While this isn’t the first time magnet implants have been mentioned ... Ear implants are the next most useful because oscillating magnetic fields can be translated to sound.

For instance, in maglev trains, powerful superconducting magnets create a strong magnetic field with diamagnetic ... eddy damping', which occurs when an oscillating system loses energy over ...

This means that their magnetism is there all the time and cannot be turned on or off as it can with an electromagnet. Converting a magnet to a non-magnet is called demagnetisation. Magnets are ...