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Biefeld-Brown effect

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The Biefeld-Brown effect is an electrokinetic effect that was discovered by Thomas Townsend Brown (USA) and Dr. Paul Alfred Biefeld[?] (CH). The effect is more widely referred to as electro-hydrodynamics (EHD) or sometimes electro-fluid-dynamics, a counterpart to the well-known magneto-hydrodynamics[?].

The effect relies on corona discharge[?], which allows atoms to become ionized very easily near sharp points and edges – this is why lightning rods are pointy. In this case two electrodes are used with a high voltage between then, about 20kV, where one electrode is small or sharp, and the other larger and smoother. This creates a high field gradient around the smaller, positively charged electrode. Around this electrode, electrons are stripped off the atoms in the surrounding medium, they are literally pulled right off by the electrode's charge. The electrons quickly move to the electrode, and are driven to the negative electrode by the voltage.

This leaves a cloud of positively charged ions in the medium, which are attracted to the negative electrode. This also drags along some of the surrounding medium, causing what is known as ion wind, which creates a breeze of considerably greater magnitude than the ions themselves account for. This effect can be used for propulsion and fluid pumps.

The effect has become something of a cause celebre in the UFO world, where it is seen as an example of something much more exotic than electrokinetics. Charles Berlitz[?] devoted an entire chapter of this book The Philadelphia Experiment to a retelling of Brown's early work with the effect, implying he had discovered some new electrogravity effect being used by UFOs. In fact Brown was fully aware of how the device worked, but that makes for a less interesting story. Today the internet is filled with sites devoted to this interpretation of the effect.

T. T. Brown issued a number of patents on his discovery:

  • GB300311 (http://l2.espacenet.com/espacenet/bnsviewer?CY=ep&LG=en&DB=EPD&PN=GB300311&ID=GB++++300311A++I+) - A method of and an apparatus or machine for producing force or motion (accepted 1928-11-15)
  • US1974483 (http://l2.espacenet.com/espacenet/bnsviewer?CY=ep&LG=en&DB=EPD&PN=US1974483&ID=US+++1974483A1+I+) - Electrostatic motor (1934-09-25)
  • US2949550 (http://l2.espacenet.com/espacenet/bnsviewer?CY=ep&LG=en&DB=EPD&PN=US2949550&ID=US+++2949550A1+I+) - Electrokinetic apparatus (1960-08-16)
  • US3018394 (http://l2.espacenet.com/espacenet/bnsviewer?CY=ep&LG=en&DB=EPD&PN=US3018394&ID=US+++3018394A1+I+) - Electrokinetic transducer (1962-01-23)
  • US3022430 (http://l2.espacenet.com/espacenet/bnsviewer?CY=ep&LG=en&DB=EPD&PN=US3022430&ID=US+++3022430A1+I+) - Electrokinetic generator (1962-02-20)
  • US3187206 (http://l2.espacenet.com/espacenet/bnsviewer?CY=ep&LG=en&DB=EPD&PN=US3187206&ID=US+++3187206A1+I+) - Electrokinetic apparatus (1965-06-01)
  • US3196296 (http://l2.espacenet.com/espacenet/bnsviewer?CY=ep&LG=en&DB=EPD&PN=US3196296&ID=US+++3196296A1+I+) - Electric generator (1965-07-20)

More recently small models powered by high-voltage transformers have made a sudden comeback, generally referred to as lifters. Lifters usually have a triangular shape or are built of many triangular submodules, typically with a side length between 15cm and 1m. The smaller electrode usually consists of a thin copper wire (diameter ~ 0.1mm) and the larger electrode is built using aluminium foil. The supporting frame (not shown above) is made of a light material such as Balsa wood or straw blades.

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