[ryan2006]

Spherical magnetic ball that is hollow on the inside. The hollow is filled with a liquid magnetic solution or the ball contains smaller magnetic ball, preferably an odd number of balls within the larger magnetic ball. Placed in zero gravity the magnetic forces turn the large ball while the solution moves creating heat that could be converted into electricity. On the otherhand if the smaller ball were placed in the hollow and it was placed in zero gravity it would need wire conductors penetrating the device to utilize the electromagnetic energy.

[alexander]

ok, i dont see a use for it... also there is almost no such thing as zero gravity, as any object that has a mass, creates their own

[ryan2006]

There is a huge use for this device on the hub of the international space station