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Ferrofluid on glass, with a rare-earth magnet underneath. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements.Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets.
Ring magnets Most hard disk drives incorporate strong magnets This manually-powered flashlight uses a neodymium magnet to generate electricity Neodymium magnets have replaced alnico and ferrite magnets in many of the myriad applications in modern technology where strong permanent magnets are required, because their greater strength allows the ...
A samarium–cobalt (SmCo) magnet, a type of rare-earth magnet, is a strong permanent magnet made of two basic elements: samarium and cobalt.. They were developed in the early 1960s based on work done by Karl Strnat at Wright-Patterson Air Force Base and Alden Ray at the University of Dayton.
Case in point: Two of our very favorite gifts for kids and grandkids are still on sale for the same price they've been for a couple of weeks, including the Barbie Pool Party Dreamhouse (was $200 ...
The total kit includes 77 magnetic letters & numbers, 4 Crayola assorted chalk pieces, 3 spinning magnetic gears, and 10 stickers. $35 at Walmart Vacuum & Cleaning Deals
Amazon's October Prime Day sale might be over, but Walmart's Holiday Deals event is still going strong for several more days with brand new, hot-off-the-press deals unveiling now through through ...
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