Biefeld-Brown effect basically debunked:
"Brown believed that his large, high voltage, high capacity capacitors produced an electric field strong enough to marginally interacted with the Earth's gravitational pull, a phenomenon he labeled electrogravitics. Several researchers claim that conventional physics cannot adequately explain the phenomenon.[16] The effect has become something of a cause célèbre in the UFO community, where it is seen as an example of something much more exotic than electrokinetics. Charles Berlitz devoted an entire chapter of his book The Philadelphia Experiment to a retelling of Brown's early work with the effect, implying he had discovered a new electrogravity effect and that it was being used by UFOs. Today, the Internet is filled with sites devoted to this interpretation of the effect.
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.[8] Despite attempts that increased the driving DC voltage to about 19 kV in vacuum chambers up to 10−6 torr, Talley observed no thrust in terms of static DC potential applied to the electrodes.[17] In 2003, NASA scientist Jonathan Campbell tested a lifter in a vacuum at 10−7 torr with a voltage of up to 50 kV, only to observe no movement from the lifter. Campbell pointed out to a Wired magazine reporter that creating a true vacuum similar to space for the test requires tens of thousands of dollars in equipment.[8]
Around the same time in 2003, researchers from the Army Research Laboratory (ARL) tested the Biefeld–Brown effect by building four different-sized asymmetric capacitors based on simple designs found on the Internet and then applying a high voltage of around 30 kV to them. According to their report, the researchers claimed that the effects of ion wind was at least three orders of magnitude too small to account for the observed force on the asymmetric capacitor in the air. Instead, they proposed that the Biefeld–Brown effect may be better explained using ion drift instead of ion wind due to how the former involves collisions instead of ballistic trajectories.[1] Around ten years later, researchers from the Technical University of Liberec conducted experiments on the Biefeld–Brown effect that supported ARL's claim that assigned ion drift as the most likely source of the generated force.[18]
In 2004, Martin Tajmar published a paper that also failed to replicate Brown's work and suggested that Brown may have instead observed the effects of a corona wind triggered by insufficient outgassing of the electrode assembly in the vacuum chamber and therefore misinterpreted the corona wind effects as a possible connection between gravitation and electromagnetism.[2]"
https://en.wikipedia.org/wiki/Biefeld%E2%80%93Brown_effect
Show Posts