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Ferrofluid is a liquid that is attracted to the poles of a magnet. It is a colloidal liquid made of nanoscale ferromagnetic or ferrimagnetic particles suspended in a carrier fluid (usually an organic solvent or water). [1] Each magnetic particle is thoroughly coated with a surfactant to inhibit clumping. Large ferromagnetic particles can be ...
Liquid hydrogen is not the only way cryogenically to cool a magnet, indeed conventionally superconductors are cooled using liquid helium at 4.2K and for conventional conductor pulsed magnets (including copper) most attention has been given to liquid nitrogen at 77 K. [15] Liquid hydrogen can be expected to drive better performance than liquid ...
A magnetic stirrer or magnetic mixer is a laboratory device that employs a rotating magnetic field to cause a stir bar (or flea) immersed in a liquid to spin very quickly, thus stirring it. The rotating field may be created either by a rotating magnet or a set of stationary electromagnets, placed beneath the vessel with the liquid.
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.
Scientists have finally proved the existence of a new type of magnet, after previously believing it impossible.. The team that discovered the phenomenon, which is called altermagnetism, say it ...
In 1986, the discovery of high temperature superconductors by Georg Bednorz and Karl Müller energized the field, raising the possibility of magnets that could be cooled by liquid nitrogen instead of the more difficult-to-work-with helium. In 2007, a magnet with windings of YBCO achieved a world record field of 26.8 T. [13]
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