[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.zpraku.cz\/jak-mohli-lide-jiz-drive-vedez-ze-je-zeme-kulata\/#Article","mainEntityOfPage":"https:\/\/www.zpraku.cz\/jak-mohli-lide-jiz-drive-vedez-ze-je-zeme-kulata\/","headline":"Jak mohli lid\u00e9 ji\u017e d\u0159\u00edve v\u011bd\u011b\u017e, \u017ee je Zem\u011b kulat\u00e1?","name":"Jak mohli lid\u00e9 ji\u017e d\u0159\u00edve v\u011bd\u011b\u017e, \u017ee je Zem\u011b kulat\u00e1?","description":"Tvar na\u0161\u00ed planety je n\u011b\u010d\u00edm, o \u010dem v\u016fbec nepochybujeme. M\u00e1me o n\u011bm toti\u017e spoustu nejr\u016fzn\u011bj\u0161\u00edch d\u016fkaz\u016f, p\u0159i\u010dem\u017e nikoliv nejmen\u0161\u00edm jsou sn\u00edmky Zem\u011b z\u00a0vesm\u00edru. Dnes a denn\u011b dost\u00e1v\u00e1me satelitn\u00ed fotografie, kter\u00e9 jej jasn\u011b ukazuj\u00ed v\u00a0cel\u00e9 sv\u00e9 kr\u00e1se. Zd\u00e1 se tedy, \u017ee bychom o tom nem\u011bli ani v\u00a0nejmen\u0161\u00edm pochybovat. Ov\u0161em pravdou je, \u017ee o tom velmi dob\u0159e […]","datePublished":"2024-08-29","dateModified":"2024-08-29","author":{"@type":"Person","@id":"https:\/\/www.zpraku.cz\/author\/#Person","name":"","url":"https:\/\/www.zpraku.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/9cae764794acc12213aa530e21558ed2bd96c03f91e0c3ad21cc1905765be658?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/9cae764794acc12213aa530e21558ed2bd96c03f91e0c3ad21cc1905765be658?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"zpraku.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.zpraku.cz\/wp-content\/uploads\/slunce3_10_1.jpg","url":"https:\/\/www.zpraku.cz\/wp-content\/uploads\/slunce3_10_1.jpg","height":0,"width":0},"url":"https:\/\/www.zpraku.cz\/jak-mohli-lide-jiz-drive-vedez-ze-je-zeme-kulata\/","about":["V\u011bda"],"wordCount":405,"articleBody":"Tvar na\u0161\u00ed planety je n\u011b\u010d\u00edm, o \u010dem v\u016fbec nepochybujeme. M\u00e1me o n\u011bm toti\u017e spoustu nejr\u016fzn\u011bj\u0161\u00edch d\u016fkaz\u016f, p\u0159i\u010dem\u017e nikoliv nejmen\u0161\u00edm jsou sn\u00edmky Zem\u011b z\u00a0vesm\u00edru. Dnes a denn\u011b dost\u00e1v\u00e1me satelitn\u00ed fotografie, kter\u00e9 jej jasn\u011b ukazuj\u00ed v\u00a0cel\u00e9 sv\u00e9 kr\u00e1se. Zd\u00e1 se tedy, \u017ee bychom o tom nem\u011bli ani v\u00a0nejmen\u0161\u00edm pochybovat. Ov\u0161em pravdou je, \u017ee o tom velmi dob\u0159e v\u011bd\u011bly ji\u017e star\u00e9 n\u00e1rody. Navzdory v\u0161eobecn\u00e9mu m\u00edn\u011bn\u00ed toti\u017e ve starov\u011bku nepanovalo p\u0159esv\u011bd\u010den\u00ed, \u017ee je placat\u00e1, jak bychom mohli v\u011b\u0159it. Je v\u0161ak ot\u00e1zkou, jak to vlastn\u011b v\u011bd\u011bli. Ve skute\u010dnosti o tom m\u011bli hned n\u011bkolik d\u016fkaz\u016f. T\u00edm prvn\u00edm a zdaleka nejd\u016fle\u017eit\u011bj\u0161\u00edm byly odplouvaj\u00edc\u00ed lod\u011b, kdy jim nejprve za obzorem zmizela nejni\u017e\u0161\u00ed \u010d\u00e1st, a postupn\u011b mizela a\u017e po plachty. Pokud by v\u0161ak Zem\u011b byla placka, pak by nemizela postupn\u011b, pouze by se zmen\u0161ovala, a\u017e by se ztratila z\u00a0dohledu, av\u0161ak po celou dobu by byla vid\u011bt cel\u00e1. Nic takov\u00e9ho v\u0161ak nepozorujeme ani dnes. To sam\u00e9 ostatn\u011b plat\u00ed i o pevnin\u011b, kdy nejprve vid\u00edme jej\u00ed nejvy\u0161\u0161\u00ed vrcholky, a teprve pozd\u011bji pob\u0159e\u017e\u00ed, t\u0159eba\u017ee je k\u00a0n\u00e1m bl\u00ed\u017ee. Na pevn\u00e9 zemi by pak muselo b\u00fdt jako prvn\u00ed vid\u011bt pob\u0159e\u017e\u00ed, a zbytek a\u017e pozd\u011bji. N\u011bco takov\u00e9ho v\u0161ak nepozorujeme. Pak je tu tak\u00e9 z\u00e1pad Slunce, kter\u00e9 postupn\u011b kles\u00e1 za obzor. Nevid\u00edme, \u017ee by se postupn\u011b zmen\u0161ovalo. Jeho velikost je v\u0161ak st\u00e1le stejn\u00e1 po celou dobu, n\u00fdbr\u017e jen kles\u00e1 za obzor, kde postupn\u011b miz\u00ed \u010di se naopak objevuje. V\u00a0neposledn\u00ed \u0159ad\u011b pak mus\u00edme zm\u00ednit Eratosth\u00e9n\u016fv experiment, kdy pomoc\u00ed dvou st\u00edn\u016f prok\u00e1zal nejen tvar Zem\u011b, ale tak\u00e9 vypo\u010d\u00edtal jej\u00ed polom\u011br, a to jen s\u00a0velmi nepatrnou odchylkou od skute\u010dnosti, zji\u0161t\u011bnou modern\u00edmi m\u011b\u0159ic\u00edmi p\u0159\u00edstroji. Je tedy jasn\u011b vid\u011bt, \u017ee ani star\u00e9 n\u00e1rody nebyly tak hloup\u00e9, a m\u011bly znalosti, kter\u00e9 bychom jim nep\u0159isuzovali. A to je velk\u00e1 \u0161koda. Zbyte\u010dn\u011b tak toti\u017e sv\u00e9 p\u0159edky podce\u0148ujeme, nam\u00edsto toho, abychom si jich v\u00e1\u017eili. Byli to toti\u017e lid\u00e9 stejn\u011b chyt\u0159\u00ed, jako jsme dnes my.                                                                                                                                                                                                                                                                                                                                                                                        4.6\/5 - (8 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jak mohli lid\u00e9 ji\u017e d\u0159\u00edve v\u011bd\u011b\u017e, \u017ee je Zem\u011b kulat\u00e1?","item":"https:\/\/www.zpraku.cz\/jak-mohli-lide-jiz-drive-vedez-ze-je-zeme-kulata\/#breadcrumbitem"}]}]