Magnets and superconductors go together like oil and water—or so scientists have thought. But a new finding by MIT physicists ...

When an electric current passes through a metal wire, a magnetic ... the stronger field, more current flows, which increases the field still further. This self-sustaining loop is known as the ...

But these excitons also exhibit unusual magnetic properties. At temperatures less than 132 Kelvin (-222 degrees F or -141 degrees C), the material's layers are magnetized and the electrons are aligned ...

When an electric current flows, the shape of the magnetic ... magnetic field. Figure caption, A solenoid, shown here in cross section, has a stronger electromagnetic field than a single straight ...

A magnetic field is invisible, but it can be detected using a magnetic compass. A compass contains a small bar magnet on a pivot so that it can rotate. The compass needle points in the direction ...