[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.digitus.cz\/jak-funguje-nas-zrak\/#Article","mainEntityOfPage":"https:\/\/www.digitus.cz\/jak-funguje-nas-zrak\/","headline":"Jak funguje n\u00e1\u0161 zrak","name":"Jak funguje n\u00e1\u0161 zrak","description":"Dnes st\u00e1le v\u00edce lid\u00ed mus\u00ed nosit br\u00fdle, co\u017e je d\u00e1no sou\u010dasn\u00fdm zp\u016fsobem \u017eivota. M\u011bli bychom umo\u017enit zraku dostatek odpo\u010dinku, hlavn\u011b pobyt na \u010derstv\u00e9m vzduchu, vyv\u00e1\u017een\u00fd j\u00eddeln\u00ed\u010dek a o\u010dn\u00ed gymnastiku. Po\u010d\u00edta\u010d by m\u011bli omezit p\u0159edev\u0161\u00edm d\u011bti, jejich\u017e zrak se st\u00e1le vyv\u00edj\u00ed. Pokud vid\u00edme dob\u0159e, jsme schopni p\u0159e\u010d\u00edst \u0159\u00e1dek o velikosti 8,8 milimetru na Snellov\u011b tabuli u […]","datePublished":"2024-10-04","dateModified":"2024-10-04","author":{"@type":"Person","@id":"https:\/\/www.digitus.cz\/author\/#Person","name":"digitus.cz\n","url":"https:\/\/www.digitus.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/d2f205e1507a0401c7d467d32c87ccece0f63a45b81075bb691dbe8d4c823787?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/d2f205e1507a0401c7d467d32c87ccece0f63a45b81075bb691dbe8d4c823787?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"digitus.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.digitus.cz\/wp-content\/uploads\/img_a300818_w1912_t1510860961.jpg","url":"https:\/\/www.digitus.cz\/wp-content\/uploads\/img_a300818_w1912_t1510860961.jpg","height":0,"width":0},"url":"https:\/\/www.digitus.cz\/jak-funguje-nas-zrak\/","about":["Zdrav\u00ed"],"wordCount":398,"articleBody":"Dnes st\u00e1le v\u00edce lid\u00ed mus\u00ed nosit br\u00fdle, co\u017e je d\u00e1no sou\u010dasn\u00fdm zp\u016fsobem \u017eivota. M\u011bli bychom umo\u017enit zraku dostatek odpo\u010dinku, hlavn\u011b pobyt na \u010derstv\u00e9m vzduchu, vyv\u00e1\u017een\u00fd j\u00eddeln\u00ed\u010dek a o\u010dn\u00ed gymnastiku. Po\u010d\u00edta\u010d by m\u011bli omezit p\u0159edev\u0161\u00edm d\u011bti, jejich\u017e zrak se st\u00e1le vyv\u00edj\u00ed. Pokud vid\u00edme dob\u0159e, jsme schopni p\u0159e\u010d\u00edst \u0159\u00e1dek o velikosti 8,8 milimetru na Snellov\u011b tabuli u o\u010dn\u00edho l\u00e9ka\u0159e.\u00a0Oko je z\u00e1zra\u010dn\u00e1 vymo\u017eenost\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Sice nejsme jako ko\u010dky, kter\u00e9 maj\u00ed v oku jak\u00e9si zrcadlo, kter\u00e9 vyu\u017eije sebeslab\u0161\u00ed paprsek sv\u011btla, ale i n\u00e1\u0161 zrak je velmi CITLIV\u00dd. Ve tm\u011b se jeho citlivost zv\u00fd\u0161\u00ed a\u017e \u0161esttis\u00edckr\u00e1t a zap\u00e1lenou sv\u00ed\u010dku uvid\u00edme v \u00fapln\u00e9 tm\u011b na v\u00edc ne\u017e kilometr.\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Stejn\u011b jako se lid\u00e9 li\u0161\u00ed otisky prst\u016f, neexistuj\u00ed dv\u011b stejn\u00e9 DUHOVKY, a to dokonce ani u jednovaje\u010dn\u00fdch dvoj\u010dat. Jejich barvu ur\u010duje mno\u017estv\u00ed melaninu od sv\u011btle modr\u00e9 po tmav\u011b hn\u011bdou.\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Asi 130 mili\u00f3n\u016f bun\u011bk ty\u010dinek a 7 mili\u00f3n\u016f bun\u011bk \u010d\u00edpk\u016f S\u00cdTNICE umo\u017e\u0148uj\u00ed rozli\u0161it a\u017e 10 mili\u00f3n\u016f barevn\u00fdch odst\u00edn\u016f a vid\u011bn\u00ed za \u0161era. Jen zlomky vte\u0159iny sta\u010d\u00ed lidsk\u00e9mu mozku k tomu, aby odra\u017een\u00fd obraz vzh\u016fru nohama za pomoci o\u010dn\u00edho nervu zpracoval a obr\u00e1til. P\u0159eost\u0159it pak dok\u00e1\u017ee na\u0161e oko opravdu bleskurychle \u2013 ze vzd\u00e1lenosti 7 centimetr\u016f to zvl\u00e1dne za 0,35 vte\u0159iny.\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Kulovit\u011b vyklenut\u00e1 a leskl\u00e1 ROHOVKA\u00a0 tvo\u0159\u00ed dv\u011b t\u0159etiny oka. Umo\u017e\u0148uje spole\u010dn\u011b s \u010do\u010dkou prostup a lom sv\u011btla a je-li v jej\u00edm vyklenut\u00ed chyba, zp\u016fsobuje probl\u00e9my se zaost\u0159ov\u00e1n\u00edm.\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 SPOJIVKA pokr\u00fdv\u00e1 povrch oka a vnit\u0159n\u00ed stranu v\u00ed\u010dek. Jej\u00ed z\u00e1n\u011bt je nep\u0159\u00edjemn\u00e9 a pom\u011brn\u011b \u010dast\u00e9 onemocn\u011bn\u00ed. Vak spojivky obsahuje slzy, jejich\u017e kan\u00e1lky jsou propojen\u00e9 s nosem, proto n\u00e1m p\u0159i pl\u00e1\u010di z\u00e1rove\u0148 te\u010de i z nosu.\u00a0Kdy\u017e \u010dlov\u011bk vid\u00ed jen rukamaPro \u010dlov\u011bka je \u00fapln\u011b nejhor\u0161\u00ed p\u0159ij\u00edt o zrak, proto\u017ee jeho prost\u0159ednictv\u00edm p\u0159ij\u00edm\u00e1me a\u017e dv\u011b t\u0159etiny informac\u00ed. Pro nevidom\u00e9 je obrovskou pomoc\u00ed HMATOV\u00c9 P\u00cdSMO, kter\u00e9 vynalezl u\u017e v roce 1824 nevidom\u00fd francouzsk\u00fd u\u010ditelLouis Braille.                                                                                                                                                                                                                                                                                                                                                                                        5\/5 - (3 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jak funguje n\u00e1\u0161 zrak","item":"https:\/\/www.digitus.cz\/jak-funguje-nas-zrak\/#breadcrumbitem"}]}]