{"id":9105,"date":"2019-03-25T13:12:03","date_gmt":"2019-03-25T12:12:03","guid":{"rendered":"http:\/\/agora.xtec.cat\/escola-abelferrater\/?p=9105"},"modified":"2019-04-10T13:44:47","modified_gmt":"2019-04-10T11:44:47","slug":"els-colors-de-larc-de-sant-marti","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/escola-abelferrater\/general\/els-colors-de-larc-de-sant-marti\/","title":{"rendered":"ELS COLORS DE L’ARC DE SANT MART\u00cd"},"content":{"rendered":"

El passat dimecres vam fer un experiment d’observar la descomposici\u00f3 de la llum blanca<\/strong>.<\/p>\n

El material<\/strong> que vam utilitzar va ser:<\/p>\n

    \n
  1. Un recipient gros (bid\u00f3, palangana…) ple d\u2019aigua.<\/li>\n
  2. Un mirall pla<\/li>\n
  3. Una llanterna potent que projecti un feix fi (es pot tapar parcialment el focus amb una cartolina foradada pel centre)<\/li>\n
  4. Plastilina.<\/li>\n<\/ol>\n

    \"\"<\/a><\/p>\n

    Els passos que van seguir va ser:<\/strong><\/p>\n

    Primerament, vam entrar en una habitaci\u00f3\u00a0totalment a les fosques i vam preparar el recipient amb aigua i la llanterna.
    \nSeguidament, vam posar el mirall dins de l\u2019aigua amb una inclinaci\u00f3 d\u2019uns 45\u00ba i\u00a0 fixat amb la plastilina.
    \nDespr\u00e9s, il\u00b7lumin\u00e0rem\u00a0 el mirall amb el raig de llum a trav\u00e9s de l\u2019aigua.
    \nPer acabar, es va observar que la llum reflectida ja no era blanca, sin\u00f3 que tenia els colors de l\u2019arc de Sant Mart\u00ed.<\/p>\n

    \"\"<\/a><\/p>\n

    Despr\u00e9s vam extreure les seg\u00fcents conclusions<\/em>:<\/p>\n

    La llum blanca es descompon en llums de diferents colors, quan travessa algun obstacle que fa que les diferents ones que la constitueixen viatgin a velocitats diferents.
    \nQuan la llum de la llanterna penetra en l\u2019aigua, la seva velocitat canvia, igual que quan en surt despr\u00e9s d\u2019haver-se reflectit al mirall. Per aix\u00f2 es descompon i es veuen els colors de l\u2019arc de Sant Mart\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"

    El passat dimecres vam fer un experiment d’observar la descomposici\u00f3 de la llum blanca. El material que vam utilitzar va ser: Un recipient gros (bid\u00f3, palangana…) ple d\u2019aigua. Un mirall pla Una llanterna potent que projecti un feix fi (es pot tapar parcialment el focus amb una cartolina foradada pel centre) Plastilina. Els passos que […]<\/p>\n","protected":false},"author":25,"featured_media":9108,"comment_status":"open","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,"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":[1],"tags":[492,503],"class_list":["post-9105","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","tag-experimentacio","tag-medi-natural"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/escola-abelferrater\/wp-json\/wp\/v2\/posts\/9105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/escola-abelferrater\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/escola-abelferrater\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/escola-abelferrater\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/escola-abelferrater\/wp-json\/wp\/v2\/comments?post=9105"}],"version-history":[{"count":2,"href":"https:\/\/agora.xtec.cat\/escola-abelferrater\/wp-json\/wp\/v2\/posts\/9105\/revisions"}],"predecessor-version":[{"id":9112,"href":"https:\/\/agora.xtec.cat\/escola-abelferrater\/wp-json\/wp\/v2\/posts\/9105\/revisions\/9112"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/escola-abelferrater\/wp-json\/wp\/v2\/media\/9108"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/escola-abelferrater\/wp-json\/wp\/v2\/media?parent=9105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/escola-abelferrater\/wp-json\/wp\/v2\/categories?post=9105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/escola-abelferrater\/wp-json\/wp\/v2\/tags?post=9105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}