{"id":4481,"date":"2026-02-22T12:25:09","date_gmt":"2026-02-22T12:25:09","guid":{"rendered":"https:\/\/www.europesays.com\/cz\/4481\/"},"modified":"2026-02-22T12:25:09","modified_gmt":"2026-02-22T12:25:09","slug":"skutecni-sampioni-olympijskych-her-technologove-ledu-a-snehu","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/cz\/4481\/","title":{"rendered":"Skute\u010dn\u00ed \u0161ampioni olympijsk\u00fdch her? Technologov\u00e9 ledu a\u00a0sn\u011bhu"},"content":{"rendered":"

Rychlobrusla\u0159 Metod\u011bj J\u00edlek by v\u00a0z\u00e1vod\u011b na 10\u00a0000\u00a0metr\u016f nezajel tak fantastick\u00fd v\u00fdsledek, kdyby \u0161el bruslit na led hokejist\u016f. Hodn\u011b by se natr\u00e1pil a\u00a0dost mo\u017en\u00e1 by si i\u00a0ztupil no\u017ee na brusl\u00edch, kter\u00e9 by se v\u00a0m\u011bk\u010d\u00edm ledu zakous\u00e1valy do plochy. Rychlobruslen\u00ed toti\u017e vy\u017eaduje absolutn\u011b jednolit\u00fd a\u00a0rovnom\u011brn\u00fd led s\u00a0minimem vzduchov\u00fdch bublin.<\/p>\n

Technici v\u00a0Mil\u00e1n\u011b m\u011bli situaci letos o\u00a0to slo\u017eit\u011bj\u0161\u00ed, \u017ee se v\u016fbec poprv\u00e9 z\u00e1vodilo na do\u010dasn\u00e9m kluzi\u0161ti. Kryt\u00fd ledov\u00fd ov\u00e1l pro rychlobrusla\u0159e tak museli vytvo\u0159it \u00fapln\u011b od nuly. Leda\u0159i v\u00a0\u010dele s\u00a0legendou z\u00a0\u0161esti p\u0159edchoz\u00edch olympijsk\u00fdch her Markem Messerem na n\u011bm pracovali u\u017e od konce \u0159\u00edjna.<\/p>\n

Na betonov\u00fd z\u00e1klad s\u00a0chlazen\u00edm a\u00a0izolac\u00ed postupn\u011b p\u0159il\u00e9vali vodu. Vrstvu po vrstv\u011b se pak dopracovali k\u00a0n\u011bkolika centimetr\u016fm ledu. Hadice p\u0159i takov\u00e9 pr\u00e1ci maj\u00ed p\u0159ehozen\u00e9 p\u0159es rameno a\u00a0p\u0159ipevn\u011bn\u00e9 na konstrukc\u00edch jako hokejky. Na vlastn\u00ed o\u010di tak vid\u00ed nerovnosti a\u00a0odchylky a\u00a0zkontroluj\u00ed opravdu ka\u017ed\u00fd centimetr ov\u00e1lu. A\u017e do posledn\u00ed chv\u00edle jde o\u00a0ru\u010dn\u00ed pr\u00e1ci, rolby p\u0159ijdou na \u0159adu a\u017e \u00fapln\u011b nakonec.<\/p>\n

<\/a><\/p>\n

Teplotu ledu dr\u017e\u00ed technologov\u00e9 kolem \u221210\u00a0\u00b0C. Na v\u00fdsledn\u00e9 pevnosti se v\u00fdznamn\u011b pod\u00edl\u00ed kvalita vody. Jak vysv\u011btloval mistr ledu Messer pro \u010d\u00ednsk\u00fd zpravodajsk\u00fd kan\u00e1l CGTN (video n\u00ed\u017ee), voda mus\u00ed b\u00fdt \u010dist\u00e1, proto\u017ee jak\u00e1koli \u0161p\u00edna ztup\u00ed b\u0159ity brusl\u00ed. Z\u00e1rove\u0148 ale voda nesm\u00ed b\u00fdt ani p\u0159ehnan\u011b p\u0159efiltrovan\u00e1 a\u00a0zbaven\u00e1 v\u0161ech miner\u00e1l\u016f, jinak by byl vytvo\u0159en\u00fd led p\u0159\u00edli\u0161 k\u0159ehk\u00fd.<\/p>\n

