{"id":2360,"date":"2017-08-16T00:06:09","date_gmt":"2017-08-15T22:06:09","guid":{"rendered":"http:\/\/www.zsvltava.cz\/fyzika\/?p=2360"},"modified":"2025-01-08T22:32:07","modified_gmt":"2025-01-08T21:32:07","slug":"zdimani-vody-ve-vesmiru","status":"publish","type":"post","link":"https:\/\/www.zsvltava.cz\/fyzika\/?p=2360","title":{"rendered":"\u017dd\u00edm\u00e1n\u00ed vody ve vesm\u00edru"},"content":{"rendered":"<div style=\"width: 540px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2360-1\" width=\"540\" height=\"540\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"\/fyzika\/wp-content\/uploads\/2017\/03\/711591534.mp4?_=1\" \/><a href=\"\/fyzika\/wp-content\/uploads\/2017\/03\/711591534.mp4\">\/fyzika\/wp-content\/uploads\/2017\/03\/711591534.mp4<\/a><\/video><\/div>\n<p>Source: NASA\/ISS\/CANADIAN SPACE AGENCY<\/p>\n<p>V tomto videu astronaut Hadfield \u017ed\u00edm\u00e1 mokr\u00fd ru\u010dn\u00edk uvnit\u0159 Mezin\u00e1rodn\u00ed vesm\u00edrn\u00e9 stanice a voda se chov\u00e1 jinak, ne\u017e jak jsme zvykl\u00ed na Zemi. Tekutina vyma\u010dk\u00e1v\u00e1 z l\u00e1tky a d\u00edky sv\u00e9mu <a href=\"\/fyzika\/?p=1703\">povrchov\u00e9mu nap\u011bt\u00ed<\/a> se vlastn\u011b p\u0159ichyt\u00ed k povrchu l\u00e1tky a Hadfieldov\u00fdm ruk\u00e1m jako \u017eel\u00e9.<\/p>\n<p>Ve stavu bezt\u00ed\u017ee, jak\u00fd panuje na Mezin\u00e1rodn\u00ed vesm\u00edrn\u00e9 stanici nebo v dal\u0161\u00edch prostor\u00e1ch mikrogravitace, se voda chov\u00e1 zcela odli\u0161n\u011b ne\u017e na Zemi. M\u00edsto toho, aby se tekutina rozt\u00e9kala a tvarovala podle povrchu n\u00e1doby, vytv\u00e1\u0159\u00ed vodn\u00ed kapky, kter\u00e9 se dr\u017e\u00ed pohromad\u011b d\u00edky povrchov\u00e9 tenzi. Tyto kapky maj\u00ed tendenci tvo\u0159it kulovit\u00e9 tvary, proto\u017ee povrchov\u00e1 tenze je p\u0159itahuje k sob\u011b a minimalizuje jejich povrch. Voda se tedy ve stavu bezt\u00ed\u017ee nerozt\u00e9k\u00e1, ale z\u016fst\u00e1v\u00e1 ve form\u011b mal\u00fdch, voln\u011b se pohybuj\u00edc\u00edch kapek, kter\u00e9 mohou snadno unikat a pohybovat se ve vzduchu, co\u017e \u010din\u00ed manipulaci s n\u00ed v mikrogravitaci v\u00fdzvou.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Source: NASA\/ISS\/CANADIAN SPACE AGENCY V tomto videu astronaut Hadfield \u017ed\u00edm\u00e1 mokr\u00fd ru\u010dn\u00edk uvnit\u0159 Mezin\u00e1rodn\u00ed vesm\u00edrn\u00e9 stanice a voda se chov\u00e1 jinak, ne\u017e jak jsme zvykl\u00ed &#8230;. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,13],"tags":[84,70,17,37],"class_list":["post-2360","post","type-post","status-publish","format-standard","hentry","category-vesmir","category-zajimavosti","tag-iss","tag-pokus","tag-video","tag-voda"],"_links":{"self":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/2360","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2360"}],"version-history":[{"count":0,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/2360\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2360"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}