{"id":12123,"date":"2026-07-03T08:15:42","date_gmt":"2026-07-03T08:15:42","guid":{"rendered":"https:\/\/www.rady-ch.top\/?p=12123"},"modified":"2026-07-03T08:15:43","modified_gmt":"2026-07-03T08:15:43","slug":"co-je-to-lod-svateho-petra-a-jak-se-pripravuje","status":"publish","type":"post","link":"https:\/\/www.rady-ch.top\/?p=12123","title":{"rendered":"Co je to Lo\u010f svat\u00e9ho Petra a jak se p\u0159ipravuje?"},"content":{"rendered":"\n

Lo\u010f svat\u00e9ho Petra\u201c (italsky: Barca di San Pietro) je stalet\u00ed star\u00fd, fascinuj\u00edc\u00ed venkovsk\u00fd zvyk. Praktikuje se p\u0159edev\u0161\u00edm v severn\u00ed It\u00e1lii (nap\u0159. v Ben\u00e1tsku, Lombardii a Piemontu), ale je zn\u00e1m\u00fd i v n\u011bkter\u00fdch alpsk\u00fdch oblastech.<\/p>\n\n\n\n

Tento ritu\u00e1l se tradi\u010dn\u011b kon\u00e1 v noci z 28. na 29. \u010dervna \u2013 v p\u0159edve\u010der sv\u00e1tku svat\u00fdch Petra a Pavla. Pomoc\u00ed vejce se ve vod\u011b magicky vytvo\u0159\u00ed \u201eplachetnice\u201c.<\/p>\n\n\n\n

Legenda a \u00fa\u010del
Proto\u017ee svat\u00fd Petr byl p\u0159ed sv\u00fdm povol\u00e1n\u00edm apo\u0161tolem ryb\u00e1\u0159em, v\u0161eobecn\u011b se v\u011b\u0159\u00ed, \u017ee v tuto noc sestupuje na Zemi. Fouk\u00e1 do n\u00e1dob v\u011b\u0159\u00edc\u00edch, aby jim uk\u00e1zal svou p\u0159\u00edtomnost, a aby z b\u00edlku vytvo\u0159il lo\u010fku.<\/p>\n\n\n\n

Pro farm\u00e1\u0159e slou\u017eila tato \u201elo\u010f\u201c jako v\u011b\u0161tba \u00farody a po\u010das\u00ed:<\/p>\n\n\n\n

Otev\u0159en\u00e9, pln\u00e9 plachty: Znamenaly dobr\u00e9 po\u010das\u00ed, dostatek slune\u010dn\u00edho svitu a \u00fasp\u011b\u0161nou sklize\u0148.<\/p>\n\n\n\n

Zav\u0159en\u00e9 nebo sotva vytvo\u0159en\u00e9 plachty: Ty byly interpretov\u00e1ny jako znamen\u00ed siln\u00e9ho de\u0161t\u011b, bou\u0159\u00ed nebo \u0161patn\u00e9ho zem\u011bd\u011blsk\u00e9ho roku.<\/p>\n\n\n\n

Jak p\u0159ipravit lo\u010f
P\u0159\u00edprava je neuv\u011b\u0159iteln\u011b jednoduch\u00e1 a je to z\u00e1bavn\u00fd experiment, kter\u00fd si d\u011bti dodnes u\u017e\u00edvaj\u00ed.<\/p>\n\n\n\n

    \n
  1. P\u0159ipravte n\u00e1dobu: Ve\u010der 28. \u010dervna.<\/li>\n<\/ol>\n\n\n\n

    Vezm\u011bte velkou, pr\u016fhlednou karafu, velkou sklenici nebo pr\u016fhlednou sklen\u011bnou zava\u0159ovac\u00ed n\u00e1dobu. Napl\u0148te ji asi do t\u0159\u00ed \u010dtvrtin \u010distou vodou pokojov\u00e9 teploty.<\/p>\n\n\n\n

      \n
    1. P\u0159idejte b\u00edlek: Opatrn\u011b odd\u011blte.<\/li>\n<\/ol>\n\n\n\n

      Rozbijte \u010derstv\u00e9 vejce a opatrn\u011b odd\u011blte b\u00edlek od \u017eloutku. Jemn\u011b a pomalu nechte do vody sklouznout pouze \u010dir\u00fd b\u00edlek. Nem\u00edchejte! B\u00edlek klesne na dno n\u00e1doby.<\/p>\n\n\n\n

        \n
      1. Um\u00edst\u011bte sklenici ven: Nechte ji p\u0159es noc p\u016fsobit.<\/li>\n<\/ol>\n\n\n\n

        Um\u00edst\u011bte sklenici p\u0159es noc ven \u2013 na tr\u00e1vn\u00edk v zahrad\u011b, na balkon nebo alespo\u0148 na vn\u011bj\u0161\u00ed stranu okenn\u00edho r\u00e1mu. Tradice vel\u00ed, \u017ee sklo mus\u00ed absorbovat no\u010dn\u00ed rosu.<\/p>\n\n\n\n

          \n
        1. Obdivujte lo\u010f: R\u00e1no 29. \u010dervna.<\/li>\n<\/ol>\n\n\n\n

          Pod\u00edvejte se do sklenice brzy r\u00e1no n\u00e1sleduj\u00edc\u00edho dne. B\u00edlek vystoup\u00ed na hladinu vody a vytvo\u0159\u00ed jemn\u00e9, b\u00edl\u00e9 struktury, kter\u00e9 se n\u00e1padn\u011b podobaj\u00ed st\u011b\u017e\u0148\u016fm, lan\u016fm a placht\u00e1m star\u00e9 plachetnice.<\/p>\n\n\n\n

