An AC electromagnet levitates aluminum rings under sustained current and causes them to "jump" when a large current is suddenly introduced. The physical properties of the ring, largely the electrical ...

The device sure looks like an electromagnet made with magnet wire and a steel core. But when he shows the ends of the core, you’ll see that the side that attracts aluminum has a copper ring ...

A crystal oscillator pulses a relatively large electromagnet. A small plastic gear has a magnetic ring and sits near the electromagnet. Each time the polarity of the electromagnet flips ...

This new type of electromagnet has many benefits ... Magnets like Fusillo are expected to be in use in the new storage ring for HIE-ISOLDE within about five years and might then be developed ...