Dictionary:Oersted

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{{#category_index:O|oersted}} (ur’ sted) A unit of magnetic-field intensity (in the cgs-emu system) in free space; the field that would exert a force of 1 dyne on a unit magnetic pole. Equal to 1 ampere turn/(4π103 m). See Figure M-1. Named for Hans Christian Oersted (1777–1851), Danish physicist.