A coil with an iron core is called an electromagnet. 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 ...

As sunspots emerge on the sun's surface close to its equator, their orientations will match the old magnetic field, while sunspots forming closer to the poles will have a magnetic field matching the ...

In fact, the discovery actually supports a key part of the theory about how chorus waves work. Using data from the ...

Some of the most sensitive methods of measuring magnetic fields use interactions of resonant light with atomic vapour. Recent developments in this vibrant field have led to improvements in ...

Understanding the Mystique of Magnetic Pole Shifts Magnetic pole shifts, a subject shrouded in both fascination and fear, ...

While technically not an electromagnet, it is possible to build ... The coil is fed with AC. The magnetic field from the coil induces an opposite field in the copper ring that is out of phase ...

ESA's Swarm mission, utilizing the faint magnetic signals generated by Earth's ocean tides, offers groundbreaking insights into undersea magma distribution and potential changes in global ocean ...

Multiferroic materials, in which electric and magnetic properties are combined in promising ways, will be the heart of new ...

This can happen because the electric and magnetic fields of the radiation in chorus waves rotate mainly in a clockwise direction and the electrons spiral around Earth’s magnetic field in the ...

Russia's State Atomic Energy Corporation, Rosatom, recently developed a new spacecraft engine with impressive specifications.

Multiferroic materials, in which electric and magnetic properties are combined in promising ways, will be the heart of new ...