Els alumnes de tecno-f\u00edsica del curs d\u2019acc\u00e9s a grau superior de l\u2019institut Mil\u00e0 i Fontanals d\u2019Igualada, Marc Alcaraz, Dani Paun i Pedro Guisado, han dissenyat i muntat un dispositiu electr\u00f2nic per mesurar la gravetat d’objectes en caiguda lliure.
\nDos fotoc\u00e8l\u00b7lules de reflexi\u00f3 separades a una distancia precisa d\u2019un metre, capturen els dos instants en el que un determinat objecte, en caiguda lliure, les travessa. Aquests dos instants determinen el temps que l\u2019objecte triga en recorre un metre de distancia. Un cron\u00f2metre electr\u00f2nic, activat per les fotoc\u00e8l\u00b7lules, mesura el temps de caiguda amb una precisi\u00f3 d\u2019una cent\u00e8sima de segon i el mostra en un display de 7 segments.
\nEls resultats obtinguts son prou satisfactoris com per, des de la nostra mod\u00e8stia, validar els c\u00e0lculs realitzats fa m\u00e9s de 300 anys pel nostre m\u00e9s que admirat Sir Isaac Newton i que 100 anys m\u00e9s tard va corroborar el f\u00edsic angles Henry Cavendish amb una mesura rudiment\u00e0ria per\u00f2 efectiva, sense fotoc\u00e8l\u00b7lules ni cron\u00f2metres electr\u00f2nics.<\/p>\n
https:\/\/www.youtube.com\/watch?v=ncYGpwsNoD8<\/p>\n","protected":false},"excerpt":{"rendered":"
Els alumnes de tecno-f\u00edsica del curs d\u2019acc\u00e9s a grau superior de l\u2019institut Mil\u00e0 i Fontanals d\u2019Igualada, Marc Alcaraz, Dani Paun i Pedro Guisado, han dissenyat i muntat un dispositiu electr\u00f2nic per mesurar la gravetat d’objectes en caiguda lliure.
\nDos fotoc\u00e8l\u00b7lules de reflexi\u00f3 separades a una distancia… Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"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,"footnotes":""},"categories":[29],"tags":[],"class_list":["post-565","post","type-post","status-publish","format-standard","hentry","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/iesmila\/wp-json\/wp\/v2\/posts\/565","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/iesmila\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/iesmila\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesmila\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesmila\/wp-json\/wp\/v2\/comments?post=565"}],"version-history":[{"count":1,"href":"https:\/\/agora.xtec.cat\/iesmila\/wp-json\/wp\/v2\/posts\/565\/revisions"}],"predecessor-version":[{"id":566,"href":"https:\/\/agora.xtec.cat\/iesmila\/wp-json\/wp\/v2\/posts\/565\/revisions\/566"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/iesmila\/wp-json\/wp\/v2\/media?parent=565"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesmila\/wp-json\/wp\/v2\/categories?post=565"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iesmila\/wp-json\/wp\/v2\/tags?post=565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}