[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.ecr-cz.cz\/presne-meridlo\/#Article","mainEntityOfPage":"https:\/\/www.ecr-cz.cz\/presne-meridlo\/","headline":"P\u0159esn\u00e9 m\u011b\u0159idlo","name":"P\u0159esn\u00e9 m\u011b\u0159idlo","description":"P\u0159esn\u00e9 m\u00edry se datuj\u00ed u\u017e do historie, kde se m\u011b\u0159ilo \u201ep\u0159esn\u011b\u201c na palce, lokty a t\u0159eba couly. Bylo to rychl\u00e9 a v\u011bt\u0161inou v\u017edy ve prosp\u011bch","datePublished":"2020-04-13","dateModified":"2023-05-17","author":{"@type":"Person","@id":"https:\/\/www.ecr-cz.cz\/author\/devene\/#Person","name":"devene","url":"https:\/\/www.ecr-cz.cz\/author\/devene\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/69bd9b72104e3ccfb6214cbd23cb226f96c6ecf33a2a351fa1d4682235118df3?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/69bd9b72104e3ccfb6214cbd23cb226f96c6ecf33a2a351fa1d4682235118df3?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"ecr-cz.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.ecr-cz.cz\/wp-content\/uploads\/Mikrometr.jpg","url":"https:\/\/www.ecr-cz.cz\/wp-content\/uploads\/Mikrometr.jpg","height":0,"width":0},"url":"https:\/\/www.ecr-cz.cz\/presne-meridlo\/","about":["V\u00fdrobky"],"wordCount":432,"articleBody":"         P\u0159esn\u00e9 m\u00edry se datuj\u00ed u\u017e do historie, kde se m\u011b\u0159ilo \u201ep\u0159esn\u011b\u201c na palce, lokty a t\u0159eba couly. Bylo to rychl\u00e9 a v\u011bt\u0161inou v\u017edy ve prosp\u011bch prod\u00e1vaj\u00edc\u00edho, kter\u00fd to prost\u011b um\u011bl. Prvn\u00ed klasick\u00e1 m\u011b\u0159idla p\u0159i\u0161la a\u017e pozd\u011bji, ale ani zde se je\u0161t\u011b ned\u00e1 hovo\u0159it o naprost\u00e9 p\u0159esnosti. To je teprve budoucnost. P\u0159esn\u00e9 letopo\u010dty se asi dohledat nedaj\u00ed a i kdy\u017e, tak asi zcela relevantn\u00ed \u00fadaje mezi nimi nenajdeme. Ostatn\u011b n\u00e1m to m\u016f\u017ee b\u00fdt jedno, n\u00e1m posta\u010d\u00ed, \u017ee v\u00edme n\u011bco o metru a t\u00edm to sta\u010d\u00ed. To bude z\u00e1klad, na kter\u00e9m budeme pracovat, abychom nakonec p\u0159i\u0161li na to, \u017ee m\u011b\u0159idlo, o kter\u00e9m budeme \u010d\u00edst tuto m\u00edru nepot\u0159ebuje. Z metru se odv\u00edjej\u00ed jeho men\u0161\u00ed veli\u010diny, a\u017e po mikrometr a d\u00e1le. U\u017e ani nev\u00edm, jak je\u0161t\u011b men\u0161\u00ed. Ty se mus\u00ed n\u011bjak a n\u011b\u010d\u00edm m\u011b\u0159it, a proto \u010dlov\u011bk vynalezl d\u011bsnou spoustu m\u011b\u0159idel. Mezi n\u011b pat\u0159\u00ed klasick\u00e1 na m\u011b\u0159en\u00ed vzd\u00e1lenosti, \u010di d\u00e9lky. Ehm, je milimetr v\u016fbec d\u00e9lka? A jako dal\u0161\u00ed jsou m\u011b\u0159idla kompara\u010dn\u00ed. My si zde p\u0159e\u010dteme o jednom z nich a t\u00edm je pasametr. Kompara\u010dn\u00ed znamen\u00e1 to, \u017ee m\u011b\u0159idlo nezm\u011b\u0159\u00ed vzd\u00e1lenost odkud kam, laicky \u0159e\u010deno, ale zm\u011b\u0159\u00ed odchylku. Pokud chceme m\u011b\u0159it odchylku, mus\u00edme m\u00edt z\u00e1klad, abychom zm\u011b\u0159ili o kolik se v\u011bc od z\u00e1kladu odch\u00fdlila. Nap\u0159\u00edklad u v\u011b\u017ee v Pise m\u00e1me z\u00e1klad kolmici zemsk\u00e9 p\u0159ita\u017elivosti a m\u016f\u017eeme zm\u011b\u0159it o kolik se tato v\u011b\u017e odch\u00fdlila. Na tomto principu, tedy ne na zemsk\u00e9 p\u0159ita\u017elivost, ale na z\u00e1kladu je zalo\u017een pasametr. Zde si nastav\u00edme z\u00e1kladn\u00ed hodnoty dle pot\u0159eby a pak u\u017e je m\u011b\u0159\u00edme odchylku. T\u011bchto m\u011b\u0159idel je v\u00edce druh\u016f, v z\u00e1klad\u011b klasick\u00e9, ale tak\u00e9 nap\u0159\u00edklad s \u00fachylkom\u011brem. Ode\u010d\u00edt\u00e1n\u00ed m\u016f\u017ee b\u00fdt tak\u00e9 klasick\u00e9, nebo z digit\u00e1ln\u00edho mini displeje. V tomto p\u0159\u00edpad\u011b se jedn\u00e1 o digit\u00e1ln\u00ed pasametr. Pokud jste klikli na toto mod\u0159e zv\u00fdrazn\u011bn\u00e9 slovo, dostali jste se na web prodejce t\u011bchto m\u00e9n\u011b zn\u00e1m\u00fdch m\u011b\u0159idel a hned si je zde tak\u00e9 lze objednat. Vid\u00edte, \u017ee v\u00fdb\u011br je p\u0159\u00edmo ohromn\u00fd, a to nejen co se t\u00fd\u010de cen. Tak vyb\u00edrejte.                                                                                                                                                                                                                                                                                                                                                                                                   "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"P\u0159esn\u00e9 m\u011b\u0159idlo","item":"https:\/\/www.ecr-cz.cz\/presne-meridlo\/#breadcrumbitem"}]}]