1. The problem statement, all variables and given/known data i was looking at an article on wikipedia on the biefeld brown effect http://en.wikipedia.org/wiki/Biefeld–Brown_effect and i could not understand why there's some form of repulsion between the two electrodes, thought the are oppositely charged and at insanely high voltages 2. Relevant equations 3. The attempt at a solution arent oppositely charged objects supposed to attract? and what does the statement " . . . This produces an equally scaled opposing force in the lower electrode ...." in the article mean? does it mean that when the now positively charged particles are attracted by a force in the direction of the negative electrode, there is an equal and opposite reaction on the positive electrode?