Ferrofluids

English: A ferrofluid is a liquid which becomes strongly polarised in the presence of a magnetic field.

Deutsch: Ein Ferrofluid bezeichnet eine Flüssigkeit, die auf ein magnetisches Feld reagiert.

Français : Un ferrofluide est un liquide qui réagit à un champ magnétique extérieur en se hérissant de pointes.

Ferrofluid on glass, with a rare earth magnet	Ferrofluid under the influence of a strong/steep magnetic field	Ferrofluid collects near the poles of a powerful magnet (under oily surface)	A Ferrofluid, influenced by an underneath magnet
Ferrofluid under the influence of a strong/steep magnetic field	Ferrofluid spreads out across the pole of this spherical magnet	A ferrofluid in a magnetic field showing normal field instability caused by a neodymium magnet beneath the dish	Closeup of ferrofluid on a magnet