http://www.pbs.org/wgbh/nova/next/space/improbable-thruster-seems-work-violating-known-laws-physics/
also being discussed here
http://www.overunity.com/14818/nasa-reports-simple-thruster-violates-known-laws-of-physics/msg412447/#new
and here
http://www.energeticforum.com/renewable-energy/19653-improbable-thruster-seems-work-violating-known-laws-physics.html#post262157
thx
Chet
Thanks, Chet - very intriguing. Like to see the NASA boys scratching their heads...
QuoteThe NASA team, using a torsion pendulum, or a device that can measure minute forces, found that Fetta's drive created 30-50 micronewtons' worth of thrust. That's not a lot of force—even one whole Newton is less than the weight you feel in your hand when you hold an iPhone—but according to the laws of classical physics, Fetta's device shouldn't have produced any at all.
Fetta, an independent inventor with a background in chemical engineering, explains that the drive is a "superconducting resonating cavity." According to him, the cavity is designed with little wells along the bottom edge to trap electrons, so that when electromagnetic waves bounce around inside the cavity, more electrons push up on the top surface of the cavity than push down on the bottom. This imbalance, Fetta says, creates upward thrust.
--PBS