Magnetic Field Viewer

Iron filings are trapped in a flat, plastic casing. When you hold the magnetic field viewer over magnets and magnetic fields, you can watch the movement of the iron fiings in response to the forces. Fun, interesting, and not nearly as messy as iron filings on the loose.

LL Demos & Labs: Compass in a Cup, Flipping Poles, A Magnet Naturally, Demagnetizing Iron, Electric Magnetic Effect, Mapping EM Fields,