{"id":3243,"date":"2012-02-15T21:25:59","date_gmt":"2012-02-15T19:25:59","guid":{"rendered":"http:\/\/www.ilkkimbuldu.com\/?p=3243"},"modified":"2017-01-01T20:30:08","modified_gmt":"2017-01-01T18:30:08","slug":"kursunu-kim-buldu","status":"publish","type":"post","link":"https:\/\/www.ilkkimbuldu.com\/?p=3243","title":{"rendered":"Kur\u015funu kim buldu, kim ke\u015ffetti"},"content":{"rendered":"<p>Kur\u015fun \u00e7ok eskiden beri bilinen ve kullan\u0131lan, dokuz kimyasal elementten biri olan, yumu\u015fak ve a\u011f\u0131r bir metaldir. Sembol\u00fc, Latince \u201cplumbum\u201d den dolay\u0131 \u201cPb\u201ddir. \u00c7ok eskiden beri kullan\u0131lmaktad\u0131r. \u0130lk zamanlar, g\u00fcm\u00fc\u015fle ayn\u0131 cevherden elde edildi\u011fi i\u00e7in beraber tan\u0131nm\u0131\u015ft\u0131r. M.\u00d6. 3000 y\u0131llar\u0131ndan \u00f6nce <strong>M\u0131s\u0131r<\/strong>\u2019da elde edilip, kullan\u0131lm\u0131\u015ft\u0131r. Eski yerle\u015fim merkezlerinden olan ve \u00c7anakkale\u2019ye yak\u0131n bulunan Abidos\u2019ta bulunan bir kur\u015fun heykel, M.\u00d6. 3000 y\u0131llar\u0131na aittir.<\/p>\n<p>M.\u00d6. 1100\u2019de Finikelilerin, \u0130spanya\u2019n\u0131n Atlantik k\u0131y\u0131s\u0131ndaki kolonilerinde, \u00f6nemli miktarda kur\u015fun ve alt\u0131n mevcuttu. Ayr\u0131ca Finikeliler, K\u0131br\u0131s\u2019taki ve Ege Denizi adalar\u0131ndaki kur\u015fun yataklar\u0131n\u0131 i\u015fletmi\u015flerdir.<\/p>\n<p>Alt\u0131nc\u0131 y\u00fczy\u0131lda Atina yak\u0131nlar\u0131nda ke\u015ffedilen kur\u015fun yata\u011f\u0131, Atina\u2019n\u0131n belli ba\u015fl\u0131 gelir kayna\u011f\u0131n\u0131 te\u015fkil etmi\u015ftir. Bu ocaklar M.S. ikinci y\u00fczy\u0131la kadar \u00e7al\u0131\u015fm\u0131\u015ft\u0131r. Daha sonra ilk elde etme i\u015flemi s\u0131ras\u0131nda de\u011ferlendirilmeyen cevher, tekrar muamele edilerek g\u00fcm\u00fc\u015f elde edilmi\u015ftir. Romal\u0131lar zaman\u0131nda kur\u015funun k\u0131ymetini ilk anlayan Sezar olmu\u015ftur. Kur\u015fun levhalar yan\u0131nda, 3 m\u2019lik su borular\u0131 yap\u0131lm\u0131\u015ft\u0131r. Borular, levhalar\u0131n eklenmesiyle elde edilmi\u015ftir.<\/p>\n<p>Kur\u015fun zehirlenmesinden haberleri olmad\u0131\u011f\u0131 ve daha uygun madde bulunamad\u0131\u011f\u0131 i\u00e7in Romal\u0131lar da Eski Yunanl\u0131lar gibi su da\u011f\u0131t\u0131m sistemlerini kur\u015fun borulardan meydana getirmi\u015flerdir. Kur\u015fun borular, g\u00fcn\u00fcm\u00fczde kanalizasyon borusu olarak yayg\u0131n bir \u015fekilde kullan\u0131lmaktad\u0131r. Romal\u0131lardan ba\u015flayarak, kur\u015fun, \u00e7at\u0131 kaplamalar\u0131nda kullan\u0131lm\u0131\u015ft\u0131r. Camilerin kubbelerinin kaplamas\u0131 kur\u015fundur. Ayr\u0131ca kur\u015fun, Osmanl\u0131 mimarlar\u0131 taraf\u0131ndan yap\u0131 ta\u015flar\u0131n\u0131n birbirine ba\u011flanmas\u0131nda, kolayca \u015fekil verildi\u011fi i\u00e7in, kullan\u0131lm\u0131\u015ft\u0131r.<\/p>\n<p>Kur\u015fun yumu\u015fak, mavimsi gri olup, yeni d\u00f6k\u00fcld\u00fc\u011f\u00fcnde veya kesildi\u011finde parlakt\u0131r. Ancak hava ile temas sonucu rengi matla\u015f\u0131r. Sanayi atmosferinde koyu gri veya siyaha d\u00f6n\u00fc\u015f\u00fcr. \u00c7ivi ile \u00e7izilebilir ve kolayca kesilebilir. K\u00e2\u011f\u0131tta iz b\u0131rakabilirse de, kur\u015fun kalemlerde\u00a0 kur\u015fun yerine granit kullan\u0131l\u0131r. Alt\u0131n hari\u00e7, g\u00fcnl\u00fck kullan\u0131lan veya \u00e7ok bilinen metallerin en a\u011f\u0131r\u0131d\u0131r. Kolayca \u015fekil verilebilir. Bak\u0131rla mukayese edilirse, kur\u015fun k\u00f6t\u00fc bir \u0131s\u0131 ve elektrik iletkenidir. Ses ve radyasyon ge\u00e7irgenli\u011fi de olduk\u00e7a azd\u0131r.<\/p>\n<p>Kur\u015fun ala\u015f\u0131mlar\u0131n\u0131n en \u00f6nemli kullanma yerleri, ak\u00fcm\u00fclat\u00f6rler, lehim, kur\u015fun borular, kablo kaplamas\u0131, cephane, boya ve benzin katk\u0131 maddeleridir. Ucuz olmas\u0131 ve kolayca d\u00f6k\u00fclebilmesi sebebiyle eskiden beri baz\u0131 \u015fekillerin yap\u0131m\u0131nda kullan\u0131lm\u0131\u015ft\u0131r. Seramikte dikkatsiz kullan\u0131lmas\u0131, kur\u015fun zehirlenmesine sebep olur.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kur\u015fun \u00e7ok eskiden beri bilinen ve kullan\u0131lan, dokuz kimyasal elementten biri olan, yumu\u015fak ve a\u011f\u0131r bir metaldir. Sembol\u00fc, Latince \u201cplumbum\u201d den dolay\u0131 \u201cPb\u201ddir. \u00c7ok eskiden beri kullan\u0131lmaktad\u0131r. \u0130lk zamanlar, g\u00fcm\u00fc\u015fle&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[92],"tags":[1024,1556,1056,1557],"class_list":["post-3243","post","type-post","status-publish","format-standard","hentry","category-bilim","tag-kursun","tag-kursun-madeni","tag-maden","tag-madenler"],"_links":{"self":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/3243"}],"collection":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3243"}],"version-history":[{"count":7,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/3243\/revisions"}],"predecessor-version":[{"id":7967,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/3243\/revisions\/7967"}],"wp:attachment":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}