A\u00a0\u0159e\u0161\u00ed se i\u00a0vzduch kolem. Nad \u00farovn\u00ed ledu nesm\u00ed b\u00fdt tepleji ne\u017e 18\u00a0\u00b0C a\u00a0hlavn\u011b je pot\u0159eba, aby byl vzduch such\u00fd. Tomu dvakr\u00e1t nepom\u00e1haj\u00ed div\u00e1ci, kter\u00fdch v\u00a0hal\u00e1ch v\u00a0Mil\u00e1n\u011b sed\u011blo a\u017e 6000.\u00a0Ledov\u00ed technici tak museli uzp\u016fsobovat podm\u00ednky po ka\u017ed\u00e9m z\u00e1vod\u011b, co\u017e ostatn\u011b d\u011blaj\u00ed i\u00a0u m\u00e9n\u011b div\u00e1cky obl\u00edben\u00fdch z\u00e1vod\u016f. Teplotu ledu, vzduchu a\u00a0vlhkost uzp\u016fsobuj\u00ed na setiny stup\u0148\u016f t\u0159eba podle toho, jestli se jede sprint nebo dlouh\u00e1 tra\u0165.<\/p>\n

Nen\u00ed rink jako rink<\/p>\n

Komu se jako mal\u00e9mu nel\u00edbila p\u0159i sledov\u00e1n\u00ed hokeje pr\u00e1ce rolba\u0159e? Sed\u011bt, to\u010dit si volantem a\u00a0za sebou nech\u00e1vat kr\u00e1sn\u011b leskl\u00fd povrch. Jen\u017ee to je jen t\u0159e\u0161ni\u010dka na dortu. U\u00a0velk\u00fdch turnaj\u016f to jsou dvan\u00e1ctihodinov\u00e9 \u0161ichty, na olympi\u00e1d\u011b \u010dasto je\u0161t\u011b d\u00e9le, \u0159\u00edk\u00e1 hlavn\u00ed mistr ledu Don Moffatt<\/a>, pro kter\u00e9ho byla p\u0159\u00edprava hokejov\u00e9 plochy v\u00a0Mil\u00e1n\u011b p\u00e1tou olympijskou zku\u0161enost\u00ed.<\/p>\n

Hokejov\u00fd rink mus\u00ed b\u00fdt tvrd\u00fd, ale z\u00e1rove\u0148 pru\u017en\u00fd, aby odolal prudk\u00fdm kontakt\u016fm hr\u00e1\u010d\u016f i\u00a0puku. Standardn\u011b se jeho teplota dr\u017e\u00ed kolem \u22125\u00a0\u00b0C. Samotn\u00e1 p\u0159\u00edprava ledov\u00e9 plochy je pak v\u00a0mnoh\u00e9m podobn\u00e1 jako u\u00a0v\u00fd\u0161e popsan\u00e9ho rychlobruslen\u00ed. Opakovan\u00fdmi jemn\u00fdmi post\u0159iky vodou se vytvo\u0159\u00ed rovnom\u011brn\u00e1 konstrukce ledu bez prasklin. A\u017e na z\u00e1v\u011br se vrchn\u00ed vrstva se\u0159\u00edzne rolbou, co\u017e p\u0159iprav\u00ed led na fin\u00e1ln\u00ed \u00fapravu – zalit\u00ed teplou vodou.<\/p>\n

Ta se l\u00e9pe spoj\u00ed s\u00a0p\u0159edchoz\u00ed vrstvou, ne\u017e kdyby rolba na led napustila vodu studenou. V\u00a0t\u00e9 by vznikly mikrobublinky a\u00a0kluzi\u0161t\u011b by pak snadn\u011bji popraskalo. U\u00a0hokeje v\u0161e pochopiteln\u011b kon\u010d\u00ed vrta\u010dkou a\u00a0plynov\u00fdm ho\u0159\u00e1kem. S\u00a0nimi se do ledu zakotv\u00ed kol\u00edky na branky.<\/p>\n

