destroyed. The integrity of the structure of the material is not supported in this mode of travel as the speed gets close to the speed of light.
However, in the mode of the dipole gravity propulsion, the ship is enveloped inside the tachyonic aether's clothing. The ship is naturally following the density gradient of the spacetime curvature itself. In other words, the front side of the space of the dipole gravity propulsion device is an artificially created aether vacuum while the back side of it is a compressed aether space.
Alcubierre devised a metric that resembles this configuration in spacetime.
So, in the dipole gravity propulsion scheme, the imbalance of the surrounding tachyonic aether pressure is the one responsible for the acceleration of the ship itself. So the nuclei of the material inside the aether gradient doesn't suffer the massive pressure against the tachyonic neutrinos. The ship is traveling fast, even faster than the speed of light, but there is no increased aetheric pressure associated with it and thereby the structural and biological integrity of the ship is preserved.
After all, the black hole is a blob of space where tachyonic neutrinos can not penetrate. In a sense, it is a gigantic localized aether vacuum where all the material objects close to it are bound to fall into.
It's no suprise that the extreme relativistic extension of dipole gravity becomes a one way transversabe worm hole while that of Newtonian(monopole) gravity a black hole.