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 ...
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 ...
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'A force more powerful than gravity within the Earth': How magnetism locked itself inside our planetThe image of an atom, with electrons swarming around a central nucleus bulging with protons and neutrons, is as iconic in our perception of science as the DNA helix or the rings of Saturn.
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