Ferrofluid
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Ferrofluid is a dark coloured liquid that is attracted to the poles of a magnet. It is a colloidal liquid made of nanoscale ferromagnetic or ferrimagnetic particles suspended inside a carrier fluid. E
Ferrofluid on glass, with a neodymium magnet underneath
Steve Papell invented ferrofluid for NASA in 1963
R. E. Rosensweig with ferrofluid in his lab (1965)
Ferrofluid is the oily substance collecting at the poles of a magnet which is underneath the brown oil.
Neodymium magnet
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A neodymium magnet is a permanent magnet made from an alloy of neodymium, iron, and boron that forms the Nd2Fe14B tetragonal crystalline structure. They are the most widely used type of rare-earth mag
Ferrofluid
…Ferrofluid on glass, with a neodymium magnet underneath Steve Papell invented ferrofluid for NASA in 1963 Ferrofluid is a dark coloured liquid that is attracted to the poles of a magnet. It is a…
Block of neodymium magnet
Left: high-resolution transmission electron microscopy image of Nd2Fe14B; right: crystal structure with unit cell marked
Neodymium magnets (small cylinders) lifting steel spheres. Such magnets can lift thousands of times their own weight.
Ferrofluid on a glass plate displays the strong magnetic field of the neodymium magnet underneath.