you may be familiar with the magnetic loop antenna. It’s different from most conventional wire antennas, taking the form of a tuned circuit with a very large single-turn coil and a tuning capacitor.

The idea of a loop antenna is simple enough. It’s an inductor intended to respond to the magnetic portion of the wave rather than the electric part. They’re normally made of a single turn of ...

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 ...

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 ...

RF SQUID: An RF SQUID has a single Josephson junction in a superconducting loop, coupled to a radio-frequency (RF) circuit. The external magnetic field modulates the inductance of the loop, which is ...

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 ...

How it works Artist’s impression of how an ultrafast disruption of superconductivity in a YBCO thin film triggers an abrupt magnetic field quench, setting off dynamics in a neighbouring magnetic ...