The iron core increases the coil’s magnetic field strength. A simple electromagnet is made by coiling wire around an iron nail. An iron core makes a temporary electromagnet. It loses its ...

In 1862, James Clerk Maxwell published his famous Maxwell’s equations. This was at a time when humans were just starting to ...

When an electric current passes through a metal wire, a magnetic field forms around that wire (see diagram at right). Likewise, a wire passing through a magnetic field creates an electric current ...

Researchers say they may have achieved Einstein's vision of a "unified field theory" that can unite two of nature's ...

Researchers at Osaka University have revealed a link between the equations describing strain caused by atomic dislocations in ...

But before you start dreaming of free, near-limitless energy ... setting up a static electric field that opposed Earth’s magnetic field. The electric and magnetic forces would rapidly establish ...