Magnet placed under container of ferro fluid and AC coil
http://www.rmcybe rnetics.com/projects /experiments/ferrofl uid_magnetorheologic al_fluids.htm
The erratic arcs on the tesla coil dissapear to produce a single smooth flowing arc.
http://www.rmcybe rnetics.com/projects /experiments/experim ents_tesla_coils.htm
propulsion without moving parts. Uses High voltage DC to push against the air to produce thrust.
http://www.rmcybe rnetics.com/projects /DIY_Devices/homemad e_electrohydrodynami c_thruster_ehdt.htm