{"id":241812,"date":"2016-07-11T02:00:00","date_gmt":"2016-07-10T23:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=65f618cfde57418c3566e32fdd73e4fb"},"modified":"2016-07-11T02:00:00","modified_gmt":"2016-07-10T23:00:00","slug":"electromagnetic-potentials-basis-for-energy-density-and-power-flux","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=241812","title":{"rendered":"Electromagnetic potentials basis for energy density and power flux"},"content":{"rendered":"<p>In rounding out the education of students in advanced courses in applied electromagnetics it is<br \/>\nincumbent on us as mentors to raise issues that encourage appreciation of certain subtle aspects<br \/>\nthat are often overlooked during first exposure to the field. One of these has to do with the<br \/>\ninterplay between fields and potentials, with the latter often seen as just a convenient<br \/>\nmathematical artifice useful in solving Maxwell\u2019s equations. Nonetheless, to those practiced in<br \/>\napplication it is well understood that various alternatives in the use of fields and potentials are<br \/>\navailable within electromagnetic (EM) theory for the definitions of energy density, momentum<br \/>\ntransfer, EM stress\u2013energy tensor, and so forth. Although the various options are all compatible<br \/>\nwith the basic equations of electrodynamics (e.g., Maxwell\u2019s equations, Lorentz force law, gauge<br \/>\ninvariance), nonetheless certain alternative formulations lend themselves to being seen as<br \/>\npreferable to others with regard to the tra&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In rounding out the education of students in advanced courses in applied electromagnetics it is<br \/>\nincumbent on us as mentors to raise issues that encourage appreciation of certain subtle aspects<br \/>\nthat are often overlooked during first exposure to the fi&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-241812","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/241812","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=241812"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/241812\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=241812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=241812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=241812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}