permanent magnets
Naturally persistent attractors
Permanent magnets are materials that maintain their magnetic properties without an external power source, unlike electromagnets which require electric current.
Made from iron, nickel, cobalt, or rare-earth elements, they retain magnetism indefinitely under normal conditions: The refrigerator door uses permanent magnets to stay closed.
Found in speakers, motors, and countless everyday devices.
- alnicoMagnetic metallic composite
- lodestoneNaturally magnetic mineral
- field linesPaths depicting field strength
- ferriteMagnetic ceramic compound
- rare earth elementsSeventeen metallic elements, often mined together
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