Everyday Uses of Magnets

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People use magnets to keep notes on refrigerator doors. They're an essential part of technology items such as speakers, motors and computer hard disks. And credit cards carry account information on a magnetic strip.

Everyday Uses of Magnets
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Magnets are a simple, reliable way to latch doors on refrigerators and cabinets.

Refrigerator door
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From tiny ear buds to stadium PA systems, every speaker has a magnet in it. The stronger the magnet, the better the sound quality.

Speaker
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Many familiar toys such as the Woolly Willy drawing game use magnets. Some construction toys use magnets to securely attach parts.

Toy
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DC motors have a set of permanent magnets and electromagnets inside. When connected to a battery, the electromagnets repel the permanent magnets and make the motor spin.

Refrigerator magnets are used for everything from notes to jokes to the pediatrician's phone number.

Magnets
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Credit cards have a strip of magnetic material on their back side. Account data are recorded on it in a special, machine-readable format.

Credit card
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