Two researchers who independently developed the neodymium magnet — used in everything from hard disk drives to automobiles — have been awarded the 44th Honda Prize. In 1982, two researchers ...
[Erich] reverse-engineered a disk and found the polarity using magnets (natch). Then got to work designing a replacement with cavities to hold six 1mm x 1mm x 1mm neodymium magnets and printed it out.
This trick is neat. And I’ve now proven that it does not work with neodymium magnets. It happened while working on a new product. I’m using a plastic part as a rotating cover. In one position ...
Neodymium is a rare earth metal - chemical ... discovered that running hydrogen gas through old hard-disk drives turns the magnets into powder which can be harvested, re-packed and coated, to ...
Neodymium-iron-boron is the strongest ... volume was fundamental to the development of lightweight hard disk drives. Nd-Fe-B magnets are part of the mechanism that sweeps the read-write heads ...