Description: A sealed glass tube filled with iron flings may be used to demonstrate magnetization of a ferromagnet. Shake the filings into the long thin section of the tube. Magnetize the filings by ...

The magnetic field lines of a bar magnet can be viewed by using compasses or by shaking iron filings onto a platform above the magnet. Place the magnet on top of the paper in view of the document ...

The solenoids serve double duty — first, they move pieces of flat “fridge magnet” material close enough to attract iron filings. Their second duty is of course provide a clock tick that will ...