Experimental Test of the Biefeld-Brown Effect 

The system shown below involved a non-conducting balance beam on which flat large area capacitors were placed, with high voltage being applied to one of the capacitors via very thin wires.  This was done in a manner that did not appreciably affect  the operation of the balance beam.  The camera shown to the right of the device allowed remote observation of the balance beam's movement.  When 25 kilovolts was applied to the capacitor shown to the left, the capacitor, on the average, translated in the direction of its positive plate about two centimeters-- corresponding to a change in effective mass of 10 milligrams.  This is in agreement with the observations of Biefeld and Brown.  There was no evidence of any kind of ion wind or other effect.  And it is worth noting that the Biefeld-Brown effect was tested by Brown in vacuum.  That would eliminate ion wind as a possibility.  

-- R. Koontz (Bio)

Links

Townsend Brown, "The Wizard of Electro-gravity"  Link
The Scientific Notebooks of Thomas Townsend Brown  Volume 1, 2, 3, 4