Controlling magnetism in a device is not easy; unusually large magnetic fields or lots of electricity are needed, which are ...

Beyond current technologies such as hard disk drive read heads and magnetic random-access memory ... materials with significant magnetoresistance effects but also control over their magnetoelastic ...

As with all currents, the induced current creates a magnetic field around itself. Note that this magnetic field opposes the original change. For example, if a magnet is moved into a coil of wire ...

Creatures from migratory eels and other fish species to insects to birds tap into the Earth’s magnetic field to navigate ... “It’s extremely carefully controlled,” notes Warrant, as the authors ...

To investigate, describe and recall how the strength of the magnetic field depends on the current in the coil, the number of turns in the coil and the material used as the core of the coil.

American researchers have measured a tiny electrical voltage by exploiting Earth's magnetic field in the planet's rotational motion. This discovery, though modest, revives a scientific debate ...