{"id":44396,"date":"2020-02-16T06:00:51","date_gmt":"2020-02-16T03:00:51","guid":{"rendered":"https:\/\/www.bghaber.org\/bghaber\/?p=44396"},"modified":"2020-02-15T09:34:37","modified_gmt":"2020-02-15T06:34:37","slug":"dunya-radyo-gunu-13-subat","status":"publish","type":"post","link":"https:\/\/www.bghaber.org\/bghaber\/dunya-radyo-gunu-13-subat\/","title":{"rendered":"D\u00fcnya Radyo G\u00fcn\u00fc &#8211; 13 \u015eubat"},"content":{"rendered":"<p>1912 y\u0131l\u0131nda Birle\u015fmi\u015f Milletler E\u011fitim, Bilim ve K\u00fclt\u00fcr \u00d6rg\u00fct\u00fc (UNESCO) taraf\u0131ndan bir ileti\u015fim arac\u0131 olarak radyonun \u00f6nemine de\u011finmek ve uluslararas\u0131 radyo yay\u0131nc\u0131lar\u0131 aras\u0131ndaki etkile\u015fimi art\u0131rmak i\u00e7in <strong>13 \u015eubat D\u00fcnya Radyo G\u00fcn\u00fc <\/strong>olarak ilan edildi.<strong>\u00a0<\/strong><\/p>\n<h4><strong>D\u00dcNYADA NE KADAR RADYO \u0130STASYONU VAR?<\/strong><\/h4>\n<p>Verilere g\u00f6re, d\u00fcnya genelinde yakla\u015f\u0131k 44 bin radyo istasyonu bulunuyor. Radyo say\u0131s\u0131 \u00f6zellikle Afrika&#8217;da hala gazete ve televizyon say\u0131s\u0131ndan fazla olmas\u0131yla dikkati \u00e7ekiyor.<\/p>\n<p>Hanelerin y\u00fczde 80 ile 90&#8217;\u0131nda radyo bulunan Afrika&#8217;da n\u00fcfusun b\u00fcy\u00fck bir k\u0131sm\u0131n\u0131n temel ileti\u015fim arac\u0131 olarak radyo \u00f6n planda yer al\u0131yor. Tanzanya&#8217;da n\u00fcfusun y\u00fczde 83&#8217;\u00fc, Zambiya&#8217;da ise y\u00fczde 85&#8217;i haberleri radyodan dinliyor.<\/p>\n<div><!-- 80-haber-detay-yazi-ici-3 --> <ins data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-1957702275534731\" data-ad-slot=\"3148182954\"><\/ins><\/div>\n<p>Geli\u015fmi\u015f \u00fclkelerde de san\u0131lan\u0131n aksine radyo kullan\u0131m\u0131 eskisi kadar olmasa da hala yayg\u0131n.<\/p>\n<h4><strong>RADYONUN TAR\u0130H\u00c7ES\u0130\u00a0<\/strong><\/h4>\n<p>Elektromanyetik dalgalar\u0131n varl\u0131\u011f\u0131n\u0131 \u0130ngiliz fizik\u00e7i H. Hertz 1887&#8217;de deneysel olarak elde etmeyi ba\u015fard\u0131. Hertz &#8216;in deneylerini yenileyen \u0130talyan fizik\u00e7i G. Marconi, dalgalar\u0131 ilkin 9 metre, sonradan 275 metre ve 3 kilometrelik uzakl\u0131klara iletmeyi ba\u015fard\u0131.<\/p><div id=\"bghab-3046856800\" class=\"bghab-icerik-icine bghab-entity-placement\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6203283170189293\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block; text-align:center;\" data-ad-client=\"ca-pub-6203283170189293\" \ndata-ad-slot=\"7303146466\" \ndata-ad-layout=\"in-article\"\ndata-ad-format=\"fluid\" data-full-width-responsive=\"true\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>\n<p>1901&#8217;de de Atlas Okyanusu \u00f6tesine ilk telsiz mesaj\u0131n\u0131 iletti. Radyonun geli\u015fmesi a\u00e7\u0131s\u0131ndan bundan sonraki en b\u00fcy\u00fck ad\u0131m, \u0130ngiliz fizik\u00e7i J. A. Fleming&#8217;in ilk elekrotlu lambay\u0131 geli\u015ftirmesi oldu. \u0130\u00e7inden yaln\u0131zca bir y\u00f6nde elektrik ak\u0131m\u0131 ge\u00e7ebilen diyot, do\u011frultucu i\u015flevi yapt\u0131\u011f\u0131ndan \u00f6t\u00fcr\u00fc al\u0131c\u0131larda demod\u00fclat\u00f6r olarak kullan\u0131labiliyordu. \u0130ki elektrotlu lambada anot ile katot aras\u0131na \u0131zgara bi\u00e7iminde \u00fc\u00e7\u00fcnc\u00fc bir elektrota yerle\u015ftirerek 1906&#8217;da triyot lambay\u0131 ger\u00e7ekle\u015ftiren ABD&#8217;li mucit Lee De Forest, b\u00f6ylece, radyo verici ve al\u0131c\u0131lar\u0131nda asilat\u00f6r ve y\u00fckselte\u00e7 olarak kullan\u0131labilen ve bu nedenle \u00f6nemli bir geli\u015fmeyi simgeleyen bulu\u015fu ortaya koymu\u015f oluyordu.<\/p>\n<p>Triyot lamban\u0131n titre\u015fim \u00fcretici olarak kullan\u0131labilece\u011fini ABD&#8217;li mucit Edwin H. Avustralya&#8217;ya ilk telsiz mesaj\u0131 1918&#8217;de ula\u015ft\u0131r\u0131ld\u0131. \u00d6nceleri yaln\u0131zca mors kodlu telgraf sinyalleri iletilebilirken, okyanus \u00f6tesiyle ilk kez 1915&#8217;te konu\u015fma i\u00e7eren ileti\u015fim sa\u011flanabildi.