<\/a><\/p>\n

Hokejist\u00e9 kluzi\u0161t\u011b \u010dasto sd\u00edlej\u00ed s\u00a0krasobrusla\u0159i. Ti pot\u0159ebuj\u00ed, jak vypl\u00fdv\u00e1 i\u00a0ze shrnuj\u00edc\u00edch informac\u00ed od BBC<\/a>, led o\u00a0n\u011bco teplej\u0161\u00ed ne\u017e hokejist\u00e9, ide\u00e1ln\u011b kolem \u22124\u00a0\u00b0C. Krasobrusla\u0159sk\u00fd led toti\u017e mus\u00ed b\u00fdt o\u00a0n\u011bco m\u011bk\u010d\u00ed, aby brusle l\u00e9pe dr\u017eely p\u0159i odrazech. Naopak horizont\u00e1ln\u00ed rovina plochy mus\u00ed b\u00fdt dokonal\u00e1, proto\u017ee i\u00a0drobn\u00fd nerovnom\u011brn\u00fd sklon m\u016f\u017ee rozhodit dynamiku skok\u016f.<\/p>\n

To se letos v\u00a0Mil\u00e1n\u011b podle fanou\u0161k\u016f stalo Iljovi Malininovi osudn\u00e9. I\u00a0kdy\u017e s\u00e1m po nepoveden\u00e9 voln\u00e9 j\u00edzd\u011b \u0159ekl, \u017ee to prost\u011b zpackal a\u00a0mluvil o\u00a0psychick\u00e9m tlaku, kter\u00e9mu jako dvojn\u00e1sobn\u00fd mistr sv\u011bta teprve ve\u00a021\u00a0letech \u010del\u00ed, div\u00e1ci se v\u00a0diskuz\u00edch houfn\u011b roz\u010dilovali, \u017ee Malinin upadl dvakr\u00e1t prakticky na stejn\u00e9m m\u00edst\u011b v\u00a0lev\u00e9m segmentu ledov\u00e9 plochy a\u00a0ur\u010dit\u011b bylo n\u011bco \u0161patn\u011b s\u00a0ledem.Led pro dal\u0161\u00ed discipl\u00edny<\/p>\n

Skute\u010dn\u011b vy\u0161\u0161\u00ed d\u00edv\u010d\u00ed je p\u0159\u00edprava ledu na curling. Je nejteplej\u0161\u00ed a\u00a0nejm\u011bk\u010d\u00ed, tak\u017ee v\u00a0podstat\u011b naprost\u00fdm opakem rychlobrusla\u0159sk\u00e9ho ledu. Jeho tajemstv\u00ed spo\u010d\u00edv\u00e1 podle olympijsk\u00e9ho webu<\/a> v\u00a0tzv. pebblingu. Ledov\u00e1 plocha se rovnom\u011brn\u011b pokryje tis\u00edci miniaturn\u00edmi kapi\u010dkami vody, kter\u00e9 po zamrznut\u00ed vytvo\u0159\u00ed jemnou strukturu hrbolk\u016f. Leda\u0159i toho doc\u00edl\u00ed rozpra\u0161ova\u010dem, jak\u00fd nos\u00ed na z\u00e1dech zahradn\u00edci, kdy\u017e na ja\u0159e post\u0159ikuj\u00ed stromy proti \u0161k\u016fdc\u016fm.<\/p>\n

