which are expensive and use electricity. Meanwhile, the tokamak, another promising machine, is less stable. Scientists had ...

When two magnets are close, they create pushing or pulling forces on one another. These forces are strongest at the ends of the magnets. The two ends of a magnet are known as the north pole and ...

So [Andrew Fentem]’s magnetic hockey project certainly pushes all our buttons, as it’s a game superficially similar to an air hockey table in which a magnetic puck is accelerated by a handheld ...