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| ZP OWER C ORPORATION PAGE OF 352 Z ERO P OINT E NERGY superfluid properties) is the significant difference between Newtonian gravity and General Relativity. General Relativity is a relativistic theory of gravity. The first postulate of General Relativity is that the source of the gravitational field is the stress- energy tensor of a perfect fluid, T sections 4.6 & 4.7, A first course in general relativity, Schutz}. This "stress-energy tensor" contains four nonzero components. These four components are the density of the perfect fluid and the pressure of the perfect fluid in each of the three physical axes. A perfect fluid in general relativity is defined as a fluid that has no viscosity and no heat conduction. It is a generalization of the "ideal gas" of ordinary thermodynamics. Newtonian gravity is regarded as the result of a force. General Relativity distinguishes gravity from all other forces because "all bodies given the same initial velocity follow the same trajectory in a gravitational field, regardless of their internal composition" ibid, p. Specifically, attempting to define a primal reference frame is considered "vacuous, since no free particle could possibly be a physical 'marker' for it" ibid, p. This second postulate became the Equivalence Principle Uniform gravitational fields are equivalent to frames that accelerate uniformly relative to inertial frames. Although it is often stated that General Relativity shows that mass curves space, what GR actually states is that a curved spacetime represents the effects of gravity. The distinction is critical. All GR really requires is that free particles (and photons) act as if space were curved in some manner. All this means is that their trajectories curve in the presence of a massive object ibid, p. The same argument could be made for Coriolis forces. If we examine the coriolis forces that affect trajectories of moving objects over the surface of a rotating planet, we could reach the same results by postulating that Latitude "curves" space. The results of our calculations would be identical to those based on the physical cause. But we would not gain any knowledge of the cause, because we would not be looking for one. In the direct application of its basic postulate, General Relativity suffers from the same basic weakness as the Newtonian quantification of gravity. No basis is given in General Relativity for how mass "curves" space, why masses follow the "shortest" path through curved space, or why the principle of equivalence exists. This is "action at a distance" reformulated. Einstein himself noted this weakness in that matter had to be added into the equations "by hand" The Reluctant Father of Black Holes, Scientific American, June 1996, p. |