India has a $800m plan to make rare earth magnets, aiming to reduce dependence on Chinese imports - but can it work?
Georgetown University researchers have discovered a new class of strong magnets that do not rely on rare-earth or precious ...
Cutting a bar magnet in half won't get rid of its poles. It'll just produce two magnets, each with a north pole that will be attracted to the other magnet's south pole, and vice versa. It's this ...