{"id":447,"date":"2019-10-15T13:19:43","date_gmt":"2019-10-15T10:19:43","guid":{"rendered":"https:\/\/blog.edu.turku.fi\/scienceed\/?p=447"},"modified":"2019-10-15T13:19:43","modified_gmt":"2019-10-15T10:19:43","slug":"varmluftsfarkost-av-tepase","status":"publish","type":"post","link":"https:\/\/blog.edu.turku.fi\/scienceed\/2019\/10\/15\/varmluftsfarkost-av-tepase\/","title":{"rendered":"Varmluftsfarkost av tep\u00e5se"},"content":{"rendered":"<blockquote><p>Det h\u00e4r \u00e4r ett experiment som man m\u00e5ste vara mycket f\u00f6rsiktig med, i och med att man handskas med \u00f6ppen eld.<\/p><\/blockquote>\n<p>V\u00e4lj en vanlig tep\u00e5se (ej triangelp\u00e5se). Klipp av tep\u00e5sen strax under tillslutningen och h\u00e4ller ut inneh\u00e5llet. Vik upp den tomma p\u00e5sen s\u00e5 att man f\u00e5r en l\u00e5ng, smal, ih\u00e5lig cylinder av pappret. Cylindern placeras st\u00e5ende p\u00e5 underlaget och man t\u00e4nder p\u00e5 \u00f6vre delen.<\/p>\n<p>Det som h\u00e4nder \u00e4r att elden sprider sig ner\u00e5t och n\u00e4r den n\u00e5tt till nedre delen av &#8221;farkosten&#8221; lyfter resterna av p\u00e5sen p.g.a den stigande varmluften.<\/p>\n<p>F\u00f6rklaring \u00e4r att vid f\u00f6rbr\u00e4nning v\u00e4rms den omgivande luften. D\u00e5 temperaturen<br \/>\n\u00f6kar, utvidgas luften och f\u00e5r p\u00e5 s\u00e5 s\u00e4tt l\u00e4gre densitet. Den varma luften med l\u00e4gre densitet stiger upp\u00e5t och ger d\u00e5 upphov till en luftstr\u00f6m. Tep\u00e5spappret dras med i luftstr\u00f6mmen s\u00e5 snart vikten har minskat tillr\u00e4ckligt. Vikten minskar allt eftersom pappret f\u00f6rbr\u00e4nns.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Det h\u00e4r \u00e4r ett experiment som man m\u00e5ste vara mycket f\u00f6rsiktig med, i och med att man handskas med \u00f6ppen eld. V\u00e4lj en vanlig tep\u00e5se (ej triangelp\u00e5se). Klipp av tep\u00e5sen strax under tillslutningen och h\u00e4ller ut inneh\u00e5llet. Vik upp den tomma p\u00e5sen s\u00e5 att man f\u00e5r en l\u00e5ng, smal, ih\u00e5lig cylinder av pappret. Cylindern placeras &hellip; <a href=\"https:\/\/blog.edu.turku.fi\/scienceed\/2019\/10\/15\/varmluftsfarkost-av-tepase\/\" class=\"more-link\">Forts\u00e4tt l\u00e4sa<span class=\"screen-reader-text\"> \u201dVarmluftsfarkost av tep\u00e5se\u201d<\/span><\/a><\/p>\n","protected":false},"author":2590,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[218561,4842,218347],"tags":[],"class_list":["post-447","post","type-post","status-publish","format-standard","hentry","category-experiment","category-fysik","category-veckans-ide"],"_links":{"self":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/447","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/users\/2590"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/comments?post=447"}],"version-history":[{"count":1,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/447\/revisions"}],"predecessor-version":[{"id":448,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/447\/revisions\/448"}],"wp:attachment":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/media?parent=447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/categories?post=447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/tags?post=447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}