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oersted |
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OerstedPronounced "erst-ed." The measurement of magnetic energy. The higher the Oe rating in a material, the more current is required to change its magnetic polarity. Named after the Danish scientist, Hans Cristian Oersted (1777-1851), it is used, for example, to measure the coercivity point on magnetic media. See coercivity. oersted [′ər·stəd] (electromagnetism) The unit of magnetic field strength in the centimeter-gram-second electromagnetic system of units, equal to the field strength at the center of a plane circular coil of one turn and 1-centimeter radius, when there is a current of 1/(2π) abamp in the coil; 1 oersted corresponds to approximately 79.577 amperes per meter. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The large data capacity has been achieved by using hard disk media sputter technology, including coercivities of 1,600 Oersteds and MrT of 2. |
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