{"id":246,"date":"2020-03-04T10:38:36","date_gmt":"2020-03-04T09:38:36","guid":{"rendered":"https:\/\/kids.esa.int\/froth_and_fizz_creating_the_perfect_foam_in_space\/"},"modified":"2026-10-08T00:25:57","modified_gmt":"2026-10-07T22:25:57","slug":"froth_and_fizz_creating_the_perfect_foam_in_space","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/froth_and_fizz_creating_the_perfect_foam_in_space\/","title":{"rendered":"Vaahdot ja kuplat: t\u00e4ydellisen vaahdon luominen avaruudessa"},"content":{"rendered":"<div class=\"lede\">\n<p>Tykk\u00e4\u00e4tk\u00f6 leikki\u00e4 saippuakuplilla kylvyss\u00e4? Kun kuplia on paljon yhdess\u00e4, sit\u00e4 kutsutaan vaahdoksi, ja monet vaahdot ovat hy\u00f6dyllisi\u00e4 jokap\u00e4iv\u00e4isess\u00e4 el\u00e4m\u00e4ss\u00e4mme. Jotkut ruoat ja juomat maistuvat paremmin vaahdon ansiosta, kuten kahvin pinnalla oleva vaahto tai milkshaken vaahto. My\u00f6s monissa puhdistusaineissa ja l\u00e4\u00e4kkeiss\u00e4 k\u00e4ytet\u00e4\u00e4n vaahtoa.<\/p>\n<\/div>\n<p>Erilaisille vaahdoille sopivien t\u00e4ydellisten kuplien luominen on kuitenkin hankalaa! Maapallolla vaahtoa muodostava kaasun ja nesteen seos alkaa muuttua nopeasti. Painovoima vet\u00e4\u00e4 kuplien v\u00e4liss\u00e4 olevaa nestett\u00e4 alasp\u00e4in, ja pienet kuplat kutistuvat, kun taas suuret kuplat usein kasvavat. Pian vaahto hajoaa ja muuttuu nesteeksi. Siksi kylpyammeesi kuplat lopulta puhkeavat, vaikka et niit\u00e4 sormellasi t\u00f6kisik\u00e4\u00e4n!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"4288\" data-credit=\"NASA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2009\/10\/De_Winne_with_the_Foam_Stability_experiment\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2009\/10\/de_winne_with_the_foam_stability_experiment\/9979121-2-eng-GB\/De_Winne_with_the_Foam_Stability_experiment.jpg\" alt=\"De Winne with the Foam Stability experiment\"><figcaption>De Winne vaahtovakauskokeessa<\/figcaption><\/figure>\n<p>Ent\u00e4 jos voisit tutkia vaahtoja ilman, ett\u00e4 painovoima tuhoaisi kuplat? Juuri sit\u00e4 tutkijat tekev\u00e4t kansainv\u00e4lisell\u00e4 avaruusasemalla! Avaruusaseman painottomat olosuhteet j\u00e4ljittelev\u00e4t painovoimattomuutta, joten kuplat eiv\u00e4t puhkea yht\u00e4 nopeasti ja vaahdot pysyv\u00e4t kosteina pidemp\u00e4\u00e4n. Vuonna 2009 ESA:n astronautti Frank De Winne suoritti vaahdon vakauden kokeen kansainv\u00e4lisell\u00e4 avaruusasemalla. H\u00e4n havaitsi, ett\u00e4 avaruuden painottomuudessa oli mahdollista luoda eritt\u00e4in vakaita vaahtoja!<\/p>\n<figure class=\"wp-block-embed is-type-video\"><iframe src=\"https:\/\/www.esa.int\/content\/view\/embedjw\/533124\" width=\"640\" height=\"360\" frameborder=\"0\"><\/iframe><\/figure>\n<p>Vaahtotutkimus on parantanut elintarviketuotantoamme. C\u00e9cile Gehin-Delval on vanhempi tutkimus- ja kehitysasiantuntija Nestl\u00e9n tutkimuslaboratorioissa Sveitsiss\u00e4. H\u00e4n sanoo: \u201cVaahtokuplien vakaus voi parantaa joidenkin elintarvikkeiden ja juomien laatua, rakennetta, makua ja s\u00e4ilyvyytt\u00e4. T\u00e4m\u00e4n tutkimuksen avulla pystyimme luomaan l\u00e4hes t\u00e4ydellisi\u00e4 ilmakuplia maitotuotteisiimme, j\u00e4\u00e4tel\u00f6ihimme ja lemmikkiel\u00e4inten ruokiin.\u201d<\/p>\n<p>Joten kun seuraavan kerran otat vaahtokylvyn, mieti hetki vaahtoa ja sit\u00e4, kuinka jopa avaruudessa olevat astronautitkin tykk\u00e4\u00e4v\u00e4t leikki\u00e4 kuplilla!<\/p>\n<p><i>Mielenkiintoinen fakta: Vaahtoa voidaan valmistaa jopa metallista. Alumiinivaahto on yht\u00e4 lujaa kuin puhdas metalli, mutta paljon kevyemp\u00e4\u00e4!<\/i><\/p>","protected":false},"excerpt":{"rendered":"<p>Do you like to play with bubbles in your bath? When there are lots of bubbles together it is known as a foam, and many foams are useful in our [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2004\/11\/three_experiments_will_investigate_properties_of_foam\/9672463-3-eng-GB\/Three_experiments_will_investigate_properties_of_foam.jpg","esa_banner_description":"Three experiments will investigate properties of foam","esa_banner_credit":"SSC","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/11\/Three_experiments_will_investigate_properties_of_foam","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-246","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/246","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=246"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/246\/revisions"}],"predecessor-version":[{"id":4371,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/246\/revisions\/4371"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=246"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=246"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=246"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=246"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=246"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=246"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=246"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}