complete demagnetization

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Lancaster University — Infobox University name = Lancaster University motto = Patet omnibus veritas ( Truth lies open to all ) established = 1964 type = Public city = Lancaster country = England, UK campus = staff = 2,250 head label = Visitor head = Her Majesty The… … Wikipedia
Hard disk drive — Hard drive redirects here. For other uses, see Hard drive (disambiguation). Hard disk drive Mechanical interior of a modern hard disk drive Date invented 24 December 1954 [1] … Wikipedia
Refrigeration — Commercial refrigeration Ice is used to refriger … Wikipedia
Magnet — This article is about objects and devices that produce magnetic fields. For a description of magnetic materials, see magnetism. For other uses, see Magnet (disambiguation) … Wikipedia
Barkhausen effect — The Barkhausen effect is a name given to the noise in the magnetic output of a ferromagnet when the magnetizing force applied to it is changed. Discovered by German physicist Heinrich Barkhausen in 1919, it is caused by rapid changes of size of… … Wikipedia

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