Pr\u00e1v\u011b st\u0159\u00edd\u00e1n\u00ed hladk\u00e9ho ledu s\u00a0drobn\u00fdmi nerovnostmi ur\u010duje, jak dlouho curlingov\u00fd k\u00e1men pojede, jak se bude st\u00e1\u010det a\u00a0jak citliv\u011b bude reagovat na \u201esweeping\u201c od hr\u00e1\u010d\u016f\u00a0\u2013 divok\u00e9 zamet\u00e1n\u00ed ledu speci\u00e1ln\u00edm ko\u0161t\u011btem. Technici curlingov\u00fdch hal pat\u0159\u00ed k\u00a0nejpe\u010dliv\u011bj\u0161\u00edm specialist\u016fm, proto\u017ee zm\u011bny v\u00a0\u0159\u00e1du dvou t\u0159\u00ed kapi\u010dek na metr \u010dtvere\u010dn\u00ed mohou dramaticky zm\u011bnit charakter hry.<\/p>\n

Sv\u00e1 specifika m\u00e1 i\u00a0p\u0159\u00edprava ledov\u00fdch koryt pro boby, san\u011b a\u00a0skeleton. Na rozd\u00edl od discipl\u00edn po\u0159\u00e1dan\u00fdch na rovn\u00fdch ploch\u00e1ch sta\u010d\u00ed v\u00a0drah\u00e1ch ve tvaru U\u00a0p\u011bt centimetr\u016f ledu. Zato ale mus\u00ed vydr\u017eet rychlost a\u017e 140\u00a0km\/h a\u00a0p\u0159et\u00ed\u017een\u00ed 5G v\u00a0zat\u00e1\u010dk\u00e1ch, p\u0159ipom\u00edn\u00e1 Smithsonian Science Education Center<\/a>. Extr\u00e9mn\u011b pevn\u00fd povrch se vytvo\u0159\u00ed nan\u00e1\u0161en\u00edm ledov\u00e9 sm\u011bsi ve vrstv\u00e1ch. Technici se tak mus\u00ed um\u011bt oh\u00e1n\u011bt \u0161pachtl\u00ed jako \u0161tukat\u00e9\u0159i, aby n\u00e1sledn\u011b ledovou b\u0159e\u010dku se\u0161krabali do hladka a\u00a0oholili b\u0159itvou.<\/p>\n

50\u00a0odst\u00edn\u016f b\u00edl\u00e9<\/p>\n

Na ledu se odehr\u00e1v\u00e1 jen \u010dtvrtina discipl\u00edn zimn\u00edch olympijsk\u00fdch her. Zbytek se d\u011bje venku na sn\u011bhu. Vzhledem ke klimatick\u00fdm podm\u00ednk\u00e1m, ale i\u00a0m\u00edst\u016fm, kde se v\u00a0posledn\u00edch letech olympijsk\u00e9 hry konaly, se u\u017e podle serveru The Conversation<\/a> spol\u00e9h\u00e1 p\u0159edev\u0161\u00edm na sn\u00edh technick\u00fd, kter\u00fd se vyrob\u00ed sn\u011bhov\u00fdmi d\u011bly z\u00a0mrznouc\u00ed vody.<\/p>\n

<\/a><\/p>\n

Letos ho na z\u00e1vodn\u00edch trat\u00edch v\u00a0italsk\u00fdch Dolomitech bylo 85\u00a0%. Vy\u017eadovalo to p\u0159es dva\u00a0miliony kub\u00edk\u016f vody, co\u017e je pro p\u0159edstavu skoro polovina rybn\u00edka Ro\u017emberk nebo 960\u00a0olympijsk\u00fdch pades\u00e1timetrov\u00fdch baz\u00e9n\u016f, aby vzniklo 1,5\u00a0milionu kub\u00edk\u016f sn\u011bhu. R\u016fzn\u011b velk\u00e9ho a\u00a0r\u016fzn\u011b zmrzl\u00e9ho.<\/p>\n

Do hry tady vstupuje granulometrie. M\u011b\u0159en\u00ed velikosti zrn je z\u00e1sadn\u00ed pro jednotliv\u00e9 sporty. Ty \u00fapln\u011b nejmen\u0161\u00ed krystalky o\u00a0pr\u016fm\u011bru 0,1\u20130,4\u00a0mm, kter\u00e9 vytvo\u0159\u00ed velmi tvrd\u00fd a\u00a0pevn\u00fd sn\u00edh, pot\u0159ebuj\u00ed extr\u00e9mn\u011b rychl\u00e9 discipl\u00edny, jako je super-G. O\u00a0n\u011bco v\u011bt\u0161\u00ed zrnka a\u00a0tedy pru\u017en\u011bj\u0161\u00ed sn\u00edh se vytv\u00e1\u0159\u00ed pro sjezd, slalom a\u00a0skoky na ly\u017e\u00edch.<\/p>\n

