{"id":4716,"date":"2019-04-04T10:46:38","date_gmt":"2019-04-04T08:46:38","guid":{"rendered":"http:\/\/agora.xtec.cat\/esc-elfar\/?p=4716"},"modified":"2019-04-04T10:46:38","modified_gmt":"2019-04-04T08:46:38","slug":"el-disc-de-newton","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/esc-elfar\/nivells\/el-disc-de-newton\/","title":{"rendered":"El disc de Newton"},"content":{"rendered":"<p>L&#8217;\u00faltim tema de medi natural ens parla de les energies, la llum, el so i el color. El darrer concepte \u00e9s un contingut que no nom\u00e9s treballem a l&#8217;\u00e0rea de medi, tamb\u00e9 es d\u00f3na a Visual i Pl\u00e0stica. Aix\u00ed que, hi hem profunditzat a trav\u00e9s dels experiments i les deduccions que va fer un gran cient\u00edfic, Isaac Newton.<\/p>\n<p>Newton va descobrir el 1666 que la llum blanca pot dividir-se en els seus colors components mitjan\u00e7ant un prisma. Per fer-ho, va fer passar un raig de llum solar a trav\u00e9s d\u2019un orifici en una habitaci\u00f3 a les fosques perqu\u00e8 amb la inclinaci\u00f3 adequada, travess\u00e9s un prisma de vidre. D\u2019aquesta manera, a la sortida del raig de llum, va obtenir l&#8217;espectre visible de la llum solar, demostrant que aquesta est\u00e0 composta per infinitat de raigs simples amb diferents angles de refracci\u00f3 cada un.<\/p>\n<p>Per corroborar aquesta hip\u00f2tesi hi ha un dispositiu anomenat &#8220;Disc de Newton&#8221;. \u00c9s un dispositiu que consisteix en un cercle amb sectors pintats de colors: vermell, taronja, groc, verd, turquesa, blau i lila. En fer girar el disc a una gran velocitat, es veuen els colors combinats formant el color blanc. Aix\u00ed, es demostra que el color blanc est\u00e0 format pels set colors de l&#8217;Arc de Sant Mart\u00ed. A la classe quart n&#8217;hem realitzat un de casol\u00e0 amb materials ben senzills: un disc vell, una canica i els colors esmentats. En girar-lo hem comprovat la teoria de Newton.<\/p>\n<p><a href=\"https:\/\/photos.app.goo.gl\/bM4Ea7SQP6g3y2Gv6\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4720 aligncenter\" src=\"https:\/\/agora.xtec.cat\/esc-elfar\/wp-content\/uploads\/usu1629\/2019\/04\/disc-2.jpg\" alt=\"\" width=\"640\" height=\"480\" srcset=\"https:\/\/agora.xtec.cat\/esc-elfar\/wp-content\/uploads\/usu1629\/2019\/04\/disc-2.jpg 640w, https:\/\/agora.xtec.cat\/esc-elfar\/wp-content\/uploads\/usu1629\/2019\/04\/disc-2-300x225.jpg 300w, https:\/\/agora.xtec.cat\/esc-elfar\/wp-content\/uploads\/usu1629\/2019\/04\/disc-2-200x150.jpg 200w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&#8217;\u00faltim tema de medi natural ens parla de les energies, la llum, el so i el color. El darrer concepte \u00e9s un contingut que no nom\u00e9s treballem a l&#8217;\u00e0rea de medi, tamb\u00e9 es d\u00f3na a Visual i Pl\u00e0stica. Aix\u00ed que, hi hem profunditzat a trav\u00e9s&hellip;  <a href=\"https:\/\/agora.xtec.cat\/esc-elfar\/nivells\/el-disc-de-newton\/\" title=\"Read El disc de Newton\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":7,"featured_media":4719,"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,"footnotes":""},"categories":[1],"tags":[75,71,61,55,113],"class_list":["post-4716","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nivells","tag-4t","tag-cm","tag-primaria","tag-experimentacio","tag-medi"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/posts\/4716","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/comments?post=4716"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/posts\/4716\/revisions"}],"predecessor-version":[{"id":4741,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/posts\/4716\/revisions\/4741"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/media\/4719"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/media?parent=4716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/categories?post=4716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-elfar\/wp-json\/wp\/v2\/tags?post=4716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}