In this situation they act as a magnet - but only whilst in the magnetic field. This is called induced ... are invisible but they fill the space around a magnet where the magnetic forces work ...

How a Generator Works When an electric current flows through a wire, it generates a three-dimensional magnetic force field around the wire, similar to that surrounding a bar magnet. Magnets are ...

Magnetic cilia—artificial hairs whose movement is powered by embedded magnetic particles—have been around for ... use of "soft" magnets, which do not generate a magnetic field but become ...

Magnetic fields lines are invisible but they fill the space around a magnet where ... they can attract or repel other magnets. Although we cannot see magnetic field lines, we can detect them ...