[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.saneko.cz\/jake-mame-dukazy-ze-gravitace-funguje\/#Article","mainEntityOfPage":"https:\/\/www.saneko.cz\/jake-mame-dukazy-ze-gravitace-funguje\/","headline":"Jak\u00e9 m\u00e1me d\u016fkazy, \u017ee gravitace funguje","name":"Jak\u00e9 m\u00e1me d\u016fkazy, \u017ee gravitace funguje","description":"O gravitaci se u\u010d\u00ed d\u011bti ji\u017e na z\u00e1kladn\u00ed \u0161kole. Jedn\u00e1 se o jednu ze slab\u00fdch sil, kter\u00e9 dr\u017e\u00ed n\u00e1\u0161 vesm\u00edr pohromad\u011b. Je d\u016fvodem toho, pro\u010d neodl\u00e9tneme do vesm\u00edru a pro\u010d na\u0161e planeta ob\u00edh\u00e1 kolem Slunce. Probl\u00e9m je v\u0161ak v\u00a0tom, \u017ee ji nem\u016f\u017eeme vid\u011bt. Nelze uk\u00e1zat a \u0159\u00edci \u201eto je gravitace\u201c. Je tedy jen pochopiteln\u00e9, \u017ee…","datePublished":"2023-10-06","dateModified":"2023-12-07","author":{"@type":"Person","@id":"https:\/\/www.saneko.cz\/author\/#Person","name":"","url":"https:\/\/www.saneko.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/a414941ff2b86a79f1a70a433f21d60df00047fefe742a46b6fded139881a475?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/a414941ff2b86a79f1a70a433f21d60df00047fefe742a46b6fded139881a475?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"saneko.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.saneko.cz\/wp-content\/uploads\/art475142_16x9_20260930_235002_g6XZ2a.jpg","url":"https:\/\/www.saneko.cz\/wp-content\/uploads\/art475142_16x9_20260930_235002_g6XZ2a.jpg","height":0,"width":0},"url":"https:\/\/www.saneko.cz\/jake-mame-dukazy-ze-gravitace-funguje\/","about":["V\u011bda"],"wordCount":404,"articleBody":"\tO gravitaci se u\u010d\u00ed d\u011bti ji\u017e na z\u00e1kladn\u00ed \u0161kole. Jedn\u00e1 se o jednu ze slab\u00fdch sil, kter\u00e9 dr\u017e\u00ed n\u00e1\u0161 vesm\u00edr pohromad\u011b. Je d\u016fvodem toho, pro\u010d neodl\u00e9tneme do vesm\u00edru a pro\u010d na\u0161e planeta ob\u00edh\u00e1 kolem Slunce. Probl\u00e9m je v\u0161ak v\u00a0tom, \u017ee ji nem\u016f\u017eeme vid\u011bt. Nelze uk\u00e1zat a \u0159\u00edci \u201eto je gravitace\u201c. Je tedy jen pochopiteln\u00e9, \u017ee n\u011bkte\u0159\u00ed lid\u00e9 cht\u011bj\u00ed m\u00edt d\u016fkazy o tom, \u017ee existuje. A t\u011bch m\u00e1me hned n\u011bkolik.\tV\u00a0prvn\u00ed \u0159ad\u011b je tu fakt, \u017ee v\u011bci padaj\u00ed sm\u011brem dol\u016f, a\u010dkoliv \u010d\u00edm v\u00fd\u0161e stoup\u00e1me, \u010d\u00edm \u0159id\u0161\u00ed vzduch je. Logika v\u011bci by tedy velela, \u017ee cokoliv pust\u00edme, m\u011blo by stoupat, nikoliv klesat. Je tedy jasn\u00e9, \u017ee n\u00e1s i v\u0161e ostatn\u00ed n\u011bco k\u00a0povrchu p\u0159itahuje.\tD\u00e1le je tu fakt, \u017ee pokud odstran\u00edme odpor vzduchu (nap\u0159\u00edklad pomoc\u00ed vakuov\u00e9ho prostoru), pak v\u0161echny p\u0159edm\u011bty padaj\u00ed stejnou rychlost\u00ed \u2013 \u017eelezn\u00e9 kouli bude p\u00e1d trvat stejnou dobu jako pe\u0159\u00ed\u010dku. Je tedy vid\u011bt, \u017ee ona s\u00edla nez\u00e1vis\u00ed na hmotnosti.\tTak\u00e9 plat\u00ed, \u017ee \u010d\u00edm v\u00edce se vzd\u00e1l\u00edme od gravita\u010dn\u00edho centra (v tomto p\u0159\u00edpad\u011b na\u0161\u00ed planety), t\u00edm d\u00e9le bude v\u011bcem trvat, ne\u017e dopadnou. Pokud budeme mimo gravita\u010dn\u00ed pole, pak v\u011bci nebudou padat v\u016fbec. To je dal\u0161\u00ed d\u016fkaz toho, \u017ee existuje s\u00edla, kter\u00e1 na p\u0159edm\u011bty p\u016fsob\u00ed.\tJak ale funguje? S\u00a0trochou nads\u00e1zky ji lze p\u0159irovnat k\u00a0magnetismu. Dva p\u0159edm\u011bty se navz\u00e1jem p\u0159itahuj\u00ed, p\u0159i\u010dem\u017e ona s\u00edla je proporcion\u00e1ln\u00ed k\u00a0jejich hmotnosti. Proto n\u00e1s Zem\u011b dr\u017e\u00ed na zemi, zat\u00edmco s\u00edla, kterou p\u016fsob\u00edme my na na\u0161i planetu, je v\u00a0podstat\u011b zanedbateln\u00e1.\tZapomenout nesm\u00edme ani na fakt, \u017ee gravita\u010dn\u00ed konstanta, vych\u00e1zej\u00edc\u00ed pr\u00e1v\u011b z\u00a0rychlosti p\u00e1du v\u011bc\u00ed ve vakuu na zemsk\u00e9m povrchu, je sou\u010d\u00e1st\u00ed mnoha fyzik\u00e1ln\u00edch rovnic. Rovnic, u kter\u00fdch v\u00edme, \u017ee funguj\u00ed, nebo\u0165 dovedou p\u0159esn\u011b p\u0159edv\u00eddat, p\u0159\u00edpadn\u011b popisovat, dan\u00e9 jevy.\tProto, i kdy\u017e ji nem\u016f\u017eeme vid\u011bt, ovliv\u0148uje gravitace na\u0161e \u017eivoty. A je pravdou, \u017ee bez n\u00ed by \u017eivot ani nemohl vzniknout. O jej\u00ed existenci tedy rozhodn\u011b nen\u00ed t\u0159eba pochybovat.\t                                                                                                                                                                                                                                                                                                                                                                                                "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jak\u00e9 m\u00e1me d\u016fkazy, \u017ee gravitace funguje","item":"https:\/\/www.saneko.cz\/jake-mame-dukazy-ze-gravitace-funguje\/#breadcrumbitem"}]}]