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 ...

There is a simple way to levitate magnets – and physicists are beginning to understand how it works. The technique could have applications for robotics in the future. In 2021, Hamdi Ucar – then at ...