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simianaudio commented on the word ferrofluid
A ferrofluid is a liquid which becomes strongly polarised in the presence of a magnetic field.Ferrofluids are composed of nanoscale ferromagnetic particles suspended in a carrier fluid, usually an organic solvent or water. The ferromagnetic nano-particles are coated with a surfactant to prevent their agglomeration (due to van der Waals and magnetic forces). Although the name may suggest otherwise, ferrofluids do not display ferromagnetism, since they do not retain magnetisation in the absence of an externally applied field. In fact, ferrofluids display paramagnetism, and are often referred as being "superparamagnetic" due to their large magnetic susceptibility. True ferromagnetic fluids are difficult to create at present.
September 5, 2008
reesetee commented on the word ferrofluid
Wow. Beautiful and creepy at the same time. Thanks, VO.
December 2, 2007
chained_bear commented on the word ferrofluid
It's kinda cool. I liked the Optical Illusion article that popped up on the same page too. Thanks for the link--and the word.
vanishedone commented on the word ferrofluid
See 'Ferrofluids Used to Create Mind-Blowing Sculptures' for some prettiness with a short commentary.
December 1, 2007