{"id":2513,"date":"2026-02-07T04:56:33","date_gmt":"2026-02-07T04:56:33","guid":{"rendered":"https:\/\/www.europesays.com\/dk\/2513\/"},"modified":"2026-02-07T04:56:33","modified_gmt":"2026-02-07T04:56:33","slug":"hans-christian-orsted-magnetic-fields-electromagnetism-electrodynamics","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/dk\/2513\/","title":{"rendered":"Hans Christian \u00d8rsted | Magnetic Fields, Electromagnetism, Electrodynamics"},"content":{"rendered":"<p>\t\t\t\tTable of Contents<\/p>\n<p>\t\t\t\tTable of Contents<\/p>\n<p> Ask Anything<\/p>\n<p class=\"topic-paragraph\">Hans Christian \u00d8rsted (born August 14, 1777, Rudk\u00f8bing, Denmark\u2014died March 9, 1851, Copenhagen) was a Danish physicist and chemist who discovered that electric current in a wire can deflect a magnetized <a href=\"https:\/\/www.britannica.com\/technology\/compass-navigational-instrument\" class=\"md-crosslink autoxref \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">compass<\/a> needle, a phenomenon the importance of which was rapidly recognized and which inspired the development of <a href=\"https:\/\/www.britannica.com\/science\/electromagnetism\" class=\"md-crosslink \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">electromagnetic<\/a> theory.<\/p>\n<p class=\"topic-paragraph\">In 1806 \u00d8rsted became a professor at the University of Copenhagen, where his first physical researches dealt with <a href=\"https:\/\/www.britannica.com\/science\/electric-current\" class=\"md-crosslink \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">electric currents<\/a> and <a href=\"https:\/\/www.britannica.com\/science\/acoustics\" class=\"md-crosslink \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">acoustics<\/a>. During an evening lecture in April 1820, \u00d8rsted discovered that a magnetic needle aligns itself perpendicularly to a current-carrying wire, definite experimental evidence of the relationship between <a href=\"https:\/\/www.britannica.com\/science\/electricity\" class=\"md-crosslink autoxref \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">electricity<\/a> and <a href=\"https:\/\/www.britannica.com\/science\/magnetism\" class=\"md-crosslink autoxref \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">magnetism<\/a>.<\/p>\n<p>\n\t\t\t\tQuick Facts<\/p>\n<p>\t\t\t\t\t\t\t\t\u00d8rsted also spelled:<br \/>\n\t\t\t\t\t\t\t\tOersted<\/p>\n<p>\t\t\t\t\t\t\t(Show\u00a0more)<\/p>\n<p>\t\t\t\t\t\t\t\tBorn:<br \/>\n\t\t\t\t\t\t\t\tAugust 14, 1777, Rudk\u00f8bing, <a href=\"https:\/\/www.britannica.com\/place\/Denmark\" rel=\"nofollow noopener\" target=\"_blank\">Denmark<\/a><\/p>\n<p>\t\t\t\t\t\t\t(Show\u00a0more)<\/p>\n<p>\t\t\t\t\t\t\t\tDied:<br \/>\n\t\t\t\t\t\t\t\tMarch 9, 1851, <a href=\"https:\/\/www.britannica.com\/place\/Copenhagen\" rel=\"nofollow noopener\" target=\"_blank\">Copenhagen<\/a> (aged  73)<\/p>\n<p>\t\t\t\t\t\t\t(Show\u00a0more)<\/p>\n<p class=\"topic-paragraph\">\u00d8rsted\u2019s discovery (1820) of <a href=\"https:\/\/www.britannica.com\/science\/piperine\" class=\"md-crosslink \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">piperine<\/a>, one of the <a class=\"md-dictionary-link md-dictionary-tt-off eb\" data-term=\"pungent\" href=\"https:\/\/www.britannica.com\/dictionary\/pungent\" data-type=\"EB\" rel=\"nofollow noopener\" target=\"_blank\">pungent<\/a> components of <a href=\"https:\/\/www.britannica.com\/plant\/black-pepper-plant\" class=\"md-crosslink \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">pepper<\/a>, was an important contribution to <a href=\"https:\/\/www.britannica.com\/science\/chemistry\" class=\"md-crosslink autoxref \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">chemistry<\/a>, as was his preparation of metallic <a href=\"https:\/\/www.britannica.com\/science\/aluminum\" class=\"md-crosslink \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">aluminum<\/a> in 1825. In 1824 he founded a society devoted to the spread of scientific knowledge among the general public. Since 1908 this society has awarded an \u00d8rsted Medal for outstanding contributions by Danish physical scientists. In the early 1930s the name <a href=\"https:\/\/www.britannica.com\/science\/oersted\" class=\"md-crosslink \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">oersted<\/a> was adopted for the physical unit of <a href=\"https:\/\/www.britannica.com\/science\/magnetic-field\" class=\"md-crosslink \" data-show-preview=\"true\" rel=\"nofollow noopener\" target=\"_blank\">magnetic field<\/a> strength in the centimetre-gram-second system.<\/p>\n<p><a class=\"link-module shadow-sm d-block qa-quiz-module\" href=\"https:\/\/www.britannica.com\/quiz\/faces-of-science\" rel=\"nofollow noopener\" target=\"_blank\"><\/p>\n<p>        <img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.europesays.com\/dk\/wp-content\/uploads\/2026\/02\/Michael-Faraday-John-Frederic-Daniell.jpg\" alt=\"Michael Faraday (L) English physicist and chemist (electromagnetism) and John Frederic Daniell (R) British chemist and meteorologist who invented the Daniell cell.\" class=\"rounded-sm mr-15\" width=\"70\"\/><\/p>\n<p>Britannica Quiz<\/p>\n<p>Faces of Science<\/p>\n<p><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Table of Contents Table of Contents Ask Anything Hans Christian \u00d8rsted (born August 14, 1777, Rudk\u00f8bing, Denmark\u2014died March&hellip;\n","protected":false},"author":2,"featured_media":2514,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[285],"tags":[478,2831,2830,2829,2828,287],"class_list":{"0":"post-2513","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-orsted","8":"tag-article","9":"tag-britannica","10":"tag-encyclopeadia","11":"tag-encyclopedia","12":"tag-hans-christian-orsted","13":"tag-orsted"},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/dk\/wp-json\/wp\/v2\/posts\/2513","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/dk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/dk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/dk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/dk\/wp-json\/wp\/v2\/comments?post=2513"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/dk\/wp-json\/wp\/v2\/posts\/2513\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/dk\/wp-json\/wp\/v2\/media\/2514"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/dk\/wp-json\/wp\/v2\/media?parent=2513"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/dk\/wp-json\/wp\/v2\/categories?post=2513"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/dk\/wp-json\/wp\/v2\/tags?post=2513"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}