{"id":380553,"date":"2023-09-25T07:51:19","date_gmt":"2023-09-25T05:51:19","guid":{"rendered":"https:\/\/www.pcnen.com\/portal\/?p=380553"},"modified":"2023-09-25T07:51:19","modified_gmt":"2023-09-25T05:51:19","slug":"cestice-se-kotrljaju-uzbrdo-video","status":"publish","type":"post","link":"https:\/\/www.pcnen.com\/portal\/2023\/09\/25\/cestice-se-kotrljaju-uzbrdo-video\/","title":{"rendered":"\u010cestice se kotrljaju uzbrdo (video)"},"content":{"rendered":"<p>Nau\u010dnici sa Univerziteta Lehigh (Bethlehem, Pennsylvania, SAD) su stvorili mikro\u010destice koje se pona\u0161aju neo\u010dekivano &#8211; mikroskopske \u010destice polimetil metakrilatne plastike presvu\u010dene \u017eeljeznim oksidom mogu se kretati uzbrdo, uprkos gravitaciji, pod uticajem magnetnog polja.<\/p>\n<p>Kada se aktivira rotiraju\u0107e magnetsko polje u blizini nagnute gomile \u010destica, svaka \u010destica do\u017eivljava zakretni moment, a zajedno s fluktuiraju\u0107im privla\u010denjem me\u0111u \u010desticama, one se samostalno penju uz padinu.<\/p>\n<p>Ta pojava naziva se &#8220;negativni ugao mirovanja&#8221;, a magnentno polje prisiljava \u010destice da se privremeno pove\u017eu i kre\u0107u zajedno.<\/p>\n<p>Ja\u010de magnetno polje pove\u0107ava koheziju \u010destica, \u0161to rezultira br\u017eim kretanjem prema gore.<\/p>\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/IpINh2iRZJg?si=UCNptbnaqhqmyXEz\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nau\u010dnici sa Univerziteta Lehigh (Bethlehem, Pennsylvania, SAD) su stvorili mikro\u010destice koje se pona\u0161aju neo\u010dekivano<\/p>\n","protected":false},"author":1,"featured_media":380556,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[9],"tags":[],"class_list":["post-380553","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zanimljivosti"],"_links":{"self":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/380553","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/comments?post=380553"}],"version-history":[{"count":1,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/380553\/revisions"}],"predecessor-version":[{"id":380557,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/380553\/revisions\/380557"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/media\/380556"}],"wp:attachment":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/media?parent=380553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/categories?post=380553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/tags?post=380553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}