[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.virgo-plus.cz\/co-bychom-meli-o-zarovkach-vedet\/#Article","mainEntityOfPage":"https:\/\/www.virgo-plus.cz\/co-bychom-meli-o-zarovkach-vedet\/","headline":"Co bychom m\u011bli o \u017e\u00e1rovk\u00e1ch v\u011bd\u011bt","name":"Co bychom m\u011bli o \u017e\u00e1rovk\u00e1ch v\u011bd\u011bt","description":"Co maj\u00ed v\u0161echny \u017e\u00e1rovky spole\u010dn\u00e9, je zdroj elektrick\u00e9ho proudu. Vz\u00e1jemn\u011b se v\u0161ak li\u0161\u00ed mnoha parametry, a jestli\u017ee uva\u017eujeme o nov\u00e9m elektrick\u00e9m osv\u011btlen\u00ed, m\u011bli bychom o jeho z\u00e1kladn\u00edch vlastnostech n\u011bco v\u011bd\u011bt. Ned\u00e1vno proveden\u00fd pr\u016fzkum ve\u0159ejn\u00e9ho m\u00edn\u011bn\u00ed prozradil, \u017ee t\u0159i lid\u00e9 z p\u011bti v\u016fbec nev\u00ed, jak se na obalu \u017e\u00e1rovek ozna\u010duje barevn\u00e9<!--hoot-read-more-quicktag-->","datePublished":"2018-06-26","dateModified":"2018-06-26","author":{"@type":"Person","@id":"https:\/\/www.virgo-plus.cz\/author\/#Person","name":"","url":"https:\/\/www.virgo-plus.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/4860d213c5bedfa07ff2b166ff7b069759f9dbf79eae813578c75f9f8cb939b7?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/4860d213c5bedfa07ff2b166ff7b069759f9dbf79eae813578c75f9f8cb939b7?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"virgo-plus.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.virgo-plus.cz\/wp-content\/uploads\/img_a319567_w2571_t1530602419.jpg","url":"https:\/\/www.virgo-plus.cz\/wp-content\/uploads\/img_a319567_w2571_t1530602419.jpg","height":0,"width":0},"url":"https:\/\/www.virgo-plus.cz\/co-bychom-meli-o-zarovkach-vedet\/","wordCount":435,"articleBody":" Co maj\u00ed v\u0161echny \u017e\u00e1rovky spole\u010dn\u00e9, je zdroj elektrick\u00e9ho proudu. Vz\u00e1jemn\u011b se v\u0161ak li\u0161\u00ed mnoha parametry, a jestli\u017ee uva\u017eujeme o nov\u00e9m elektrick\u00e9m osv\u011btlen\u00ed, m\u011bli bychom o jeho z\u00e1kladn\u00edch vlastnostech n\u011bco v\u011bd\u011bt. Ned\u00e1vno proveden\u00fd pr\u016fzkum ve\u0159ejn\u00e9ho m\u00edn\u011bn\u00ed prozradil, \u017ee t\u0159i lid\u00e9 z p\u011bti v\u016fbec nev\u00ed, jak se na obalu \u017e\u00e1rovek ozna\u010duje barevn\u00e9 sv\u011bteln\u00e9 spektrum. Co bychom m\u011bli zn\u00e1t je\u0161t\u011b p\u0159ed t\u00edm, ne\u017e vlo\u017e\u00edme \u017e\u00e1rovku do n\u00e1kupn\u00edho ko\u0161\u00edku V\u00fdkon, resp. p\u0159\u00edkon \u2013 jedna ze z\u00e1kladn\u00edch hodnot, kter\u00e1 je pro v\u00fdb\u011br osv\u011btlovac\u00ed techniky rozhoduj\u00edc\u00ed. Ud\u00e1v\u00e1me ji ve Wattech a vypov\u00edd\u00e1 o tom, kolik elektrick\u00e9 energie sv\u011btlo spot\u0159ebuje. P\u016fvodn\u00ed vl\u00e1knov\u00e9 \u017e\u00e1rovky v dom\u00e1cnostech m\u011bly