Sn\u00edh na sjezdovce se upravuje zhut\u0148ov\u00e1n\u00edm, fr\u00e9zov\u00e1n\u00edm, provzdu\u0161n\u011bn\u00edm a\u00a0zavodn\u011bn\u00edm. To v\u0161echno um\u00ed modern\u00ed rolby. Na jejich z\u00e1\u010f se m\u016f\u017ee p\u0159imontovat li\u0161ta s\u00a0vysokotlak\u00fdmi tryskami, kter\u00e9 vst\u0159ikuj\u00ed vodu do hloubky 30\u00a0a\u017e 40\u00a0cm. Takzvan\u00e1 injekt\u00e1\u017e pak m\u00e1 za n\u00e1sledek hust\u0161\u00ed a\u00a0m\u00e9n\u011b por\u00e9zn\u00ed sn\u00edh. P\u0159esn\u011b takov\u00fd, jak\u00fd vydr\u017e\u00ed rychlosti p\u0159es 120\u00a0kilometr\u016f za hodinu a\u00a0agresivn\u00ed \u0159ez\u00e1n\u00ed oblouk\u016f.<\/p>\n

Velmi pevn\u00fd sn\u00edh je specialitou skok\u016f na ly\u017e\u00edch. Dr\u00e1ha na m\u016fstc\u00edch je skoro a\u017e ledov\u00e1 plocha. A\u00a0jak u\u017e v\u00edme z\u00a0rychlobruslen\u00ed, d\u016fle\u017eit\u00e1 je n\u00edzk\u00e1 vlhkost. D\u00edky n\u00ed skokan\u016fm ly\u017ee ve sjezdu svi\u0161t\u00ed a\u00a0nelep\u00ed se. Dos\u00e1hnout toho lze vcelku p\u0159ekvapiv\u011b fukary na list\u00ed, kter\u00e9 jdou do akce po ka\u017ed\u00e9m z\u00e1vodn\u00edkovi.<\/p>\n

Pod m\u016fstkem ale zase mus\u00ed b\u00fdt sn\u00edh m\u011bk\u010d\u00ed, aby byl bezpe\u010dn\u011bj\u0161\u00ed a\u00a0skokani v\u016fbec m\u011bli \u0161anci ztlumit energii p\u0159i dopadu.<\/p>\n

Nebezpe\u010dn\u011bj\u0161\u00ed z\u00e1vod\u011bn\u00ed ne\u017e d\u0159\u00edve?<\/p>\n

Discipl\u00edny jako b\u011bh na ly\u017e\u00edch \u010di biatlon pot\u0159ebuj\u00ed vyrovnanou kombinaci mezi skluznost\u00ed a\u00a0odrazem. Jejich sn\u00edh tak mus\u00ed m\u00edt granulometrii, kter\u00e1 se p\u0159izp\u016fsob\u00ed aktu\u00e1ln\u00ed teplot\u011b a\u00a0vlhkosti, ale v\u00a0z\u00e1sad\u011b se vytv\u00e1\u0159ej\u00ed krystaly o\u00a0pr\u016fm\u011bru 0,5\u20131\u00a0mm, aby se zaru\u010dila p\u0159ilnavost spole\u010dn\u011b s\u00a0rychlost\u00ed. Pro perfektn\u00ed j\u00edzdu jsou tu mnohem d\u016fle\u017eit\u011bj\u0161\u00ed t\u00fdmov\u00ed servismani, kte\u0159\u00ed zvl\u00e1dnou doladit ly\u017ee z\u00e1vodn\u00edk\u016f na rozli\u010dn\u00e9 podm\u00ednky sn\u011bhu a\u00a0po\u010das\u00ed.<\/p>\n

