{"id":1976,"date":"2025-10-22T11:59:56","date_gmt":"2025-10-22T09:59:56","guid":{"rendered":"https:\/\/felveteli.uni-pannon.hu\/?p=1976"},"modified":"2025-10-22T11:59:57","modified_gmt":"2025-10-22T09:59:57","slug":"196c-kiserletek-cseppfolyos-nitrogennel","status":"publish","type":"post","link":"https:\/\/felveteli.uni-pannon.hu\/en\/196c-kiserletek-cseppfolyos-nitrogennel\/","title":{"rendered":"-196\u00b0C \u2013 Experiments with liquid nitrogen"},"content":{"rendered":"<p>Nitrogen, which makes up more than 78% of the air (%), is colourless, odourless, and inert. In contrast, fascinating experiments can be carried out with extremely cold liquid nitrogen \u2013 at minus 196\u00b0C. During the presentation, we will observe how everyday materials behave at such low temperatures, we will produce liquid oxygen, and we will build a nitrogen-powered rocket.<\/p>\n\n\n\n<p>We recommend the performance for ages 9 and up.<\/p>","protected":false},"excerpt":{"rendered":"<p>A nitrog\u00e9n, amely a leveg\u0151 t\u00f6bb, mint 78%-\u00e1t teszi ki, sz\u00edntelen, szagtalan, unalmas. Az extr\u00e9m hideg &#8211; m\u00ednusz 196\u00b0C-os \u2013 cseppfoly\u00f3s nitrog\u00e9nnel ezzel szemben \u00e9rdekesebbn\u00e9l \u00e9rdekesebb k\u00eds\u00e9rletek v\u00e9gezhet\u0151k el. Az el\u0151ad\u00e1s sor\u00e1n megfigyelj\u00fck, hogy mik\u00e9nt viselkednek a h\u00e9tk\u00f6znapi anyagok ilyen alacsony h\u0151m\u00e9rs\u00e9kleten, foly\u00e9kony oxig\u00e9nt \u00e1ll\u00edtunk el\u0151 \u00e9s nitrog\u00e9nhajt\u00e1s\u00fa rak\u00e9t\u00e1t k\u00e9sz\u00edt\u00fcnk. Az el\u0151ad\u00e1st 9 \u00e9ves kort\u00f3l [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[29,25],"tags":[38,27],"kepzesi-terulet":[30],"class_list":["post-1976","post","type-post","status-publish","format-standard","hentry","category-open-university","category-termeszettudomany","tag-45-60-perc","tag-egyetem-vagy-kulso-helyszin","kepzesi-terulet-termeszettudomany"],"acf":{"kepzesi_terulet":"Term\u00e9szettudom\u00e1ny"},"_links":{"self":[{"href":"https:\/\/felveteli.uni-pannon.hu\/en\/wp-json\/wp\/v2\/posts\/1976","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/felveteli.uni-pannon.hu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/felveteli.uni-pannon.hu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/felveteli.uni-pannon.hu\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/felveteli.uni-pannon.hu\/en\/wp-json\/wp\/v2\/comments?post=1976"}],"version-history":[{"count":1,"href":"https:\/\/felveteli.uni-pannon.hu\/en\/wp-json\/wp\/v2\/posts\/1976\/revisions"}],"predecessor-version":[{"id":1977,"href":"https:\/\/felveteli.uni-pannon.hu\/en\/wp-json\/wp\/v2\/posts\/1976\/revisions\/1977"}],"wp:attachment":[{"href":"https:\/\/felveteli.uni-pannon.hu\/en\/wp-json\/wp\/v2\/media?parent=1976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/felveteli.uni-pannon.hu\/en\/wp-json\/wp\/v2\/categories?post=1976"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/felveteli.uni-pannon.hu\/en\/wp-json\/wp\/v2\/tags?post=1976"},{"taxonomy":"kepzesi-terulet","embeddable":true,"href":"https:\/\/felveteli.uni-pannon.hu\/en\/wp-json\/wp\/v2\/kepzesi-terulet?post=1976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}