If you made a motor out of a magnet, a wire coil, and some needles, you probably remember that motors and generators depend on a rotating magnetic field. Once you know how it works, the concept is ...

In this detailed video, we break down the working principles of one of the most widely used electric motors in industrial ...

Just like a permanent-magnet motor, the energized windings create an electromagnetic field that interacts with the stator's rotating magnetic field, spinning the rotor. Synchronous motors have the ...

As the rotor spins along with the rotating magnetic field, torque is produced. More torque is produced when the saliency ratio, or difference in magnetism between materials (in this case, the ...

An asynchronous or induction motor's rotor rotates at a somewhat slower speed than the stator field. The stator's magnetic field is therefore changing or rotating relative to the rotor. The AC ...

To make an electric transformer, copper wire is often wound around a magnetic metal like iron, a setup that helps concentrate a magnetic field. (Image credit: FactoryTh via Getty Images) ...

First, propulsion via a rotating magnetic field is ten times more powerful than propulsion via a static magnetic field. The latter merely sets the direction and the bacteria have to move under ...

Recently, a team of scientists and engineers at Rice University discovered a similar phenomenon on a microscopic scale, where tiny magnetic particles driven by rotating fields spontaneously move ...