Of all the materials in the world, only metals can be magnetic. But some metals are magnetic and some are not. The metals that are magnetic (attracted to magnets) are also the metals that can be made ...

The device sure looks like an electromagnet made with magnet wire and a steel core. But when he shows the ends of the core, you’ll see that the side that attracts ... on the metal it interacts ...

Just like these fridge magnets. A magnet attracts or repels things made from certain metals – even before they actually touch. When a magnet attracts, it pulls another object towards it.