This means that their magnetism is there all the time and cannot be turned on or off as it can with an electromagnet. Converting a magnet to a non-magnet is called demagnetisation. Magnets are ...

It shows how iron filings reveal the magnetic field around a magnet, how charged objects create electric fields that can attract materials, and how gravity creates a gravitational field that pulls ...

Physicists Prof. Dr. Ingo Rehberg from the University of Bayreuth and Dr. Peter Blümler from Johannes Gutenberg University ...

The magnetic field around a circular loop of wire is similar to that of a bar magnet. When an electric current flows through the loop, it generates a magnetic field. Inside the loop, the magnetic ...

Cutting a bar magnet in half won't get rid of its poles ... Scientists discover strong, unexpected link between Earth's magnetic field and oxygen levels Why isn’t an atom’s nucleus round?

That magnet is strong, representing roughly 75 percent of the intensity of Earth's magnetic field at the surface. Of course, a bar magnet is not a perfect representation — it's actually electric ...

The updated version of the World Magnetic Model was released on Dec. 17, with a new prediction of how the magnetic north pole ...

Given the importance of this gargantuan bar magnet in our day-to-day lives, it’s worth understanding how it works — and when it doesn’t. Since the magnetic field is sustained by geological activity ...

The deflection angle of the needle is noted for varying distances of the magnet, and with some quick math the local field strength of the Earth’s magnetic field can be calculated based on the ...