Experiments with magnets and electromagnets which can be built and demonstrated; for elementary school through high school classrooms. Can also be a starting point for science fair projects.

make toys at home with common household materials, often in only a few minutes, that demonstrate fascinating scientific principles.

GMW Associates is known around the world as a leading supplier of electromagnet systems, magnetic field and current measurement instruments.

how to test battery saver relay, This same basic test can also be used to check a questionable relay. A relay is nothing more than a remote switch that uses an electromagnet to close a set of contact points. When the relay magnet is supplied with voltage, the points close and battery voltage is routed through the main circuit. Relays are often used in circuits to reduce the amount

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