Shadowprophet
Truthiness
I don't know where the strange ideas, like the field changing the mass are coming from, so hopefully this will clear some things up. First of all, look at my avatar. It defines mass in such a way that it is an invariant. (That doesn't mean that you can't make something like sci fi inertial dampeners) Second of all, The solution implications discussed are not an anti gravity effect even if one can levitate something by the effect alone. Its not about changing the gravitational mass, nor about pushing against gravitational sources which are what anti gravity refers to. The solution indicates that the electric field's own stress energy tensor yields a solution to Einstein's field equations that has gravitational field lines, in the over simplified Newtonian sense as best I can explain it, following along them. As such, the electric field itself can be used to produce a gravitational field which the matter of such a thing as a lifter will tend to follow. The electric field between the wire and the plate of a lifter is on average between them near the electrical breakdown of air about 3 million V/m. However, electric fields near charged conductors such as the wire and the plate tends to be insanely high near tight curves and sharp edges or points like the edge of the foil or near the wire making the electric field near these many orders of magnitude higher than the 3 million V/m average between them. As such the electric field itself can produce significant gravitational effects in the immediate vicinity of the wire and plate edges.
That being said, as was mentioned in the video, if the lifter has a biased gravitational effect, it is still NOT an anti gravity effect, as the bias in the direction of the gravitational field about the lifter would exist even in the depths of space remote from any other gravitational sources.
ANYWAY, since I mentioned inertial dampening just consider for example a matter shell outside of which the metric you write down in Rindler coordinates, but inside you write down as inertial frame coordinates for flat spacetime. You then write down for the metric in the matter transition a metric which reduces to each in its values and first derivatives at both the inner and outer boundaries. You then take that metric and calculate from it the Einstein tensor and from that determine what stress energy tensor corresponds to the matter shell to produce that entire spacetime. What you find ultimately is that you need a pressure dipole which physically can be done because negative pressure states do turn out to exist in nature. For examples, dark energy, Casimir energy, even the pressure component of a simple electric field along its direction.
I only ask, does the fact that Antimatter exists really need illustrating? Negatively charged matter does occur naturally,
I also believe Antigravity is a pipedream that simply does not occur in nature and therefore can not occur technologically. We can defy gravity in many ways, But we can not simply achieve Antigravity. It's not possible in the sense people wish for it to be and it defies GR completely. If antigravity were possible, Nature would illustrate this in the form of white holes.
Under the laws of physics that we currently understand, quantities like anti-mass or anti-energy don't exist.
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