[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.fragra.cz\/jak-funguje-gravitace\/#Article","mainEntityOfPage":"https:\/\/www.fragra.cz\/jak-funguje-gravitace\/","headline":"Jak funguje gravitace","name":"Jak funguje gravitace","description":"Mezi fyzik\u00e1ln\u00edmi silami, kter\u00e9 na sv\u011bt kolem n\u00e1s i na n\u00e1s samotn\u00e9 p\u016fsob\u00ed, pat\u0159\u00ed gravitace k\u00a0t\u011bm nejslab\u0161\u00edm. P\u0159esto m\u00e1 na d\u011bn\u00ed nejen na na\u0161\u00ed planet\u011b, ale i v\u00a0cel\u00e9m kosmu, nezpochybniteln\u00fd vliv. I tak se v\u0161ak najdou lid\u00e9, kte\u0159\u00ed o jej\u00ed existenci pochybuj\u00ed.\u00a0Pravdou je, \u017ee podobn\u011b jako jin\u00e9 s\u00edly, ani gravitaci nem\u016f\u017eeme jen tak vid\u011bt. Nelze […]","datePublished":"2023-01-03","dateModified":"2023-05-04","author":{"@type":"Person","@id":"https:\/\/www.fragra.cz\/author\/#Person","name":"","url":"https:\/\/www.fragra.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/93f351f97d5e20a41105810347d62b8b573eebe9313df1f71432877ed17f5f1a?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/93f351f97d5e20a41105810347d62b8b573eebe9313df1f71432877ed17f5f1a?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"fragra.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.fragra.cz\/wp-content\/uploads\/gravitace5.jpg","url":"https:\/\/www.fragra.cz\/wp-content\/uploads\/gravitace5.jpg","height":0,"width":0},"url":"https:\/\/www.fragra.cz\/jak-funguje-gravitace\/","about":["V\u011bda"],"wordCount":433,"articleBody":"Mezi fyzik\u00e1ln\u00edmi silami, kter\u00e9 na sv\u011bt kolem n\u00e1s i na n\u00e1s samotn\u00e9 p\u016fsob\u00ed, pat\u0159\u00ed gravitace k\u00a0t\u011bm nejslab\u0161\u00edm. P\u0159esto m\u00e1 na d\u011bn\u00ed nejen na na\u0161\u00ed planet\u011b, ale i v\u00a0cel\u00e9m kosmu, nezpochybniteln\u00fd vliv. I tak se v\u0161ak najdou lid\u00e9, kte\u0159\u00ed o jej\u00ed existenci pochybuj\u00ed.\u00a0Pravdou je, \u017ee podobn\u011b jako jin\u00e9 s\u00edly, ani gravitaci nem\u016f\u017eeme jen tak vid\u011bt. Nelze ani nap\u0159\u00edklad zm\u011b\u0159it tepeln\u00e9 proudy a uk\u00e1zat tak, kudy vede. Je tedy jen logick\u00e9, \u017ee n\u011bkte\u0159\u00ed o jej\u00ed existenci pochybuj\u00ed.\u00a0Samoz\u0159ejm\u011b z\u00e1kladn\u00edm d\u016fkazem, kter\u00fd m\u00e1me, je p\u0159ita\u017elivost samotn\u00e1. Pr\u00e1v\u011b gravitace p\u016fsob\u00ed, \u017ee neodlet\u00edme ze Zem\u011b, \u017ee se planety dr\u017e\u00ed na sv\u00fdch ob\u011b\u017en\u00fdch drah\u00e1ch, \u010di \u017ee m\u00e1me M\u011bs\u00edc. To v\u0161ak zdaleka nesta\u010d\u00ed.\u00a0\u00a0Jednodu\u0161e \u0159e\u010deno, jak\u00e1koliv dv\u011b t\u011blesa se p\u0159itahuj\u00ed. Tato p\u0159ita\u017elivost je p\u0159\u00edmo \u00fam\u011brn\u00e1 objemu a hmotnosti dan\u00fdch t\u011bles. Proto nap\u0159\u00edklad Zem\u011b p\u0159itahuje n\u00e1s, lidi, pom\u011brn\u011b velkou silou, kde\u017eto s\u00edla, kterou ka\u017ed\u00fd jednotliv\u00fd \u010dlov\u011bk p\u0159itahuje Zemi, je ve srovn\u00e1n\u00ed s\u00a0t\u00edm zanedbateln\u00e1.\u00a0Jedn\u00e1 se v\u0161ak o velmi slabou interakci. Proto ji zdaleka nejl\u00e9pe pozorujeme v\u00a0kosmick\u00e9m m\u011b\u0159\u00edtku, tedy u t\u011bles, kter\u00e1 maj\u00ed velk\u00fd objem a hmotnost. To je tak\u00e9 d\u016fvod, pro\u010d tu\u017eka shozen\u00e1 ze stolu spadne na zem \u2013 na\u0161e planeta ji p\u0159it\u00e1hla.\u00a0\u00a0Samoz\u0159ejm\u011b lze nam\u00edtnout, \u017ee je to z\u00e1le\u017eitost hustoty \u2013 hust\u0161\u00ed objekty zkr\u00e1tka padaj\u00ed dol\u016f, kde\u017eto ty m\u00e9n\u011b hust\u00e9 se dr\u017e\u00ed naho\u0159e. Toto lze ov\u0161em velmi snadno vyvr\u00e1tit \u2013 jak je ur\u010deno, kter\u00fdm sm\u011brem je dol\u016f? Pokud by se jednalo jen o z\u00e1le\u017eitost hustoty, pak by p\u0159edm\u011bty naopak m\u011bly m\u00edt tendenci stoupat vzh\u016fru, kde je vzduch \u0159id\u0161\u00ed. To je v\u0161ak n\u011bco, co nevid\u00edme.\u00a0Probl\u00e9m \u010d\u00e1ste\u010dn\u011b vyvst\u00e1v\u00e1 s\u00a0pochopen\u00edm slova \u201edol\u016f\u201c. To v\u00a0tomto p\u0159\u00edpad\u011b neznamen\u00e1 \u201epod na\u0161e nohy\u201c, n\u00fdbr\u017e \u201esm\u011br ke gravita\u010dn\u00edmu centru\u201c. T\u00edm je zde j\u00e1dro na\u0161\u00ed planety. Proto tak\u00e9 ze Zem\u011b nespadneme, i kdy\u017e v\u00a0podstat\u011b stoj\u00edme na jej\u00edm boku.\u00a0Jist\u011b, m\u016f\u017ee to b\u00fdt pon\u011bkud zvl\u00e1\u0161tn\u00ed koncept na pochopen\u00ed, av\u0161ak p\u0159esto se jedn\u00e1 o jednu ze z\u00e1kladn\u00edch sil, kter\u00e9 utv\u00e1\u0159\u00ed n\u00e1\u0161 sv\u011bt. A jako takov\u00e1 si zaslou\u017e\u00ed pochopen\u00ed.                                                                                                                                                                                                                                                                                                                                                                                        4.3\/5 - (11 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jak funguje gravitace","item":"https:\/\/www.fragra.cz\/jak-funguje-gravitace\/#breadcrumbitem"}]}]