[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.fundlacek.cz\/divis-nebo-franklin\/#Article","mainEntityOfPage":"https:\/\/www.fundlacek.cz\/divis-nebo-franklin\/","headline":"Divi\u0161 nebo Franklin?","name":"Divi\u0161 nebo Franklin?","description":"Bez elektrick\u00e9 energie si dnes neum\u00edme p\u0159edstavit n\u00e1\u0161 \u017eivot. N\u011bkdy se ale m\u016f\u017ee st\u00e1t velice nebezpe\u010dnou. Zvl\u00e1\u0161t\u011b, kdy\u017e na n\u00e1s nekontrolovan\u011b \u00fato\u010d\u00ed p\u0159i letn\u00edch bou\u0159k\u00e1ch. Milovn\u00edci historie si jist\u011b vzpomenou na nejeden hrad, kter\u00fd byl zni\u010den pr\u00e1v\u011b po \u00faderu blesku. Nap\u0159\u00edklad jedna z na\u0161ich nejzn\u00e1m\u011bj\u0161\u00edch z\u0159\u00edcenin, hrad Land\u0161tejn. Kdyby u\u017e tenkr\u00e1t znali hromosvod, tak si…","datePublished":"2023-05-06","dateModified":"2023-05-06","author":{"@type":"Person","@id":"https:\/\/www.fundlacek.cz\/author\/devene\/#Person","name":"devene","url":"https:\/\/www.fundlacek.cz\/author\/devene\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/4faace62981be50719be6a25151192978e6d585737a520836dcb98934de3bb45?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/4faace62981be50719be6a25151192978e6d585737a520836dcb98934de3bb45?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"fundlacek.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.fundlacek.cz\/wp-content\/uploads\/img_a290018_w1949_t1501682852.jpg","url":"https:\/\/www.fundlacek.cz\/wp-content\/uploads\/img_a290018_w1949_t1501682852.jpg","height":0,"width":0},"url":"https:\/\/www.fundlacek.cz\/divis-nebo-franklin\/","wordCount":407,"articleBody":"Bez elektrick\u00e9 energie si dnes neum\u00edme p\u0159edstavit n\u00e1\u0161 \u017eivot. N\u011bkdy se ale m\u016f\u017ee st\u00e1t velice nebezpe\u010dnou. Zvl\u00e1\u0161t\u011b, kdy\u017e na n\u00e1s nekontrolovan\u011b \u00fato\u010d\u00ed p\u0159i letn\u00edch bou\u0159k\u00e1ch. Milovn\u00edci historie si jist\u011b vzpomenou na nejeden hrad, kter\u00fd byl zni\u010den pr\u00e1v\u011b po \u00faderu blesku. Nap\u0159\u00edklad jedna z na\u0161ich nejzn\u00e1m\u011bj\u0161\u00edch z\u0159\u00edcenin, hrad Land\u0161tejn. Kdyby u\u017e tenkr\u00e1t znali hromosvod, tak si mohli u\u0161et\u0159it mnoho starost\u00ed. Podle odborn\u00edk\u016f by se m\u011bl sp\u00ed\u0161e naz\u00fdvat bleskosvodem, proto\u017ee se zvukov\u00fdm projevem, kter\u00fd blesk doprov\u00e1z\u00ed, nem\u00e1 nic spole\u010dn\u00e9ho. Hromosvod je tedy za\u0159\u00edzen\u00ed, kter\u00e9 um\u011blou cestou p\u0159ij\u00edm\u00e1 bleskov\u00fd v\u00fdboj a n\u00e1sledn\u011b ho po\u0161le do zem\u011b. Za vyn\u00e1lezce hromosvodu jsou pova\u017eov\u00e1ni dva mu\u017ei. Americk\u00fd v\u011bdec a politik Benjamin Franklin a \u010desk\u00fd vyn\u00e1lezce Prokop Divi\u0161.\u00a7\u00a0 A\u0165 si Ameri\u010dan\u00e9 mysl\u00ed, co cht\u011bj\u00ed, ka\u017ed\u00fd \u010cech je jist\u011b pr\u00e1vem p\u0159esv\u011bd\u010den, \u017ee n\u00e1\u0161 Divi\u0161 byl ur\u010dit\u011b prvn\u00ed.\tJak hromosvod fungujePrvn\u00ed hromosvod um\u00edstil Prokop Divi\u0161 na farn\u00ed zahrad\u011b v P\u0159\u00edm\u011btic\u00edch u Znojma. Na svou budovu si tento vyn\u00e1lez musel v \u010cesk\u00e9m kr\u00e1lovstv\u00ed po\u010dkat je\u0161t\u011b dal\u0161\u00edch jednadvacet let, kdy byl instalov\u00e1n na z\u00e1mku v M\u011b\u0161ic\u00edch. Ka\u017ed\u00fd hromosvod se skl\u00e1d\u00e1 ze t\u0159\u00ed \u010d\u00e1st\u00ed.1.\u00a0\u00a0\u00a0\u00a0 J\u00edmac\u00ed za\u0159\u00edzen\u00ed \u2013 zde prob\u00edh\u00e1 prvn\u00ed f\u00e1ze, kterou je zachycen\u00ed blesku.2.\u00a0\u00a0\u00a0\u00a0 Svod \u2013 tato \u010d\u00e1st spojuje j\u00edmac\u00ed soustavu s uzemn\u011bn\u00edm.3.\u00a0\u00a0\u00a0\u00a0 Uzemn\u011bn\u00ed \u2013 tato \u010d\u00e1st je ulo\u017eena v zemi a v\u011bt\u0161inou je to zemn\u00edc\u00ed ty\u010d, deska nebo dr\u00e1t.Hromosvod se um\u00eds\u0165uje v\u011bt\u0161inou na vysok\u00e9 budovy, kter\u00e9 jsou bleskem nejv\u00edce ohro\u017eeny.Nap\u0159\u00edklad vesnick\u00e9 kostely, \u0161koly. Za\u0159\u00edzen\u00ed pro svod blesku se umis\u0165uje tak\u00e9 na budovy, kter\u00e9 by z\u00e1sahem elektrick\u00e9ho proudu mohly utrp\u011bt velk\u00e9 hospod\u00e1\u0159sk\u00e9 nebo kulturn\u00ed \u0161kody \u2013 archivy, muzea, v\u00fdrobn\u00ed haly. Dal\u0161\u00edmi budovami, kter\u00e9 by mohly z\u00e1sahem blesku doznat v\u011bt\u0161\u00edch \u0161kod, jsou n\u00e1dra\u017e\u00ed, plyn\u00e1rny, vod\u00e1rny, elektr\u00e1rny. Vzhledem k tomu, \u017ee blesk uhod\u00ed v\u011bt\u0161inou na nejvy\u0161\u0161\u00ed m\u00edsto v oblasti bou\u0159e, je nesmyslem se p\u0159i bou\u0159ce schov\u00e1vat pod stromy. Nejeden \u010dlov\u011bk na tuto neopatrnost doplatil \u017eivotem.                                                                                                                                                                                                                                                                                                                                                                                        4.2\/5 - (12 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Divi\u0161 nebo Franklin?","item":"https:\/\/www.fundlacek.cz\/divis-nebo-franklin\/#breadcrumbitem"}]}]