{"id":361,"date":"2022-01-09T09:31:59","date_gmt":"2022-01-09T09:31:59","guid":{"rendered":"https:\/\/qpr.ca\/blogs\/physics\/?p=361"},"modified":"2022-01-09T09:50:20","modified_gmt":"2022-01-09T09:50:20","slug":"if-magnetism-is-the-relativistic-effect-on-the-electric-field-how-does-someone-explain-magnetic-fields-generated-by-a-particles-spin-also-how-does-someone-explain-l","status":"publish","type":"post","link":"https:\/\/qpr.ca\/blogs\/physics\/2022\/01\/09\/if-magnetism-is-the-relativistic-effect-on-the-electric-field-how-does-someone-explain-magnetic-fields-generated-by-a-particles-spin-also-how-does-someone-explain-l\/","title":{"rendered":"If magnetism is the relativistic effect on the electric field, how does someone explain magnetic fields generated by a particle&#8217;s spin? Also, how does someone explain light as both fields propagating perpendicularly if they are &#8216;the same thing&#8217;?"},"content":{"rendered":"<p>Source: <em><a href=\"https:\/\/www.quora.com\/If-magnetism-is-the-relativistic-effect-on-the-electric-field-how-does-someone-explain-magnetic-fields-generated-by-a-particles-spin-Also-how-does-someone-explain-light-as-both-fields-propagating-perpendicularly-if\/answer\/Alan-Cooper-5\">(164) Alan Cooper&#8217;s answer to If magnetism is the relativistic effect on the electric field, how does someone explain magnetic fields generated by a particle&#8217;s spin? Also, how does someone explain light as both fields propagating perpendicularly if they are &#8216;the same thing&#8217;? &#8211; Quora<\/a><\/em><\/p>\n<div class=\"q-text\">\n<p class=\"q-text qu-display--block qu-wordBreak--break-word qu-textAlign--start\">The only situation in which magnetism could be considered to be&nbsp;just&nbsp;the relativistic effect on the electric field is one in which there is an inertial frame in which all charges are stationary. In any situation with relatively moving charges there is a magnetic field in every frame, and it is only the way in which the splitting of the combined electromagnetic field varies between observers that is a relativistic effect. In particular, a current loop always produces a magnetic field in every reference frame and the situation for electron spin is analogous (though not quite the same because it\u2019s a pure quantum effect and not really due to actually moving charges).<\/p>\n<p class=\"q-text qu-display--block qu-wordBreak--break-word qu-textAlign--start\">In the absence of any static fields, the electric and magnetic fields are perpendicular to one another but for light waves they both propagate in the&nbsp;same&nbsp;direction.<\/p>\n<\/div>\n<div class=\"q-text qu-dynamicFontSize--small qu-mt--small qu-color--gray_light qu-passColorToLinks\"><\/div>\n<div class=\"q-box qu-zIndex--action_bar q-sticky qu-mx--n_medium qu-bg--raised\">\n<div class=\"q-box qu-px--medium ActionBar___StyledBox-sc-1tz1b8b-1 cEklLf\">\n<div class=\"q-flex qu-justifyContent--space-between qu-alignItems--center qu-flexWrap--nowrap qu-py--tiny\">\n<div class=\"q-flex qu-alignItems--center\">\n<div class=\"q-inlineFlex qu-mr--tiny\">\n<div class=\"q-inlineFlex qu-borderRadius--pill qu-alignItems--center\">\n<div class=\"q-relative qu-display--inline-flex\">\n<div class=\"q-box qu-display--inline-flex\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Source: (164) Alan Cooper&#8217;s answer to If magnetism is the relativistic effect on the electric field, how does someone explain magnetic fields generated by a particle&#8217;s spin? Also, how does someone explain light as both fields propagating perpendicularly if they are &#8216;the same thing&#8217;? &#8211; Quora The only situation in which magnetism could be considered &hellip; <a href=\"https:\/\/qpr.ca\/blogs\/physics\/2022\/01\/09\/if-magnetism-is-the-relativistic-effect-on-the-electric-field-how-does-someone-explain-magnetic-fields-generated-by-a-particles-spin-also-how-does-someone-explain-l\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">If magnetism is the relativistic effect on the electric field, how does someone explain magnetic fields generated by a particle&#8217;s spin? Also, how does someone explain light as both fields propagating perpendicularly if they are &#8216;the same thing&#8217;?<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[3],"topics":[],"class_list":["post-361","post","type-post","status-publish","format-standard","hentry","category-quora-answers","tag-electromagnetism"],"_links":{"self":[{"href":"https:\/\/qpr.ca\/blogs\/physics\/wp-json\/wp\/v2\/posts\/361","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qpr.ca\/blogs\/physics\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qpr.ca\/blogs\/physics\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qpr.ca\/blogs\/physics\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/qpr.ca\/blogs\/physics\/wp-json\/wp\/v2\/comments?post=361"}],"version-history":[{"count":2,"href":"https:\/\/qpr.ca\/blogs\/physics\/wp-json\/wp\/v2\/posts\/361\/revisions"}],"predecessor-version":[{"id":368,"href":"https:\/\/qpr.ca\/blogs\/physics\/wp-json\/wp\/v2\/posts\/361\/revisions\/368"}],"wp:attachment":[{"href":"https:\/\/qpr.ca\/blogs\/physics\/wp-json\/wp\/v2\/media?parent=361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qpr.ca\/blogs\/physics\/wp-json\/wp\/v2\/categories?post=361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qpr.ca\/blogs\/physics\/wp-json\/wp\/v2\/tags?post=361"},{"taxonomy":"topics","embeddable":true,"href":"https:\/\/qpr.ca\/blogs\/physics\/wp-json\/wp\/v2\/topics?post=361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}