Nejv\u011bt\u0161\u00ed zrnka sn\u011bhu si m\u016f\u017eou dovolit freestyle discipl\u00edny. P\u0159esto\u017ee se U-rampa nebo skok\u00e1nky v\u00a0televizi jev\u00ed jako jednolit\u00e1 tvrd\u00e1 plocha, tvaruj\u00ed se z\u00a0m\u011bk\u010d\u00edho sn\u011bhu. Mus\u00ed b\u00fdt soudr\u017en\u00fd, ale nikoliv tvrd\u00fd jako led, aby dopady p\u0159i snowboardov\u00fdch a\u00a0ly\u017ea\u0159sk\u00fdch tric\u00edch nebyly destruktivn\u00ed. Technici tak kontroluj\u00ed teplotn\u00ed profil i\u00a0objemovou hmotnost sn\u011bhu v\u00a0ka\u017ed\u00e9m segmentu trat\u011b.<\/p>\n

<\/a><\/p>\n

I tak se ale u\u017e n\u011bkte\u0159\u00ed sportovci ohrazovali, \u017ee z\u00e1vod\u011bn\u00ed se v\u00a0posledn\u00ed dob\u011b stalo v\u00edce nebezpe\u010dn\u00fdm a\u00a0nep\u0159edv\u00eddateln\u00fdm, t\u0159eba ve zpr\u00e1v\u011b mezin\u00e1rodn\u00edch akademik\u016f<\/a> vydan\u00e9 p\u0159i p\u0159\u00edle\u017eitosti minul\u00fdch zimn\u00edch her v\u00a0Pekingu, kter\u00e9 se odehr\u00e1valy ze 100\u00a0% na technick\u00e9m sn\u011bhu, co\u017e tehdy zmi\u0148oval i\u00a0web Scientific American<\/a>. M\u00e1 jin\u00e9 vlastnosti ne\u017e sn\u00edh p\u0159\u00edrodn\u00ed. Tvo\u0159\u00ed ho voda z\u00a090\u00a0%, kde\u017eto nad\u011blen\u00ed z\u00a0oblohy m\u00e1 pom\u011br vody ke vzduchu 70\u00a0ku 30.\u00a0Technick\u00fd sn\u00edh je tak mnohem m\u00e9n\u011b vzdu\u0161n\u00fd, co\u017e d\u011bl\u00e1 dopady mnohem tvrd\u0161\u00ed.<\/p>\n

Opravdov\u00ed specialist\u00e9 pracuj\u00ed na z\u00e1vodech v\u00a0boul\u00edch. U\u00a0nich je nutn\u00e9, aby byly pravideln\u00e9 v\u00a0p\u0159esn\u00e9m intervalu a\u00a0z\u00e1vodn\u00edci m\u011bli stabiln\u00ed rytmus j\u00edzdy. Taky mus\u00ed b\u00fdt dostate\u010dn\u011b tvrd\u00e9, aby se nerozb\u00edjely b\u011bhem z\u00e1vodu. Zku\u0161en\u00ed shape\u0159i (\u201etvarova\u010di\u201c) boule formuj\u00ed ru\u010dn\u011b, pou\u017e\u00edvaj\u00ed lopaty, hr\u00e1b\u011b, speci\u00e1ln\u00ed \u0161krabky a\u00a0n\u011bkde i\u00a0formovac\u00ed bedn\u011bn\u00ed. Tvrdosti doc\u00edl\u00ed postupn\u00fdm udus\u00e1v\u00e1n\u00edm a\u00a0zavod\u0148ov\u00e1n\u00edm povrchu, tak jako jejich kolegov\u00e9 z\u00a0jin\u00fdch sport\u016f.<\/p>\n

