{"id":1047,"date":"2010-06-30T07:54:00","date_gmt":"2010-06-30T05:54:00","guid":{"rendered":"https:\/\/kids.esa.int\/weightless_experiments_help_industries_on_earth\/"},"modified":"2026-10-08T00:35:16","modified_gmt":"2026-10-07T22:35:16","slug":"weightless_experiments_help_industries_on_earth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/weightless_experiments_help_industries_on_earth\/","title":{"rendered":"Painottomat kokeet auttavat teollisuutta maapallolla"},"content":{"rendered":"<div class=\"lede\">\n<p>Tyypillinen oleskelu Kansainv\u00e4lisell\u00e4 avaruusasemalla (ISS) kest\u00e4\u00e4 noin kuusi kuukautta. Mutta miten miehist\u00f6n j\u00e4senet viett\u00e4v\u00e4t aikansa siell\u00e4 ylh\u00e4\u00e4ll\u00e4? Suuri osa heid\u00e4n p\u00e4ivitt\u00e4isest\u00e4 toiminnastaan kuluu sellaisten kokeiden suorittamiseen, joilla voi olla k\u00e4yt\u00e4nn\u00f6n sovelluksia maan p\u00e4\u00e4ll\u00e4.<\/p>\n<\/div>\n<p>ISS on suurin ja edistynein avaruudessa koskaan lent\u00e4nyt tutkimusasema. Erityisvarusteltujen moduulien, kuten ESA:n Columbus-laboratorion, avulla tutkijat voivat tutkia monenlaisia aiheita aivan ainutlaatuisessa ymp\u00e4rist\u00f6ss\u00e4, jossa kaikki on painottomassa tilassa. Maassa painovoima vaikuttaa voimakkaasti kaikkeen, mit\u00e4 teemme, mutta kun painovoiman vaikutukset katoavat, tapahtuu hyvin outoja asioita.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"200\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/11\/A_flame_in_microgravity2\" 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\/2007\/11\/a_flame_in_microgravity2\/17893018-2-eng-GB\/A_flame_in_microgravity.jpg\" alt=\"A flame in microgravity\"><figcaption>Liekki mikropainovoimassa<\/figcaption><\/figure>\n<p>Olemme tottuneet n\u00e4kem\u00e4\u00e4n kynttil\u00e4n liekin kapenevan muotoisena. Ter\u00e4v\u00e4k\u00e4rkinen liekki muodostuu, kun kuumat kaasut nousevat yl\u00f6sp\u00e4in, koska ne ovat kevyempi\u00e4 kuin niit\u00e4 ymp\u00e4r\u00f6iv\u00e4 viile\u00e4 ilma. T\u00e4m\u00e4 viile\u00e4 ilma imeytyy kynttil\u00e4n syd\u00e4nlangan pohjaan ja toimittaa happea, joka pit\u00e4\u00e4 kynttil\u00e4vahan palamassa. Painottomuudessa kuuma kaasu ei kuitenkaan ole kevyemp\u00e4\u00e4 kuin viile\u00e4 ilma, joten se ei nouse yl\u00f6sp\u00e4in. Tuloksena on pieni, l\u00e4hes n\u00e4kym\u00e4t\u00f6n, py\u00f6re\u00e4 liekki. Varsinainen palaminen tapahtuu vain liekin pinnalla, jossa kynttil\u00e4vahasta per\u00e4isin oleva polttoaine voi sekoittua ulkoilman hapen kanssa.<\/p>\n<p>Tutkijat voivat oppia paljon tutkimalla, miten aineet palavat painottomuudessa. T\u00e4t\u00e4 tietoa voidaan sitten hy\u00f6dynt\u00e4\u00e4 esimerkiksi suunnitellessa auto- tai lentokonemoottoreita, jotka kuluttavat v\u00e4hemm\u00e4n polttoainetta ja aiheuttavat v\u00e4hemm\u00e4n saasteita.<\/p>\n<p>Toinen mielenkiintoinen tutkimusalue liittyy nesteiden sekoittumiseen. Monet arkiel\u00e4m\u00e4ss\u00e4 k\u00e4ytett\u00e4vist\u00e4 metalleista ovat seoksia \u2013 kahden tai useamman metallin sekoituksia. Seokset valmistetaan sulattamalla metallit niin, ett\u00e4 ne sekoittuvat toisiinsa. Maapallolla painovoima vaikuttaa voimakkaasti siihen, miten eri nestem\u00e4iset metallit yhdistyv\u00e4t, mutta avaruudessa sekoittuminen on paljon helpompaa. Painottomuusolosuhteissa tehdyt kokeet opettavat meille paljon t\u00e4st\u00e4 prosessista, mink\u00e4 ansiosta Maassa voidaan valmistaa parempia seoksia.<\/p>","protected":false},"excerpt":{"rendered":"<p>A typical stay on board the International Space Station (ISS) lasts about six months. But how do the crew members occupy their time while they are up there? Quite a [&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\/2009\/10\/de_winne_with_the_foam_stability_experiment2\/17897422-2-eng-GB\/De_Winne_with_the_Foam_Stability_experiment.jpg","esa_banner_description":"","esa_banner_credit":"NASA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2009\/10\/De_Winne_with_the_Foam_Stability_experiment2","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":[10,13,63],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1047","post","type-post","status-publish","format-standard","hentry","category-learn","category-life-in-space","category-living-in-space","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1047","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=1047"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1047\/revisions"}],"predecessor-version":[{"id":4816,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1047\/revisions\/4816"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=1047"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=1047"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=1047"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=1047"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=1047"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=1047"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=1047"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=1047"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=1047"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=1047"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}