{"id":1836,"date":"2018-04-10T19:27:17","date_gmt":"2018-04-10T17:27:17","guid":{"rendered":"http:\/\/agora.xtec.cat\/institutgranollers\/?p=1836"},"modified":"2021-03-17T20:44:48","modified_gmt":"2021-03-17T19:44:48","slug":"participem-a-un-experiment-matematic-mundial-eratosthenes-experiment","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/institutgranollers\/portada\/participem-a-un-experiment-matematic-mundial-eratosthenes-experiment\/","title":{"rendered":"Participem en un experiment matem\u00e0tic mundial: Eratosthenes Experiment!!"},"content":{"rendered":"<p>L&#8217;alumnat de 3r ESO hem participat a <a href=\"http:\/\/eratosthenes.ea.gr\/\" target=\"_blank\" rel=\"noopener noreferrer\">Eratosthenes Experiment<\/a>, una iniciativa a nivell mundial per calcular el radi de la Terra.\u00a0Per a fer-ho, hem usat el mateix m\u00e8tode que va utilitzar l&#8217;ilustre matem\u00e0tic grec Eratostenes. Aquest matem\u00e0tic va obtenir el primer c\u00e0lcul aproximat correcte del radi de la Terra utilitzant la difer\u00e8ncia que hi havia en les ombres entre Alexandria i Syene, i fent c\u00e0lculs mitjan\u00e7ant estrat\u00e8gies geom\u00e8triques.<\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/eratostenes.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1837\" src=\"http:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/eratostenes.jpg\" alt=\"\" width=\"481\" height=\"241\" srcset=\"https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/eratostenes.jpg 425w, https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/eratostenes-300x150.jpg 300w\" sizes=\"auto, (max-width: 481px) 100vw, 481px\" \/><\/a> \u00a0<a href=\"http:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0676.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1839\" src=\"http:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0676.jpg\" alt=\"\" width=\"318\" height=\"239\" srcset=\"https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0676.jpg 900w, https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0676-300x225.jpg 300w, https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0676-768x576.jpg 768w, https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0676-200x150.jpg 200w\" sizes=\"auto, (max-width: 318px) 100vw, 318px\" \/><\/a><\/p>\n<p>L&#8217;experiment es va fer el dia 21 de mar\u00e7 a les\u00a012:48 hora local, en qu\u00e8 el Sol estava just a sobre de l&#8217;Equador. Per grups, alumnes dels grups lambda i kappa vam anar al pati per a meusurar l&#8217;ombra d&#8217;un pal d&#8217;1 m perpendicular a terra. Vam\u00a0agafar 5 dades\/mesures dels cm que mesurava l\u2019ombra. Amb aquestes dades, vam poder saber el radi de la Terra. Ja que en l\u2019equador, just aquell dia a les 12:48 hora local, el sol estava just a sobre de l\u2019equador. Aix\u00f3 vol dir que no hi hav\u00eda ombra. Nom\u00e9s vam haver d\u2019anar al Google Maps per saber la dist\u00e0ncia del Marta Estrada fins l\u2019equador. Llavors amb diversos c\u00e0lculs matem\u00e0tics vam aconseguir saber el radi de la Terra.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1838\" src=\"http:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0123.jpg\" alt=\"\" width=\"443\" height=\"249\" srcset=\"https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0123.jpg 900w, https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0123-300x169.jpg 300w, https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0123-768x432.jpg 768w\" sizes=\"auto, (max-width: 443px) 100vw, 443px\" \/>\u00a0\u00a0<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1840\" src=\"http:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0692.jpg\" alt=\"\" width=\"336\" height=\"251\" srcset=\"https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0692.jpg 900w, https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0692-300x225.jpg 300w, https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0692-768x576.jpg 768w, https:\/\/agora.xtec.cat\/institutgranollers\/wp-content\/uploads\/usu289\/2018\/04\/IMG_0692-200x150.jpg 200w\" sizes=\"auto, (max-width: 336px) 100vw, 336px\" \/><\/p>\n<p style=\"text-align: right;\">Iv\u00e1n Valenzuela, 3er Lambda<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&#8217;alumnat de 3r ESO hem participat a <a href=\"http:\/\/eratosthenes.ea.gr\/\" target=\"_blank\" rel=\"noopener noreferrer\">Eratosthenes Experiment<\/a>, una iniciativa a nivell mundial per calcular el radi de la Terra.\u00a0Per a fer-ho, hem usat el mateix m\u00e8tode que va utilitzar l&#8217;ilustre matem\u00e0tic grec Eratostenes. Aquest matem\u00e0tic va obtenir el primer&hellip;  <a href=\"https:\/\/agora.xtec.cat\/institutgranollers\/portada\/participem-a-un-experiment-matematic-mundial-eratosthenes-experiment\/\" title=\"Read Participem en un experiment matem\u00e0tic mundial: Eratosthenes Experiment!!\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":1839,"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":[29],"tags":[106,115,119],"class_list":["post-1836","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-portada","tag-activitats-externes-i-xerrades","tag-projectesarea","tag-stem"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/institutgranollers\/wp-json\/wp\/v2\/posts\/1836","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/institutgranollers\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/institutgranollers\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/institutgranollers\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/institutgranollers\/wp-json\/wp\/v2\/comments?post=1836"}],"version-history":[{"count":2,"href":"https:\/\/agora.xtec.cat\/institutgranollers\/wp-json\/wp\/v2\/posts\/1836\/revisions"}],"predecessor-version":[{"id":1842,"href":"https:\/\/agora.xtec.cat\/institutgranollers\/wp-json\/wp\/v2\/posts\/1836\/revisions\/1842"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/institutgranollers\/wp-json\/wp\/v2\/media\/1839"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/institutgranollers\/wp-json\/wp\/v2\/media?parent=1836"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/institutgranollers\/wp-json\/wp\/v2\/categories?post=1836"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/institutgranollers\/wp-json\/wp\/v2\/tags?post=1836"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}