Budoucnost ledu a\u00a0sn\u011bhu<\/p>\n

Jak se zvy\u0161uj\u00ed n\u00e1roky na sportovce, stoup\u00e1 i\u00a0o\u010dek\u00e1v\u00e1n\u00ed od sn\u011bhu a\u00a0ledu v\u00a0\u010dasech, kdy se p\u0159irozen\u00e9ho sn\u011bhu u\u017e nedost\u00e1v\u00e1. Samotn\u00e1 Cortina d’Ampezzo zaznamenala od sv\u00e9ho prvn\u00edho hostitelstv\u00ed v\u00a0roce 1956\u00a0n\u00e1r\u016fst pr\u016fm\u011brn\u00e9 \u00fanorov\u00e9 teploty o\u00a03,6\u00a0stupn\u011b Celsia a\u00a0o 41\u00a0dn\u00ed m\u00e9n\u011b mrazu ro\u010dn\u011b, upozornil port\u00e1l The Tufts Daily<\/a>.<\/p>\n

\u0158e\u0161en\u00ed pro nedostatek sn\u011bhu u\u017e m\u00e1me. Ale pro led? Mo\u017en\u00e1 by \u0161el nahradit plastem. Ano, \u010dtete spr\u00e1vn\u011b. V\u011bdci z\u00a0americk\u00e9 Purdue University a\u00a0\u0160v\u00fdcarsk\u00e9ho feder\u00e1ln\u00edho technologick\u00e9ho institutu v\u00a0Lausanne (EPFL) vymysleli technologii, kdy ultrahust\u00fd polyethylen m\u016f\u017ee fungovat jako povrch bobov\u00fdch, skeletonov\u00fdch a\u00a0s\u00e1\u0148ka\u0159sk\u00fdch drah. Materi\u00e1l v\u00a0laboratorn\u00edch testech realisticky napodobuje t\u0159en\u00ed i\u00a0rychlostn\u00ed profil ledu, a\u00a0to p\u0159i mnohon\u00e1sobn\u011b ni\u017e\u0161\u00edch n\u00e1kladech a\u00a0bez pot\u0159eby energeticky n\u00e1ro\u010dn\u00e9ho chlazen\u00ed.<\/p>\n

Plastov\u00e9 dr\u00e1hy by podle v\u00fdzkumu st\u00e1ly jen zlomek \u010d\u00e1stky oproti ledov\u00fdm a\u00a0m\u011bly a\u017e o\u00a070\u00a0% ni\u017e\u0161\u00ed ekologickou z\u00e1t\u011b\u017e. Je\u0161t\u011b je ale nutn\u00e9 detailn\u011b prozkoumat \u0159\u00edzen\u00ed san\u00ed v\u00a0zat\u00e1\u010dk\u00e1ch a\u00a0chov\u00e1n\u00ed plastu p\u0159i vy\u0161\u0161\u00edch teplot\u00e1ch. Pokud by v\u0161echno klaplo, mohly by se zimn\u00ed sporty otev\u0159\u00edt nov\u00fdm talent\u016fm. A\u00a0pak bychom se t\u0159eba do\u010dkali filmov\u00e9ho zpracov\u00e1n\u00ed \u201eKokos\u016f na plastu\u201c.<\/p>\n

<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Rychlobrusla\u0159 Metod\u011bj J\u00edlek by v\u00a0z\u00e1vod\u011b na 10\u00a0000\u00a0metr\u016f nezajel tak fantastick\u00fd v\u00fdsledek, kdyby \u0161el bruslit na led hokejist\u016f. Hodn\u011b…\n","protected":false},"author":2,"featured_media":4482,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[29,1906,147,364,422,25,1355,257,94,93,2812,3411,882,3410,77],"class_list":{"0":"post-4481","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-sport","8":"tag-hokej","9":"tag-led","10":"tag-letni-olympijske-hry-loh","11":"tag-lyzovani","12":"tag-olympiada","13":"tag-olympiada-2026-v-milane-a-cortine","14":"tag-rychlobrusleni","15":"tag-snih","16":"tag-sport","17":"tag-sports","18":"tag-studie","19":"tag-technicky-snih","20":"tag-technologie","21":"tag-umely-snih","22":"tag-veda"},"share_on_mastodon":{"url":"","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/4481","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=4481"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/4481\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/4482"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=4481"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=4481"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=4481"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}