Magnetism is usually taught as a story of straight lines, with field arrows marching neatly from north to south. In a lab at ...

The traditional method for visualizing magnetic fields, which your science teacher probably demonstrated at some point, is to sprinkle some iron filings onto a piece of paper and hold it over a magnet ...

A magnetometer is a device that measures magnetism: the direction, strength, or relative change of a magnetic field at a ...