{"id":5240,"date":"2021-11-18T09:31:31","date_gmt":"2021-11-18T08:31:31","guid":{"rendered":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/?p=5240"},"modified":"2021-12-08T17:49:12","modified_gmt":"2021-12-08T16:49:12","slug":"tinta-invisible","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/eso\/eso-2\/tinta-invisible\/","title":{"rendered":"Tinta invisible!"},"content":{"rendered":"<p>Els alumnes de l&#8217;optativa de codi secret en el marc de la setmana de la ci\u00e8ncia s&#8217;han introdu\u00eft en l&#8217;art d&#8217;amagar missatges. Aquesta disciplina es coneix amb el nom de esteganografia.<br \/>\nAmb aquests dos experiments els i les alumnes han apr\u00e8s que no es tracta de m\u00e0gia sin\u00f3 que \u00e9s ci\u00e8ncia.<br \/>\nS&#8217;han creat tintes invisibles amb diferents t\u00e8cniques: tinta invisible amb llimona i tinta invisible amb farina de blat de moro.<br \/>\nEn el primer cas hem apr\u00e8s qu\u00e8 \u00e9s una reacci\u00f3 de carbonitzaci\u00f3 i en el segon cas, hem vist que el mid\u00f3 reacciona amb el iode en dissoluci\u00f3 produint una reacci\u00f3 que dona com a resultats un color lil\u00f3s fosc.<br \/>\nHa estat una activitat molt enriquidora. Aqu\u00ed podeu veure una mostra dels missatges secrets escrits per als alumnes.<\/p>\n<p><a href=\"https:\/\/photos.app.goo.gl\/PnGu2eHGFnNu8qeN6\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-5241 size-medium\" src=\"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1527-COLLAGE-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1527-COLLAGE-300x300.jpg 300w, https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1527-COLLAGE-150x150.jpg 150w, https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1527-COLLAGE-768x768.jpg 768w, https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1527-COLLAGE.jpg 1012w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1559-COLLAGE.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-5242\" src=\"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1559-COLLAGE-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1559-COLLAGE-300x300.jpg 300w, https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1559-COLLAGE-1024x1024.jpg 1024w, https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1559-COLLAGE-150x150.jpg 150w, https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1559-COLLAGE-768x768.jpg 768w, https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-content\/uploads\/usu618\/2021\/11\/IMG_1559-COLLAGE.jpg 1350w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Els alumnes de l&#8217;optativa de codi secret en el marc de la setmana de la ci\u00e8ncia s&#8217;han introdu\u00eft en l&#8217;art d&#8217;amagar missatges. Aquesta disciplina es coneix amb el nom de esteganografia.<br \/>\nAmb aquests dos experiments els i les alumnes han apr\u00e8s que no es tracta de&hellip;  <a href=\"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/eso\/eso-2\/tinta-invisible\/\" title=\"Read Tinta invisible!\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[5,29],"tags":[],"class_list":["post-5240","post","type-post","status-publish","format-standard","hentry","category-eso-2","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-json\/wp\/v2\/posts\/5240","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-json\/wp\/v2\/comments?post=5240"}],"version-history":[{"count":1,"href":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-json\/wp\/v2\/posts\/5240\/revisions"}],"predecessor-version":[{"id":5243,"href":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-json\/wp\/v2\/posts\/5240\/revisions\/5243"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-json\/wp\/v2\/media?parent=5240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-json\/wp\/v2\/categories?post=5240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesdelvoltreganes\/wp-json\/wp\/v2\/tags?post=5240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}