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 ...

But, there may be another way, albeit a rather special case, where a magnet can not only be levitated, but locked in place using a rotating magnetic field. The video shows a demonstration of how ...

Harnessing the immense power of nuclear fusion has long been a scientific challenge. While traditional fusion reactors use ...

They sense weak magnetic fields via gaseous forms of alkali metals, such as rubidium or caesium. Within the devices these atoms behave like tiny magnets and are aligned with a beam of laser light ...

The electric current, in turn, creates its own magnetic field—one that is stronger than the field that created it in the first place. As liquid metal passes through the stronger field ...

Iron particles effectively act as tiny magnets that can record both magnetic field strength and direction when the process of crystallization locks them in place. The researchers found that rocks ...