{"id":1410,"date":"2017-04-18T08:53:14","date_gmt":"2017-04-18T06:53:14","guid":{"rendered":"http:\/\/agora.xtec.cat\/iesjtapiro\/?p=1410"},"modified":"2017-04-18T08:53:14","modified_gmt":"2017-04-18T06:53:14","slug":"il%c2%b7lusions-optiques","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/iesjtapiro\/artiop\/il%c2%b7lusions-optiques\/","title":{"rendered":"Il\u00b7lusions \u00f2ptiques"},"content":{"rendered":"<p>En aquest article us\u00a0volem demostrar que no controlem al\u00a0100% el nostre cervell. De vegades el que veiem no \u00e9s el que creiem, perqu\u00e8\u00a0la vista ens enganya. Veiem sempre el que al nostre cervell li sembla. A\u00a0continuaci\u00f3 veureu uns exemples d&#8217;aquests petits enganys:<\/p>\n<h4>1. Il\u00b7lusi\u00f3 \u00f2ptica de grisos<\/h4>\n<p>En aquesta il\u00b7lusi\u00f3 \u00f2ptica veiem dos quadrats grisos aparentment de dues tonalitats diferents: el de dalt fosc i el de sota gris m\u00e9s clar:<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/Cub-Gris-o-blanc.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1414\" src=\"http:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/Cub-Gris-o-blanc.jpg\" alt=\"cub-gris-o-blanc\" width=\"332\" height=\"205\" srcset=\"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/Cub-Gris-o-blanc.jpg 600w, https:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/Cub-Gris-o-blanc-300x186.jpg 300w\" sizes=\"auto, (max-width: 332px) 100vw, 332px\" \/><\/a><\/p>\n<p>Per veure l&#8217;efecte hem de posar el dit de manera que tapem la l\u00ednia negra que divideix els dos quadrats.<\/p>\n<p><strong>2. Punts liles o verds o&#8230; Desapareixen<\/strong><\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/ZRhSWd5.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1416\" src=\"http:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/ZRhSWd5.gif\" alt=\"zrhswd5\" width=\"248\" height=\"248\" \/><\/a><\/p>\n<h4><strong>3. 5 o 2\u00a0apunts<\/strong><\/h4>\n<p>Concentra la teva vista nom\u00e9s a la creu del mig i poc a poc anir\u00e0s veient com primer apareix un punt verd que passa per damunt dels liles fins que nom\u00e9s queda el punt verd donant voltes sol.<\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/eKcqsmnPhACBy.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1418\" src=\"http:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/eKcqsmnPhACBy.gif\" alt=\"ekcqsmnphacby\" width=\"303\" height=\"171\" \/><\/a><\/p>\n<h4>4. A i B, diferents colors?<\/h4>\n<p>El <em>Checker-Shadow Illusion<\/em>\u00a0fa que els quadres A i B es vegin d&#8217;un color diferent perqu\u00e8 B est\u00e0 envoltat de quadrats m\u00e9s foscos. Per\u00f2 si et fixes en la imatge de sota, descobrir\u00e0s que els teus ulls t&#8217;han jugat un truc sensacional. Simplement posa dos llapis al costat de les dues lletres i veur\u00e0s que els quadres s\u00f3n del mateix color.<\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/enhanced-buzz-12397-1425070909-5.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1451\" src=\"http:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/enhanced-buzz-12397-1425070909-5.jpg\" alt=\"enhanced-buzz-12397-1425070909-5\" width=\"400\" height=\"308\" srcset=\"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/enhanced-buzz-12397-1425070909-5.jpg 400w, https:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/enhanced-buzz-12397-1425070909-5-300x231.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><\/p>\n<h4>5. Michael Jackson?<\/h4>\n<p>Si creues els ulls mentre mires l&#8217;imatge veur\u00e0s el rei del pop. Es tracta simplement que alguns dels punts tenen un dibuix a sobre camuflat, alguns punts son mes amples que altres a la vegada que tenen alguns espais en blanc mes grans.<\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/ilusiones_opticas_2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1469\" src=\"http:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/ilusiones_opticas_2.jpg\" alt=\"ilusiones_opticas_2\" width=\"334\" height=\"364\" srcset=\"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/ilusiones_opticas_2.jpg 650w, https:\/\/agora.xtec.cat\/iesjtapiro\/wp-content\/uploads\/usu514\/2017\/03\/ilusiones_opticas_2-275x300.jpg 275w\" sizes=\"auto, (max-width: 334px) 100vw, 334px\" \/><\/a><\/p>\n<p>Per veure mes il\u00b7lusions \u00f2ptiques, podeu entrar en aquesta p\u00e0gina web:<\/p>\n<p><a href=\"http:\/\/verne.elpais.com\/verne\/2016\/01\/27\/articulo\/1453897011_477533.html\">http:\/\/verne.elpais.com\/verne\/2016\/01\/27\/articulo\/1453897011_477533.html<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>En aquest article us\u00a0volem demostrar que no controlem al\u00a0100% el nostre cervell. De vegades el que veiem no \u00e9s el que creiem, perqu\u00e8\u00a0la vista ens enganya. Veiem sempre el que al nostre cervell li sembla. A\u00a0continuaci\u00f3 veureu uns exemples d&#8217;aquests petits enganys: 1. Il\u00b7lusi\u00f3 \u00f2ptica de grisos En aquesta il\u00b7lusi\u00f3 \u00f2ptica veiem dos quadrats grisos [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1414,"comment_status":"open","ping_status":"open","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,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[126],"tags":[192,193],"class_list":["post-1410","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-artiop","tag-illusions","tag-optiques"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-json\/wp\/v2\/posts\/1410","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-json\/wp\/v2\/comments?post=1410"}],"version-history":[{"count":4,"href":"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-json\/wp\/v2\/posts\/1410\/revisions"}],"predecessor-version":[{"id":1571,"href":"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-json\/wp\/v2\/posts\/1410\/revisions\/1571"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-json\/wp\/v2\/media\/1414"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-json\/wp\/v2\/media?parent=1410"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-json\/wp\/v2\/categories?post=1410"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesjtapiro\/wp-json\/wp\/v2\/tags?post=1410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}