<\/p>\n<div><!-- 80-haber-detay-yazi-ici-4 --> <ins data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-1957702275534731\" data-ad-slot=\"9330447923\"><\/ins><\/div>\n<p>M\u00fczik ve konu\u015fma i\u00e7eren k\u0131sa erimli ilk radyo yay\u0131n\u0131 ise 24 Aral\u0131k 1906&#8217;da ABD&#8217;li mucit R.A Fessendon taraf\u0131ndan ger\u00e7ekle\u015ftirildi. E.H. Armstrong&#8217;un radyonun geli\u015fme \u00e7izgisinde \u00f6nemli bir yeri vard\u0131r. Geri besleme ilkesini bulan ve bu ilkeden yararlanarak triyotlu asilat\u00f6r devresini 1912&#8217;de geli\u015ftiren Armstrong I. D\u00fcnya Sava\u015f\u0131 s\u0131ras\u0131nda da s\u00fcperhederodin al\u0131c\u0131n\u0131 ilkelerini ortaya koydu; Armstrong&#8217;un bu alandaki son ve en \u00f6nemli bulu\u015fu ise frekans mod\u00fclasyonu olmu\u015ftur (1993).<\/p>\n<p>Radyo tekni\u011fi a\u00e7\u0131s\u0131ndan bundan sonraki \u00f6nemli ad\u0131mlar 1948&#8217;de transist\u00f6r\u00fcn bulu\u015fu, bask\u0131 devre tekni\u011finin ve 1960&#8217;larda t\u00fcmle\u015fik devrelerin geli\u015ftirilmesi olmu\u015ftur.<\/p>\n<p>&nbsp;<\/p><div id=\"bghab-884962078\" class=\"bghab-icerik-icine-10-paragraf bghab-entity-placement\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6203283170189293\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block; text-align:center;\" data-ad-client=\"ca-pub-6203283170189293\" \ndata-ad-slot=\"7303146466\" \ndata-ad-layout=\"in-article\"\ndata-ad-format=\"fluid\" data-full-width-responsive=\"true\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Murat Ulut\u00fcrk<br \/>\nbghaber.org Koordinat\u00f6r\u00fc<\/p>\n<div id=\"bghab-1206071091\" class=\"bghab-yazi-altinda bghab-entity-placement\"><div class=\"bghab-adlabel\">Reklamlar<\/div><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- bghaber-yaz\u0131-sonu -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-6203283170189293\"\r\n     data-ad-slot=\"4222328180\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div><br style=\"clear: both; display: block; float: none;\"\/>","protected":false},"excerpt":{"rendered":"<p>1912 y\u0131l\u0131nda Birle\u015fmi\u015f Milletler E\u011fitim, Bilim ve K\u00fclt\u00fcr \u00d6rg\u00fct\u00fc (UNESCO) taraf\u0131ndan bir ileti\u015fim arac\u0131 olarak radyonun \u00f6nemine de\u011finmek ve uluslararas\u0131 radyo yay\u0131nc\u0131lar\u0131 aras\u0131ndaki etkile\u015fimi art\u0131rmak<\/p>\n","protected":false},"author":29,"featured_media":27915,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[775],"class_list":["post-44396","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-yorum","tag-radyo"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.bghaber.org\/bghaber\/wp-content\/uploads\/2018\/03\/murat0.jpg?fit=510%2C512&ssl=1","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pc2PfJ-by4","_links":{"self":[{"href":"https:\/\/www.bghaber.org\/bghaber\/wp-json\/wp\/v2\/posts\/44396","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bghaber.org\/bghaber\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bghaber.org\/bghaber\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bghaber.org\/bghaber\/wp-json\/wp\/v2\/users\/29"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bghaber.org\/bghaber\/wp-json\/wp\/v2\/comments?post=44396"}],"version-history":[{"count":0,"href":"https:\/\/www.bghaber.org\/bghaber\/wp-json\/wp\/v2\/posts\/44396\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bghaber.org\/bghaber\/wp-json\/wp\/v2\/media\/27915"}],"wp:attachment":[{"href":"https:\/\/www.bghaber.org\/bghaber\/wp-json\/wp\/v2\/media?parent=44396"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bghaber.org\/bghaber\/wp-json\/wp\/v2\/categories?post=44396"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bghaber.org\/bghaber\/wp-json\/wp\/v2\/tags?post=44396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}