Copper doesn’t stick to magnets but that doesn’t mean it can’t react to one. Drop a magnet through a copper tube and watch what happens: it falls surprisingly

Copper doesn’t stick to magnets but that doesn’t mean it can’t react to one. Drop a magnet through a copper tube and watch what happens: it falls surprisingly slowly. The moving magnet changes the magnetic field inside the copper, creating tiny electrical currents that push back against its motion…