zpravidla p\u0159\u00edkon od 25 do 100 W, zat\u00edmco sou\u010dasn\u00e9 zdroje \u0159\u00e1dov\u011b ni\u017e\u0161\u00ed od 5 do 15 W. Sv\u011bteln\u00fd tok \u2013 jakou intenzitu sv\u011btla zdroj vyza\u0159uje, ud\u00e1v\u00e1 se lumenech na Watt (lm\/W). Sou\u010dasn\u00e9 LED diodov\u00e9 technologie   jsou ji\u017e na takov\u00e9 \u00farovni, \u017ee jsou schopny pracovat v re\u017eimu reflektor\u016f a nahradit st\u00e1vaj\u00edc\u00ed v\u00fdbojkov\u00e9 osv\u011btlen\u00ed. \u017divotnost \u2013 p\u016fvodn\u00ed \u017e\u00e1rovky z wolframov\u00e9ho vl\u00e1kna sv\u00edtily zhruba 1 rok (\u017eivotnost 1000 hodin) a dnes vyr\u00e1b\u011bn\u00e9 \u017e\u00e1rovky LED maj\u00ed \u017eivotnost n\u011bkolikan\u00e1sobn\u011b vy\u0161\u0161\u00ed (25 \u2013 50 tis\u00edc hodin). Barevn\u00e9 spektrum (teplota chromati\u010dnosti) \u2013 vyjad\u0159ovan\u00e9 v Kelvinech ur\u010duje, zda jde o tepl\u00e9, nebo naopak chladn\u00e9 t\u00f3ny sv\u011bteln\u00e9ho spektra b\u00edl\u00e9 barvy. Tepl\u00e9 b\u00edl\u00e9 sv\u011btlo (s na\u017eloutl\u00fdm odst\u00ednem) m\u00e1 teplotu kolem 2800 K a chladn\u00e9 namodral\u00e9 sv\u011btlo zhruba 5000 \u2013 7000 K. Teplej\u0161\u00ed barvy jsou vhodn\u011bj\u0161\u00ed k relaxaci a uvoln\u011bn\u00ed, namodral\u00e9 sv\u011btlo zvy\u0161uje pozornost a je ide\u00e1ln\u00ed na osv\u011btlen\u00ed pracovi\u0161t\u011b (pr\u016fmyslov\u00fdch provoz\u016f, psac\u00edch stol\u016f, kuchy\u0148sk\u00fdch linek apod.) Index reprodukce barev Ra \u2013 vztahuje se ke sv\u011bteln\u00e9mu spektru slune\u010dn\u00edho z\u00e1\u0159en\u00ed, optim\u00e1ln\u00ed hodnota by byla 100 (%), co\u017e znamen\u00e1, \u017ee by se sv\u011btlo pln\u011b shodovalo s denn\u00edm slune\u010dn\u00edm spektrem, v\u010detn\u011b neviditeln\u00fdch vlnov\u00fdch d\u00e9lek sv\u011btla. Za plnospektr\u00e1ln\u00ed osv\u011btlen\u00ed lze pova\u017eovat zdroje ji\u017e od Ra = 80. Patice a z\u00e1vit \u2013 vyr\u00e1b\u00ed se jich n\u011bkolik druh\u016f a zna\u010d\u00ed se E27, E14, GU10, G9, R7s, GU 5.3. Nejzn\u00e1m\u011bj\u0161\u00ed z nich je patice E27, kter\u00e1 je spojov\u00e1na s klasickou vl\u00e1knovou \u017e\u00e1rovkou, a vyr\u00e1b\u00ed se ji\u017e t\u00e9m\u011b\u0159 sto let.                                                                                                                                                                                                                                                                                                                                                                                                 "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Co bychom m\u011bli o \u017e\u00e1rovk\u00e1ch v\u011bd\u011bt","item":"https:\/\/www.virgo-plus.cz\/co-bychom-meli-o-zarovkach-vedet\/#breadcrumbitem"}]}]