After the invention of the induction motor, alternating current (AC ... It's this magnetic attraction and repulsion that causes the rotor to rotate. The greatest advantage of DC motors may be speed ...

Launching things with electromagnetism is pretty fun, with linear induction motors being a popular design ... they use magnetic attraction and repulsion to create a linear motion on the propulsive ...

Those are motors that run on high voltage, and the attraction and repulsion of charge ... from the earliest ion propelled ones to the induction motors which most have never heard of before ...