{"id":9515,"date":"2023-02-20T16:16:40","date_gmt":"2023-02-20T15:16:40","guid":{"rendered":"https:\/\/www.zmc.com.tn\/?p=9515"},"modified":"2023-02-20T16:16:40","modified_gmt":"2023-02-20T15:16:40","slug":"la-manche-a-air-windsock","status":"publish","type":"post","link":"https:\/\/www.zmc.com.tn\/?p=9515","title":{"rendered":"La manche \u00e0 air\/Windsock."},"content":{"rendered":"<p><a href=\"https:\/\/www.zmc.com.tn\/?attachment_id=9519\" rel=\"attachment wp-att-9519\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignleft wp-image-9519 size-full\" src=\"https:\/\/www.zmc.com.tn\/wp-content\/uploads\/2023\/02\/20022023ps.png\" alt=\"\" width=\"238\" height=\"238\" srcset=\"https:\/\/www.zmc.com.tn\/wp-content\/uploads\/2023\/02\/20022023ps.png 238w, https:\/\/www.zmc.com.tn\/wp-content\/uploads\/2023\/02\/20022023ps-150x150.png 150w\" sizes=\"(max-width: 238px) 100vw, 238px\" \/><\/a>La\u00a0manche \u00e0 air, parfois appel\u00e9e la\u00a0manche \u00e0 vent, est un dispositif dont la forme permet d&rsquo;indiquer non seulement la direction du\u00a0<a href=\"https:\/\/fr.wikipedia.org\/wiki\/Vent\">vent<\/a>, mais aussi \u2014 contrairement \u00e0 la\u00a0<a href=\"https:\/\/fr.wikipedia.org\/wiki\/Girouette\">girouette<\/a>\u00a0\u2014 une estimation de sa\u00a0<a href=\"https:\/\/fr.wikipedia.org\/wiki\/Vitesse\">vitesse<\/a>.<\/p>\n<p>La manche \u00e0 air est constitu\u00e9e d&rsquo;un\u00a0<a href=\"https:\/\/fr.wikipedia.org\/wiki\/M%C3%A2t\">m\u00e2t<\/a>\u00a0auquel est attach\u00e9 un manchon\u00a0<a href=\"https:\/\/fr.wikipedia.org\/wiki\/C%C3%B4ne_(g%C3%A9om%C3%A9trie)\">conique<\/a>\u00a0en\u00a0<a href=\"https:\/\/fr.wikipedia.org\/wiki\/Textile\">tissu<\/a>, resserr\u00e9 \u00e0 son extr\u00e9mit\u00e9. Ce manchon comporte cinq anneaux alternant trois\u00a0<a href=\"https:\/\/fr.wikipedia.org\/wiki\/Rouge\">rouges<\/a>\u00a0et deux\u00a0<a href=\"https:\/\/fr.wikipedia.org\/wiki\/Blanc\">blancs<\/a>. L&rsquo;air entre par le gros bout du manchon, celui pr\u00e8s du m\u00e2t, et est soulev\u00e9 dans la direction oppos\u00e9e \u00e0 celle d&rsquo;o\u00f9 vient le vent. Chacune des bandes de couleur, lorsque gonfl\u00e9e par le vent, correspond \u00e0 environ 5 n\u0153uds (environ 9 km\/h)\u00a0; le manchon est donc \u00e0 l&rsquo;horizontale lorsque le vent souffle \u00e0 plus de 25\u00a0<a href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C5%93ud_(unit%C3%A9)\">n\u0153uds<\/a>\u00a0(environ 45 km\/h). Cela donne une estimation relativement pr\u00e9cise de la direction et de la vitesse du vent jusqu&rsquo;\u00e0 cette force.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La\u00a0manche \u00e0 air, parfois appel\u00e9e la\u00a0manche \u00e0 vent, est un dispositif dont la forme permet d&rsquo;indiquer non seulement la direction du\u00a0vent, mais aussi \u2014 contrairement \u00e0 la\u00a0girouette\u00a0\u2014 une estimation de sa\u00a0vitesse. La manche \u00e0 air est constitu\u00e9e d&rsquo;un\u00a0m\u00e2t\u00a0auquel est attach\u00e9 un manchon\u00a0conique\u00a0en\u00a0tissu, resserr\u00e9 \u00e0 son extr\u00e9mit\u00e9. Ce manchon comporte cinq anneaux alternant trois\u00a0rouges\u00a0et deux\u00a0blancs. L&rsquo;air entre par le gros bout du manchon, celui pr\u00e8s du m\u00e2t, et est soulev\u00e9 dans la direction oppos\u00e9e \u00e0 celle d&rsquo;o\u00f9 vient le vent. Chacune des bandes de couleur, lorsque gonfl\u00e9e par le vent, correspond&hellip;<\/p>\n","protected":false},"author":1,"featured_media":9519,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[94],"tags":[],"class_list":["post-9515","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-parlons-securite"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.zmc.com.tn\/index.php?rest_route=\/wp\/v2\/posts\/9515","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zmc.com.tn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zmc.com.tn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zmc.com.tn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zmc.com.tn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9515"}],"version-history":[{"count":1,"href":"https:\/\/www.zmc.com.tn\/index.php?rest_route=\/wp\/v2\/posts\/9515\/revisions"}],"predecessor-version":[{"id":9522,"href":"https:\/\/www.zmc.com.tn\/index.php?rest_route=\/wp\/v2\/posts\/9515\/revisions\/9522"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zmc.com.tn\/index.php?rest_route=\/wp\/v2\/media\/9519"}],"wp:attachment":[{"href":"https:\/\/www.zmc.com.tn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zmc.com.tn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zmc.com.tn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}