and where they can attract or repel other magnets. Although we cannot see magnetic field lines, we can detect them using iron filings. The tiny pieces of iron line up in a magnetic field.

The video explains the concepts of magnetic, electric, and gravitational fields using simple demonstrations. It shows how ...

Magnets are also surrounded by a similar three-dimensional field ... the lines of magnetic force surrounding the magnet. The simplest generator consists of just a coil of wire and a bar magnet.

Many people will remember experiments in school with iron filings and bar magnets to ... the details of the magnetic field. Just as they are on Earth, magnetic field lines are of crucial ...

If these metals have not been turned into a permanent magnet they will still be attracted to a magnet if placed within a magnetic field ... Magnetic fields lines are invisible but they fill ...