As sunspots emerge on the sun's surface close to its equator, their orientations will match the old magnetic field, while ...

Your navigation system just got a critical update, one that happens periodically because Earth’s magnetic north pole keeps moving. Here’s what to know.

These churning metals act like a massive generator called the 'geodynamo,' creating electric currents that produce the magnetic field. But this motion isn't constant. It fluctuates over time ...

One of two coil panels to control the magnetic field. This magnetic field generator is capable of creating a uniform field based on input from a sensor. Using the sensor to detect ambient fields, its ...

How a Generator Works When an electric current flows through a wire, it generates a three-dimensional magnetic force field around the wire, similar to that surrounding a bar magnet. Magnets are ...

Slip rings maintain constant contact with the same sides of the coil As one side of the coil moves up through the magnetic field, a potential difference is induced (created) in one direction.

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 ...

Cai Shuhui from the Institute of Geology and Geophysics (IGG) under the Chinese Academy of Sciences, also first author of the paper, said that the Earth has a "magnetic field generator"—the ...

A solution proposed by a team of scientists at the North Carolina State University is a metamaterial that can change shape in response to magnetic fields. This material had to be easily deformable ...

The movement of conducting fluid in the liquid's outer core inside a planet acts like a generator to produce a magnetic field. "The Moon also once had a magnetic field generator similar to the ...