Keby sme mohli cestova\u0165 v \u010dase, bolo by mo\u017en\u00e9 zabi\u0165 Hitlera e\u0161te pred jeho n\u00e1stupom k moci alebo zabr\u00e1ni\u0165 roz\u0161\u00edreniu nov\u00e9ho koronav\u00edrusu?
\nT\u00e1to ot\u00e1zka znie ako n\u00e1met pre hollywoodske tvorcov, av\u0161ak mnoh\u00ed vedci sa \u0148ou v\u00e1\u017ene zaoberaj\u00fa. Z posledn\u00fdch v\u00fdsledkov ich pr\u00e1ce vypl\u00fdva, \u017ee n\u00e1vrat do minulosti je teoreticky mo\u017en\u00fd, zmena udalost\u00ed ale nie.
\nV\u00fdskum mo\u017enosti cestovania v \u010dase sa odv\u00edja od objavu Alberta Einsteina, ktor\u00fd vo svojej dobe zistil, \u017ee \u010das nie je kon\u0161tantou, ale z\u00e1vis\u00ed na r\u00fdchlosti, akou sa vo vesm\u00edre pohybujeme. Ak by ste sa vydali na v\u00fdlet k nejakej vzdialenej hviezde a raketa by vyvinula r\u00fdchlos\u0165 bl\u00ed\u017eiacou sa r\u00fdchlosti svetla, po n\u00e1vrate domov by ste st\u00e1le vyzerali rovnako, zatia\u013e \u010do z va\u0161ich s\u00farodencov a priate\u013eov by u\u017e boli dedkovia a babi\u010dky.<\/p>\n
T\u00fdmto sp\u00f4sobom by bolo mo\u017en\u00e9 prenies\u0165 sa v \u010dase dopredu. Einstein rozvinul aj my\u0161lienku vr\u00e1ti\u0165 sa v \u0148om sp\u00e4\u0165. Predpokladal, \u017ee v \u010dasopriestore existuj\u00fa tzv. \u010cervie diery, \u010do s\u00fa oblasti zakriven\u00e9 tak, \u017ee sp\u00e1jaj\u00fa dva vzdialen\u00e9 body a \u010dastica sa v nich m\u00f4\u017ee navr\u00e1ti\u0165 do svojej predch\u00e1dzaj\u00facej poz\u00edcie v skor\u0161om \u010dase.<\/p>\n
Probl\u00e9mom v\u0161ak zost\u00e1va, \u017ee simul\u00e1cia \u010dervej diery v kombin\u00e1cii s potrebnou energiou a r\u00fdchlos\u0165ou zatia\u013e nie je v \u013eudsk\u00fdch technick\u00fdch mo\u017enostiach. T\u00edm veden\u00fd austr\u00e1lskym profesorom fyziky Timom Ralphom v\u0161ak vykonal experiment aspo\u0148 s fot\u00f3nmi. Dok\u00e1zal pritom, \u017ee n\u00e1vrat svetelnej \u010dastice do minulosti nie je sci-fi, ale mo\u017eno realita. (Zdroj: www.businessinsider.com.au, j\u00fan 2014)<\/p>\n
Ak by sa \u010dlovek mohol pohybova\u0165 rovnako r\u00fdchlo ako fot\u00f3n a sledoval by zakriven\u00fa dr\u00e1hu umelo vytvoren\u00e9 \u010dervej diery, teoreticky by sa mohol ocitn\u00fa\u0165 na niektorom z predch\u00e1dzaj\u00facich bodov svojho \u017eivota, a dokonca sa tu stretn\u00fa\u0165 so svoj\u00edm mlad\u0161\u00edm „ja“. Vedci ale rie\u0161ia z\u00e1sadn\u00fd paradox, vyjadren\u00fd jednoduch\u00fdm pr\u00edkladom: ak by ste pri n\u00e1v\u0161teve minulosti ne\u0161\u0165astnou n\u00e1hodou zabili svojho dedka, potom by ste sa nemohli narodi\u0165, a teda by ste ani nemohli cestova\u0165 v \u010dase a zabi\u0165 dedka.<\/p>\n
Doktor filozofie z univerzity v Birminghame zast\u00e1va n\u00e1zor, \u017ee cestovate\u013e v \u010dase nebude ma\u0165 mo\u017enos\u0165 do toku dej\u00edn nijako zasahova\u0165: „Mo\u017eno zastrel\u00edte nespr\u00e1vnu osobu alebo zmen\u00edte n\u00e1zor. Alebo naozaj zastrel\u00edte svojho domnel\u00e9ho dedka, ale vyjde najavo, \u017ee babi\u010dka mala v\u00e1\u0161ho otecka s p\u00e1nom, ktor\u00fd v ulici rozv\u00e1\u017eal mlieko. “<\/p>\n
Austr\u00e1lsky fyzik z univerzity v Queenslande Fabio Costa d\u00e1va Effinghamovi za pravdu. Pod\u013ea neho nie je napr\u00edklad mo\u017en\u00e9, aby sa naplnilo \u017eelanie mnoh\u00fdch teoretikov zabi\u0165 sp\u00e4tne Hitlera. „Nie je to mo\u017en\u00e9, preto\u017ee sa to nestalo,“ uviedol Costa.
