sciencehabit (1205606) writes "It's textbook physics: An electric charge near the surface of a material gets pulled toward the surface. However, if the charge is spread out into the right shape and moves fast enough, that attraction becomes a repulsion, one physicist calculates. The odd finding could help physicists avoid unexpected effects when guiding beams of particles such as electrons." Link to Original Source
"Anyone attempting to generate random numbers by deterministic means is, of
course, living in a state of sin."
-- John Von Neumann