Thomas Townsend Brown, American physicist and engineer (died 1985)

Thomas Townsend Brown was an American inventor whose research into odd electrical effects led him to believe he had discovered a type of anti-gravity caused by strong electric fields. Instead of being an anti-gravity force, what Brown observed has generally been attributed to electrohydrodynamics, the movement of charged particles that transfer their momentum to surrounding neutral particles in the air, also called "ionic drift" or "ionic wind". For most of Brown's life, he attempted to develop devices based on his ideas, trying to promote them for use by industry and the military. The phenomena came to be called the "Biefeld–Brown effect" and "electrogravitics".