\nRovnako tak by jednotlivec \u0165a\u017eko zabr\u00e1nil roz\u0161\u00edreniu Covid-19. Predstavte si, \u017ee by ste v roku 2019 pobehovali po wuhanskej tr\u017enicu a sna\u017eili sa miestnym \u00faradom vysvetli\u0165, \u017ee sa tu \u013eudia \u010doskoro nakazia smrte\u013en\u00fdm v\u00edrusom, ktor\u00fd paralyzuje svet. Veril by v\u00e1m niekto?<\/p>\n
„Matematick\u00e9 v\u00fdpo\u010dty n\u00e1m uk\u00e1zali, \u017ee \u010dasopriestor je schopn\u00fd situ\u00e1cia prisp\u00f4sobi\u0165 tak, aby sa zabr\u00e1nilo paradoxom,“ uviedol Cost\u016fv \u0161tudent Germain Tobar, ktor\u00fd na dan\u00fa t\u00e9mu vypracoval vlastn\u00fa \u0161t\u00fadiu. Pre oby\u010dajn\u00e9ho \u010dloveka, ktor\u00fd si z matematiky pam\u00e4t\u00e1 maxim\u00e1lne rovnice o jednej nezn\u00e1mej, to znie ako \u0161pekul\u00e1cie o „z\u00e1sahu vy\u0161\u0161ej moci“, respekt\u00edve maju predstavu, ze na cestovanie v \u010dase im posta\u010d\u00ed vhodne upraven\u00fd konvektomat<\/strong><\/span><\/a>. T\u00fdm by sme sa v\u0161ak dostali k \u010fal\u0161ej samostatnej ve\u013ekej kapitole teoretickej fyziky, ktorou s\u00fa paraleln\u00e9 svety. K uspokojiv\u00fdm odpovediam na ot\u00e1zky o ich existencii e\u0161te povedie dlh\u00e1 cesta a k vyn\u00e1lezu stroja \u010dasu bude e\u0161te dlh\u0161ia. Zatia\u013e sa mus\u00edme uspokoji\u0165 so z\u00e1verom, \u017ee pohyb do minulosti mo\u017en\u00fd je, ale \u010dasopriestor si s\u00e1m nadiktuje, ako bude na\u0161a n\u00e1v\u0161teva hist\u00f3rie prebieha\u0165.<\/p>\n <\/p>\n Zdroj: https:\/\/www.dotyk.cz\/<\/p>\n Viacej inform\u00e1ci\u00ed tu: https:\/\/bit.ly\/3E9SR8w<\/p>\n Foto: depositphotos<\/p>\n","protected":false},"excerpt":{"rendered":" Keby sme mohli cestova\u0165 v \u010dase, bolo by mo\u017en\u00e9 zabi\u0165 Hitlera e\u0161te pred jeho n\u00e1stupom k moci alebo zabr\u00e1ni\u0165 roz\u0161\u00edreniu nov\u00e9ho koronav\u00edrusu? T\u00e1to ot\u00e1zka znie ako n\u00e1met pre hollywoodske tvorcov, av\u0161ak mnoh\u00ed vedci sa \u0148ou v\u00e1\u017ene zaoberaj\u00fa. Z posledn\u00fdch v\u00fdsledkov ich pr\u00e1ce vypl\u00fdva, \u017ee n\u00e1vrat do minulosti je teoreticky mo\u017en\u00fd, zmena udalost\u00ed ale nie. V\u00fdskum […]<\/p>\n","protected":false},"author":7,"featured_media":88918,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,43],"tags":[],"class_list":["post-88917","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-real-estate","category-technologie","eq-blocks"],"_links":{"self":[{"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/posts\/88917","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/comments?post=88917"}],"version-history":[{"count":1,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/posts\/88917\/revisions"}],"predecessor-version":[{"id":88919,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/posts\/88917\/revisions\/88919"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/media\/88918"}],"wp:attachment":[{"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/media?parent=88917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/categories?post=88917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/tags?post=88917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nPred kolegami z bran\u017ee je v\u0161ak Tobar schopn\u00fd svoju te\u00f3riu vedecky obh\u00e1ji\u0165.
\nPotom je tu v\u0161ak e\u0161te jedna mo\u017enos\u0165, zrozumite\u013ene vysvetlen\u00e1 slovami americkej astrofyzi\u010dky Janny Levin: „Mo\u017eno, ak sa z ak\u00e9hoko\u013evek d\u00f4vodu rozhodnete vyda\u0165 sa sp\u00e4\u0165 a zabi\u0165 svojho dedka, svet sa v ten moment rozdel\u00ed do dvoch odli\u0161n\u00fdch real\u00edt. Aj ke\u010f v\u00e1m bude pripada\u0165, \u017ee ste zmenili minulos\u0165, v skuto\u010dnosti ste ju nezmenili, len ste vytvorili nov\u00fd pr\u00fad hist\u00f3rie. “
\n(Zdroj: www.nationalgeographic.com, december 2020)<\/p>\n