Hard magnets, also referred to as permanent magnets, are magnetic materials that retain their magnetism after being magnetised
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electromagnetism - If you place a spring on a neodymium hard-drive magnet, it appears to vibrate in slow-motion. Why is that so? - Physics Stack Exchange
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Sintered Ferrite Magnet, Ferrite Magnet, Hard Ferrite Magnet, Ferrite Magnets Manufacturer, Exporter | Dailymag Technology
![electromagnetism - If you place a spring on a neodymium hard-drive magnet, it appears to vibrate in slow-motion. Why is that so? - Physics Stack Exchange electromagnetism - If you place a spring on a neodymium hard-drive magnet, it appears to vibrate in slow-motion. Why is that so? - Physics Stack Exchange](https://i.stack.imgur.com/7krCW.jpg)
electromagnetism - If you place a spring on a neodymium hard-drive magnet, it appears to vibrate in slow-motion. Why is that so? - Physics Stack Exchange
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