{"id":2192,"date":"2026-02-19T21:35:11","date_gmt":"2026-02-19T21:35:11","guid":{"rendered":"https:\/\/www.europesays.com\/cz\/2192\/"},"modified":"2026-02-19T21:35:11","modified_gmt":"2026-02-19T21:35:11","slug":"je-mozne-cestovat-casem-vedci-zpochybnili-linearitu-casu","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/cz\/2192\/","title":{"rendered":"Je mo\u017en\u00e9 cestovat \u010dasem? V\u011bdci zpochybnili linearitu \u010dasu"},"content":{"rendered":"<p data-start=\"314\" data-end=\"615\">V\u011bdci z Technick\u00e9 univerzity v Darmstadtu se zam\u011b\u0159ili na to, jak se chov\u00e1 \u010das uvnit\u0159 ur\u010dit\u00fdch materi\u00e1l\u016f. V\u00fdzkum Tilla Bohmera a Thomase Blochowiczse ukazuje, \u017ee plynut\u00ed \u010dasu nemus\u00ed b\u00fdt na mikroskopick\u00e9 \u00farovni tak jednozna\u010dn\u00e9, jak jsme zvykl\u00ed vn\u00edmat v b\u011b\u017en\u00e9m sv\u011bt\u011b.<\/p>\n<p data-start=\"617\" data-end=\"941\">Kl\u00ed\u010dem <a href=\"https:\/\/phys.org\/news\/2024-01-physicists-phenomenon-aging-materials.html\" rel=\"nofollow noopener\" target=\"_blank\">se stalo <\/a>oby\u010dejn\u00e9 sklo. Na rozd\u00edl od v\u011bt\u0161iny pevn\u00fdch l\u00e1tek nem\u00e1 jeho vnit\u0159n\u00ed struktura pravideln\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed. Molekuly nejsou pevn\u011b \u201ezamrzl\u00e9\u201c na sv\u00fdch m\u00edstech, ale neust\u00e1le se velmi pomalu p\u0159eskupuj\u00ed. P\u0159ech\u00e1zej\u00ed do nov\u00fdch poloh, vytv\u00e1\u0159ej\u00ed nov\u00e9 konfigurace a cel\u00fd syst\u00e9m se tak jemn\u011b prom\u011b\u0148uje i dlouho po sv\u00e9m vzniku.<\/p>\n<p data-start=\"943\" data-end=\"1207\">Pr\u00e1v\u011b tyto drobn\u00e9 zm\u011bny v\u011bdci sledovali pomoc\u00ed rozpt\u00fdlen\u00e9ho laserov\u00e9ho paprsku. Extr\u00e9mn\u011b citliv\u00e9 kamery zaznamen\u00e1valy mikroskopick\u00e9 fluktuace molekul, kter\u00e9 se tla\u010d\u00ed, odd\u011bluj\u00ed a znovu spojuj\u00ed. Bez specializovan\u00e9 techniky by tyto pohyby nebylo mo\u017en\u00e9 v\u016fbec zachytit.<\/p>\n<p>Nejednozna\u010dn\u00e9 procesy\u00a0<\/p>\n<p data-start=\"1209\" data-end=\"1543\">Zaj\u00edmav\u00e9 je, \u017ee z fyzik\u00e1ln\u00edho hlediska <a href=\"https:\/\/thedebrief.org\/first-ever-successful-measurement-of-material-aging-in-glass-reveals-unexpected-time-reversibility\/\" rel=\"nofollow noopener\" target=\"_blank\">nen\u00ed v\u017edy<\/a> mo\u017en\u00e9 jednozna\u010dn\u011b ur\u010dit, zda sledovan\u00fd proces \u201eb\u011b\u017e\u00ed vp\u0159ed\u201c, nebo \u201evzad\u201c. V ur\u010dit\u00fdch podm\u00ednk\u00e1ch se toti\u017e oba sm\u011bry mohou jevit jako rovnocenn\u00e9. Nejde o n\u00e1vrat do minulosti v lidsk\u00e9m m\u011b\u0159\u00edtku, ale o nen\u00e1padnou vlastnost materi\u00e1lu, kter\u00e1 zpochyb\u0148uje na\u0161e intuitivn\u00ed p\u0159edstavy o line\u00e1rn\u00edm \u010dase.<\/p>\n<p data-start=\"1545\" data-end=\"1822\" data-is-last-node=\"\" data-is-only-node=\"\">Tento objev sice neznamen\u00e1, \u017ee se brzy do\u010dk\u00e1me stroj\u016f \u010dasu, ale otev\u00edr\u00e1 nov\u00e9 ot\u00e1zky o tom, jak \u010das funguje na mikroskopick\u00e9 \u00farovni. Ukazuje, \u017ee i v b\u011b\u017en\u00fdch materi\u00e1lech kolem n\u00e1s se mohou skr\u00fdvat procesy, kter\u00e9 nejsou tak jednozna\u010dn\u00e9, jak se na prvn\u00ed pohled zd\u00e1.<\/p>\n","protected":false},"excerpt":{"rendered":"V\u011bdci z Technick\u00e9 univerzity v Darmstadtu se zam\u011b\u0159ili na to, jak se chov\u00e1 \u010das uvnit\u0159 ur\u010dit\u00fdch materi\u00e1l\u016f. V\u00fdzkum&hellip;\n","protected":false},"author":2,"featured_media":2193,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[2039,2040,2038,2037,74,73,78,75,77,76],"class_list":{"0":"post-2192","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-veda-a-technika","8":"tag-cas","9":"tag-cestovani-casem","10":"tag-clanek","11":"tag-nedd","12":"tag-science","13":"tag-science-technology","14":"tag-technika","15":"tag-technology","16":"tag-veda","17":"tag-veda-a-technika"},"share_on_mastodon":{"url":"","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/2192","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/comments?post=2192"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/2192\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/2193"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=2192"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=2192"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=2192"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}