{"id":1017,"date":"2018-09-13T18:33:09","date_gmt":"2018-09-13T16:33:09","guid":{"rendered":"http:\/\/eurekaweb.fr\/wp\/?p=1017"},"modified":"2019-06-04T17:56:22","modified_gmt":"2019-06-04T15:56:22","slug":"radar-1940","status":"publish","type":"post","link":"https:\/\/eurekaweb.fr\/wp\/radar-1940\/","title":{"rendered":"Radar (1940)"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;1017&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 vote)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Radar (1940)&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Rate this post<\/span>\n    <\/div>\n    <\/div>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/eurekaweb.fr\/wp\/wp-content\/uploads\/2013\/09\/radar-daimler1s.jpg?resize=150%2C198\" alt=\"radar-daimler1s\" width=\"150\" height=\"198\" class=\"aligncenter size-full wp-image-1018\" \/><\/p>\n<p style=\"text-align: justify;\">La cr\u00e9ation des radars a \u00e9t\u00e9 revendiqu\u00e9e par les Britanniques qui ont r\u00e9ussi \u00e0 r\u00e9pandre cette id\u00e9e pendant la guerre. Le radar (abr\u00e9viation de Radio Detection And Ranging) serait donc n\u00e9 en 1940, en Angleterre. Son apparition avait \u00e9t\u00e9 pr\u00e9c\u00e9d\u00e9e de nombreux travaux (Hertz en 1886, Tesla en 1900, brevet de C. H\u00fclsemeyer pour un \u00ab d\u00e9tecteur d\u2019obstacle \u00e0 ondes radio continues \u00bb en 1904, etc).<br \/>\nIl faut noter toutefois que des documents officiels anglais ou am\u00e9ricains d\u00e9cernent la paternit\u00e9 du radar aux Fran\u00e7ais. Le 20 juillet 1934, un brevet de nouveau syst\u00e8me de rep\u00e9rage d\u2019obstacles et ses applications avait \u00e9t\u00e9 d\u00e9pos\u00e9 au nom de la Compagnie g\u00e9n\u00e9rale de T\u00e9l\u00e9graphie sans fil. C&rsquo;est \u00e0 l&rsquo;\u00e9quipe d&rsquo;Emile GIRARDEAU que l\u2019on doit donc le RADAR. Le d\u00e9veloppement consid\u00e9rable de celui-ci par les Alli\u00e9s, sur les bases apport\u00e9es par les Fran\u00e7ais, fut l\u2019un des facteurs techniques les plus importants de la victoire.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La cr\u00e9ation des radars a \u00e9t\u00e9 revendiqu\u00e9e par les Britanniques qui ont r\u00e9ussi \u00e0 r\u00e9pandre cette id\u00e9e pendant la guerre. Le radar (abr\u00e9viation de Radio <\/p>\n","protected":false},"author":1,"featured_media":1018,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[19],"tags":[12,13,14,456],"class_list":["post-1017","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-armes-et-defense","tag-eurekaweb","tag-invention","tag-inventions","tag-radar","has_thumb"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Radar (1940)<\/title>\n<meta name=\"description\" content=\"La cr\u00e9ation des radars a \u00e9t\u00e9 revendiqu\u00e9e par les Britanniques qui ont r\u00e9ussi \u00e0 r\u00e9pandre cette id\u00e9e pendant la guerre. 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