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Mainstream newspapers, popular magazines, technical journals, and declassified papers reported the existence of the gravity control propulsion research. For example, the title of the March 1956 Aero Digest article about the intensified interest was "Anti-gravity Booming." A. V. Cleaver made the following statement about the programs in his article:
Instead of being an anti-gravity force, what Brown observed has generally been attributed to electrohydrodynamics, [citation needed] the movement of charged particles that transfer their momentum to surrounding neutral particles in the air, also called "ionic drift" or "ionic wind". For most of Brown's life, he attempted to develop devices ...
Anti-gravity (also known as non-gravitational field) is the phenomenon of creating a place or object that is free from the force of gravity. It does not refer to either the lack of weight under gravity experienced in free fall or orbit , or to balancing the force of gravity with some other force, such as electromagnetism or aerodynamic lift .
Electrogravitics has become popular with UFO, anti-gravity, and government conspiracy theorists [5] where it is seen as an example of something much more exotic than electrokinetics, i.e. that electrogravitics is a true anti-gravity technology that can "create a force that depends upon an object’s mass, even as gravity does". [10]
There have been follow-ups on the claims that this force can be produced in a full vacuum, meaning it is an unknown anti-gravity force, and not just the more well known ion wind. As part of a study in 1990, U.S. Air Force researcher R. L. Talley conducted a test on a Biefeld–Brown-style capacitor to replicate the effect in a vacuum. [12]
Wu's theory approximated the relative gravity loss as 0.03% (an order of magnitude smaller than the reported range of 0.3–0.5%). [ citation needed ] C. S. Unnikrishan, Tata Institute of Fundamental Research , Mumbai, showed that if the effect had been caused by gravitational shielding, the shape of the shielded region would be similar to a ...
American experimenter Thomas Townsend Brown spent much of his life working on the principle, under the mistaken impression that it was an anti-gravity effect, which he named the Biefeld–Brown effect. Since his devices produced thrust in the direction of the field gradient, regardless of the direction of gravity, and did not work in a vacuum ...
She claimed that an anti-gravity effect could be produced by rotating ions creating a gravitomagnetic field perpendicular to their spin axis. In her theory, if a large number of ions could be aligned, (in a Bose–Einstein condensate ) the resulting effect would be a very strong gravitomagnetic field producing a strong repulsive force.