[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.greka.cz\/je-cestovani-casem-realne\/#Article","mainEntityOfPage":"https:\/\/www.greka.cz\/je-cestovani-casem-realne\/","headline":"Je cestov\u00e1n\u00ed \u010dasem re\u00e1ln\u00e9?","name":"Je cestov\u00e1n\u00ed \u010dasem re\u00e1ln\u00e9?","description":"O cestov\u00e1n\u00ed \u010dasem sn\u00ed lid\u00e9 ji\u017e od prad\u00e1vna. Nen\u00ed tedy divu, \u017ee se stalo n\u00e1m\u011btem nejen mnoha legend a p\u0159\u00edb\u011bh\u016f (sta\u010d\u00ed si jen vzpomenout na ty, kdy \u010dlov\u011bk ve\u0161el do jeskyn\u011b, a kdy\u017e z\u00a0n\u00ed vy\u0161el, zjistil, \u017ee mezit\u00edm uplynula cel\u00e1 desetilet\u00ed), ale pozd\u011bji i v\u011bdeckofantastick\u00e9 literatury. Typick\u00fdm p\u0159\u00edkladem je zde Stroj \u010dasu od H. G. […]","datePublished":"2023-08-08","dateModified":"2024-01-08","author":{"@type":"Person","@id":"https:\/\/www.greka.cz\/author\/#Person","name":"","url":"https:\/\/www.greka.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/afe3e9c307ddf0b756c397ad75c6ecdba1f9da628b10651fe33a13bba6407ccd?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/afe3e9c307ddf0b756c397ad75c6ecdba1f9da628b10651fe33a13bba6407ccd?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"greka.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.greka.cz\/wp-content\/uploads\/art479334_4x3_20261008_141152_XKa6PF.jpg","url":"https:\/\/www.greka.cz\/wp-content\/uploads\/art479334_4x3_20261008_141152_XKa6PF.jpg","height":0,"width":0},"url":"https:\/\/www.greka.cz\/je-cestovani-casem-realne\/","about":["V\u011bda"],"wordCount":399,"articleBody":"\tO cestov\u00e1n\u00ed \u010dasem sn\u00ed lid\u00e9 ji\u017e od prad\u00e1vna. Nen\u00ed tedy divu, \u017ee se stalo n\u00e1m\u011btem nejen mnoha legend a p\u0159\u00edb\u011bh\u016f (sta\u010d\u00ed si jen vzpomenout na ty, kdy \u010dlov\u011bk ve\u0161el do jeskyn\u011b, a kdy\u017e z\u00a0n\u00ed vy\u0161el, zjistil, \u017ee mezit\u00edm uplynula cel\u00e1 desetilet\u00ed), ale pozd\u011bji i v\u011bdeckofantastick\u00e9 literatury. Typick\u00fdm p\u0159\u00edkladem je zde Stroj \u010dasu od H. G. Wellse, tedy autora, kter\u00fd \u017eil ve viktori\u00e1nsk\u00e9 Anglii.\t\tNen\u00ed tedy divu, \u017ee si i v\u011bdci l\u00e1mou hlavu s\u00a0ot\u00e1zkou, zda jsou cesty \u010dasem re\u00e1ln\u011b mo\u017en\u00e9, a\u0165 u\u017e do minulosti, budoucnosti \u010di ob\u011bma sm\u011bry. Zat\u00edm samoz\u0159ejm\u011b pracuj\u00ed pouze v\u00a0teoretick\u00e9 rovin\u011b, av\u0161ak pokud by usp\u011bli, bylo by jen ot\u00e1zkou \u010dasu, kdy by bylo zavedeno v\u00a0praxi.\tJe tedy rozhodn\u011b na m\u00edst\u011b se pt\u00e1t, jak moc je tato mo\u017enost re\u00e1ln\u00e1. Ukazuje se v\u0161ak, \u017ee pos\u00edl\u00e1n\u00ed lid\u00ed \u010dasem v\u00a0nejbli\u017e\u0161\u00ed dob\u011b rozhodn\u011b nehroz\u00ed. K\u00a0tomu by toti\u017e bylo pot\u0159eba p\u0159ekonat rychlost sv\u011btla, co\u017e prozat\u00edm p\u0159edstavuje bari\u00e9ru, se kterou si nedovedeme poradit.\tProbl\u00e9mem tak\u00e9 je, \u017ee lidsk\u00e9 t\u011blo by takovou rychlost zkr\u00e1tka a dob\u0159e nevydr\u017eelo. Ov\u0161em i pokud bychom se j\u00ed p\u0159ibl\u00ed\u017eili, nap\u0159\u00edklad na 99 %, pak by byla cesta \u010dasem relativn\u011b mo\u017en\u00e1. Princip je jednoduch\u00fd \u2013 \u010d\u00edm rychleji se pohybujeme, t\u00edm rychleji kolem n\u00e1s plyne i \u010das. P\u0159eci jen, ka\u017ed\u00fd pohyb p\u0159edstavuje zak\u0159iven\u00ed \u010dasoprostoru. Co by to tedy pro n\u00e1s znamenalo?\tPokud by se hypotetick\u00fd cestovatel vydal 99% rychlost\u00ed sv\u011btla, pak by \u010das kolem n\u011bj ve skute\u010dnosti plynul mnohem pomaleji ne\u017e pro ostatn\u00ed. Pokud by se tedy vr\u00e1til nap\u0159\u00edklad (z jeho pohledu) po roce, zjistil by, \u017ee na Zemi uplynula mnohem del\u0161\u00ed doba.\tI tato forma cesty \u010dasem je n\u00e1m v\u0161ak prozat\u00edm uzav\u0159ena. Nem\u00e1me toti\u017e technologie, kter\u00fdmi bychom mohli n\u011bco takov\u00e9ho uskute\u010dnit, nehled\u011b na to, jak zabezpe\u010dit, aby cestovatel b\u011bhem t\u00e9 doby nep\u0159i\u0161el d\u00edky t\u011bmto rychlostem o \u017eivot.\tZd\u00e1 se tedy, \u017ee cesty \u010dasem prozat\u00edm z\u016fstanou jen v\u00a0hlav\u00e1ch autor\u016f knih a film\u016f. A to je mo\u017en\u00e1 dob\u0159e \u2013 kdo v\u00ed, jak\u00e9 \u0161kody bychom t\u00edm mohli nap\u00e1chat.                                                                                                                                                                                                                                                                                                                                                                                                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