          Fyzik\u00e1ln\u00ed vysv\u011btlen\u00ed: Za t\u00edmto zd\u00e1nliv\u00fdm z\u00e1zrakem se skr\u00fdv\u00e1 \u010dist\u00e1 fyzika: Zem\u011b, na kter\u00e9 sklenice stoj\u00ed, si zachovala denn\u00ed teplo, zat\u00edmco vzduch se v noci zna\u010dn\u011b ochlad\u00ed. Voda ve sklenici se shora dol\u016f ochlazuje, ale dole z\u016fst\u00e1v\u00e1 teplej\u0161\u00ed. Tyto tepeln\u00e9 rozd\u00edly vytv\u00e1\u0159ej\u00ed minim\u00e1ln\u00ed konvek\u010dn\u00ed proudy (pohyb vody sm\u011brem nahoru).<\/p>\n\n\n\n

          Proto\u017ee b\u00edlkovina m\u00e1 o n\u011bco vy\u0161\u0161\u00ed hustotu ne\u017e voda, ale v d\u016fsledku rann\u00edho oteplov\u00e1n\u00ed svou hustotu op\u011bt m\u011bn\u00ed, je drobn\u00fdmi vodn\u00edmi proudy ta\u017eena nahoru jako m\u011bkk\u00e9 nit\u011b. V\u00fdsledkem je dokonal\u00fd optick\u00fd profil plachetnice.<\/p>\n","protected":false},"excerpt":{"rendered":"

          Lo\u010f svat\u00e9ho Petra\u201c (italsky: Barca di San Pietro) je stalet\u00ed star\u00fd, fascinuj\u00edc\u00ed venkovsk\u00fd zvyk. Praktikuje se p\u0159edev\u0161\u00edm v severn\u00ed It\u00e1lii (nap\u0159. v Ben\u00e1tsku, Lombardii a Piemontu), ale je zn\u00e1m\u00fd i […]<\/p>\n","protected":false},"author":4,"featured_media":12124,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-12123","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zahrada"],"yoast_head":"\nCo je to Lo\u010f svat\u00e9ho Petra a jak se p\u0159ipravuje? - Recept\u00e1\u0159<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rady-ch.top\/?p=12123\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Co je to Lo\u010f svat\u00e9ho Petra a jak se p\u0159ipravuje? - Recept\u00e1\u0159\" \/>\n<meta property=\"og:description\" content=\"Lo\u010f svat\u00e9ho Petra\u201c (italsky: Barca di San Pietro) je stalet\u00ed star\u00fd, fascinuj\u00edc\u00ed venkovsk\u00fd zvyk. Praktikuje se p\u0159edev\u0161\u00edm v severn\u00ed It\u00e1lii (nap\u0159. v Ben\u00e1tsku, Lombardii a Piemontu), ale je zn\u00e1m\u00fd i […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rady-ch.top\/?p=12123\" \/>\n<meta property=\"og:site_name\" content=\"Recept\u00e1\u0159\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-03T08:15:42+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-03T08:15:43+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/www.rady-ch.top\/wp-content\/uploads\/2026\/07\/c471a37e-4b35-4aec-9190-f740bc72b859.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1080\" \/>\n\t<meta property=\"og:image:height\" content=\"1350\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Olia Olia\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Olia Olia\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.rady-ch.top\/?p=12123\",\"url\":\"https:\/\/www.rady-ch.top\/?p=12123\",\"name\":\"Co je to Lo\u010f svat\u00e9ho Petra a jak se p\u0159ipravuje? - Recept\u00e1\u0159\",\"isPartOf\":{\"@id\":\"http:\/\/www.rady-ch.top\/#website\"},\"datePublished\":\"2026-07-03T08:15:42+00:00\",\"dateModified\":\"2026-07-03T08:15:43+00:00\",\"author\":{\"@id\":\"http:\/\/www.rady-ch.top\/#\/schema\/person\/a0b2dd9c21308f7c1a65f8de8dc87830\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.rady-ch.top\/?p=12123#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.rady-ch.top\/?p=12123\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.rady-ch.top\/?p=12123#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"http:\/\/www.rady-ch.top\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Co je to Lo\u010f svat\u00e9ho Petra a jak se p\u0159ipravuje?\"}]},{\"@type\":\"WebSite\",\"@id\":\"http:\/\/www.rady-ch.top\/#website\",\"url\":\"http:\/\/www.rady-ch.top\/\",\"name\":\"Recept\u00e1\u0159\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"http:\/\/www.rady-ch.top\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"http:\/\/www.rady-ch.top\/#\/schema\/person\/a0b2dd9c21308f7c1a65f8de8dc87830\",\"name\":\"Olia Olia\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"http:\/\/www.rady-ch.top\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/343f89fd2997c8d6759c4c2d3fb7361cf802e8af3ffb92f32b7b2820d3694276?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/343f89fd2997c8d6759c4c2d3fb7361cf802e8af3ffb92f32b7b2820d3694276?s=96&d=mm&r=g\",\"caption\":\"Olia Olia\"},\"url\":\"https:\/\/www.rady-ch.top\/?author=4\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Co je to Lo\u010f svat\u00e9ho Petra a jak se p\u0159ipravuje? - Recept\u00e1\u0159","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.rady-ch.top\/?p=12123","og_locale":"en_US","og_type":"article","og_title":"Co je to Lo\u010f svat\u00e9ho Petra a jak se p\u0159ipravuje? - Recept\u00e1\u0159","og_description":"Lo\u010f svat\u00e9ho Petra\u201c (italsky: Barca di San Pietro) je stalet\u00ed star\u00fd, fascinuj\u00edc\u00ed venkovsk\u00fd zvyk. 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