A primary voltage drives an alternating current through the primary coil. The primary coil current produces a changing magnetic field. This magnetic field changes as the current changes.

Magnetic levitation has not quite revolutionized the world of transit the way some of us might have hoped. It has, however, proven useful to [mrdiytechmagic], who has put the technology to grand ...

The induced voltage produces an induced current ... For example, if a magnet is moved into a coil of wire, the induced magnetic field tends to repel the magnet back out of the coil.

But, there may be another way, albeit a rather special case, where a magnet can not only be levitated, but locked in place using a rotating magnetic field. The video shows a demonstration of how ...

Would a dramatic change in the Earth's magnetic field affect creatures that rely on it during migration? Late on a January night in 1993 I found myself on a beach on the Pacific coast of Costa ...

Researchers at the Institute of Automation of the Chinese Academy of Sciences have developed a compact, battery-powered brain ...