Template:POTD/2007-02-25: Difference between revisions
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|title=[[Ferrofluid]] |
|title=[[Ferrofluid]] |
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|texttitle=Ferrofluid |
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|caption='''[[Ferrofluid]]''' on glass, with a [[rare-earth magnet]] underneath. A ferrofluid is a liquid that becomes strongly [[polarization|polarised]] in the presence of a [[magnetic field]]. Ferrofluids are composed of [[ |
|caption='''[[Ferrofluid]]''' on glass, with a [[rare-earth magnet]] underneath. A ferrofluid is a liquid that becomes strongly [[Dipolar polarization|polarised]] in the presence of a [[magnetic field]]. Ferrofluids are composed of [[Nanotechnology|nanoscale]] [[ferromagnetism|ferromagnetic]] particles suspended in a [[Wiktionary:carrier|carrier]] [[fluid]], usually an organic solvent or water. Ferrofluids do not actually display ferromagnetism, since they do not retain [[magnetisation]] in the absence of an externally-applied field. |
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|credit=Photo credit: [[User:Gmaxwell|Greg Maxwell]]/[[User:Moondigger|Moondigger]] |
|credit=Photo credit: [[User:Gmaxwell|Greg Maxwell]]/[[User:Moondigger|Moondigger]] |
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Latest revision as of 20:40, 13 November 2020
Ferrofluid on glass, with a rare-earth magnet underneath. A ferrofluid is a liquid that 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. Ferrofluids do not actually display ferromagnetism, since they do not retain magnetisation in the absence of an externally-applied field.Photo credit: Greg Maxwell/Moondigger