{"id":833,"date":"2011-07-06T14:43:50","date_gmt":"2011-07-06T14:43:50","guid":{"rendered":"http:\/\/kpv.rs\/?p=833"},"modified":"2011-07-07T09:46:46","modified_gmt":"2011-07-07T09:46:46","slug":"kako-nastaje-zlato-u-prirodi","status":"publish","type":"post","link":"http:\/\/kpv.rs\/?p=833","title":{"rendered":"Kako nastaje zlato u prirodi?"},"content":{"rendered":"<p><a href=\"http:\/\/kpv.rs\/wp-content\/uploads\/2011\/07\/gold_price_trend1.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft size-medium wp-image-834\" title=\"gold_price_trend1\" src=\"http:\/\/kpv.rs\/wp-content\/uploads\/2011\/07\/gold_price_trend1-300x212.jpg\" alt=\"\" width=\"300\" height=\"212\" srcset=\"http:\/\/kpv.rs\/wp-content\/uploads\/2011\/07\/gold_price_trend1-300x212.jpg 300w, http:\/\/kpv.rs\/wp-content\/uploads\/2011\/07\/gold_price_trend1.jpg 898w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Odgovor uop\u0161te nije jednostavan. Znamo da se hemijski elementi, od kiseonika do ugljenika, formiraju u unutra\u0161njosti zvezda, u procesima nuklearne fuzije, a zatim se rasipaju po \u010ditavom univerzumu kada neke zvezde, u fazi supernove, eksplodiraju. Ipak, postoji granica u ovim reakcijama, jer nije mogu\u0107e dobiti elemente koji su te\u017ei od gvo\u017e\u0111a, kao npr. zlato i platinu.<!--more--><br \/>\nPrema nekim astrofizi\u010darima, kao \u0161to je Stefan Rosvog, sa Univerziteta u Lesteru (Engleska), zlato i drugi te\u0161ki elementi se formiraju usled sudara dvostrukih zvezda sastavljenih od neutrona, \u0161to predstavlja pravu kosmi\u010dku kataklizmu. U ovim doga\u0111ajima, koji traju nekoliko milisekundi, razvijaju se veoma velike energije i temperature i do milijardu Celzijusovih stepeni. Na ovaj na\u010din relativno lak\u0161a jezgra, na primer jezgra gvo\u017e\u0111a, skupljaju neutrone i protone i postaju jezgra mnogo te\u017eih elemenata, kao \u0161to su zlato i platina. Dok se dve biv\u0161e neutronske zvezde pretvaraju u \u201ecrnu rupu\u201d, deo materije koji je nastao pri sudaru rasipa se po univerzumu gde ih \u201ezarobljavaju\u201d druge zvezda ili me\u0111uplanetarne magline od kojih su nastale i planete kao \u0161to je na\u0161a.<br \/>\nOtuda, nakit od zlata, lep i blistav kakav jeste, istovremeno je i opipljiv dokaz velikih kosmi\u010dkih kataklizmi.<\/p>\n\n<div class=\"jwsharethis\">\nPodelite \u010dlanak: \n<br \/>\n<a href=\"mailto:?subject=Kako%20nastaje%20zlato%20u%20prirodi%3F&amp;body=http%3A%2F%2Fkpv.rs%2F%3Fp%3D833\">\n<img src=\"http:\/\/kpv.rs\/wp-content\/plugins\/jw-share-this\/email.png\" alt=\"Podelite putem email-a\" \/>\n<\/a>\n<a target=\"_blank\" href=\"http:\/\/www.facebook.com\/sharer.php?u=http%3A%2F%2Fkpv.rs%2F%3Fp%3D833&amp;t=Kako+nastaje+zlato+u+prirodi%3F\">\n<img src=\"http:\/\/kpv.rs\/wp-content\/plugins\/jw-share-this\/fb.png\" alt=\"Podelite ovaj tekst na facebook-u\" \/>\n<\/a>\n<a target=\"_blank\" href=\"http:\/\/twitter.com\/intent\/tweet?text=I+like+http%3A%2F%2Fkpv.rs%2F%3Fp%3D833&amp;title=Kako+nastaje+zlato+u+prirodi%3F\">\n<img src=\"http:\/\/kpv.rs\/wp-content\/plugins\/jw-share-this\/twitter.png\" alt=\"Podelite putem Twitter-a\" \/>\n<\/a>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Odgovor uop\u0161te nije jednostavan. Znamo da se hemijski elementi, od kiseonika do ugljenika, formiraju u unutra\u0161njosti zvezda, u procesima nuklearne fuzije, a zatim se rasipaju po \u010ditavom univerzumu kada neke zvezde, u fazi supernove, eksplodiraju. Ipak, postoji granica u ovim reakcijama, jer nije mogu\u0107e dobiti elemente koji su [&hellip;]<\/p>\n","protected":false},"author":53,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,44,35],"tags":[],"_links":{"self":[{"href":"http:\/\/kpv.rs\/index.php?rest_route=\/wp\/v2\/posts\/833"}],"collection":[{"href":"http:\/\/kpv.rs\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/kpv.rs\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/kpv.rs\/index.php?rest_route=\/wp\/v2\/users\/53"}],"replies":[{"embeddable":true,"href":"http:\/\/kpv.rs\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=833"}],"version-history":[{"count":3,"href":"http:\/\/kpv.rs\/index.php?rest_route=\/wp\/v2\/posts\/833\/revisions"}],"predecessor-version":[{"id":2768,"href":"http:\/\/kpv.rs\/index.php?rest_route=\/wp\/v2\/posts\/833\/revisions\/2768"}],"wp:attachment":[{"href":"http:\/\/kpv.rs\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/kpv.rs\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=833"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/kpv.rs\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}