Biefeld-Brown Effect
The Biefeld-Brown effect is a physical effect discovered by Thomas Townsend Brown in the 1920s , which manifests itself as a pushing force in the direction of the smaller plate of an asymmetrical capacitor charged with high voltage . It is also named after Paul Alfred Biefeld , a professor at Denison University in Granville, Ohio , with whom Brown was a laboratory assistant and worked together on capacitors. The original publications on the effect were exclusively Brown patents (patents granted in 1928 and 1960, 1962, 1965). According to Brown, the effect is greatest when the smaller electrode is positively charged. Brown suggested using it for pumps or moving vehicles.
The Biefeld-Brown effect is most likely generated by ions accelerated in the field of the electrodes. On the smaller plate of the capacitor, molecules of the surrounding medium are ionized due to the high electric field strength there and accelerated in the direction of the larger plate. In doing so, they pull further, non-ionized molecules with them via collision processes and thus generate a net thrust that pushes the capacitor in the direction of the smaller plate. Theories on this are based on plasma physics .
A Biefeld-Brown effect in a vacuum , which was often claimed (also by TT Brown), has not yet been proven by serious experiments . Furthermore, it is often claimed, especially from pseudoscientific sources, that the effect is due to electrogravity , a still unknown coupling of the electromagnetic field to gravity . This is rejected by natural scientists : On the one hand, experiments with lifters , small flying devices whose propulsion principle is probably based on the Biefeld-Brown effect, show that the strength of the thrust does not depend on the position and orientation of the device in space and, in particular, with respect to the earth excludes a gravitational effect. On the other hand, the effect can be explained in the context of normal physics.
A torsion balance can be used for simple verification , at the end of which an asymmetrically constructed capacitor is attached, which is connected to a high-voltage source for direct current .
literature
- Martin Tajmar : Biefeld – Brown Effect - Misinterpretation of Corona Wind Phenomena . In: American Institute of Aeronautics and Astronautics Journal . tape 42 , no. 2 , February 2004, p. 315–318 (English, tu-dresden.de [PDF; 163 kB ]).
- Force on an Asymmetric Capacitor by Thomas B. Bahder. Chris Fazi , Technical Report, Army Research Laboratory, March 2003, (PDF file; 1.04 MB)
Web links
- corona glow, electric wind, history, theory and applications . membres.lycos.fr. Retrieved June 25, 2009.
- Blaze Research Labs - Introduction in EHD thrusters and the lifter, and in vacuum experiments (English)
Individual evidence
- ↑ Thomas Bahder, Chris Fazi, Force on an Asymmetric Capacitor , Technical Report, Army Research Laboratory, 2003, p. 2
- ↑ The Biefeld-Brown Effect . www.borderlands.de. September 21, 2000. Retrieved June 25, 2009.
- ↑ https://www.heise.de/newsticker/meldung/2-x-2-Zentimeter-Die-kleinste-Drohne-der-Welt-mit-EHD-Triebwerken-4300149.html?wt_mc=rss.ho.beitrag .atom