{"id":212,"date":"2012-02-07T13:47:24","date_gmt":"2012-02-07T12:47:24","guid":{"rendered":"https:\/\/blogs.ua.es\/jjrr2011\/?p=212"},"modified":"2012-02-29T10:49:54","modified_gmt":"2012-02-29T09:49:54","slug":"practica-1","status":"publish","type":"post","link":"https:\/\/blogs.ua.es\/jjrr2011\/2012\/02\/07\/practica-1\/","title":{"rendered":"Pr\u00e0ctica 1. Mesures de longituds"},"content":{"rendered":"<p style=\"text-align: justify\">Les pr\u00e0ctiques de laboratori s\u00f3n fonamentals per entendre molts fen\u00f2mens f\u00edsics, tractament de dades experimentals i presentaci\u00f3 de treballs t\u00e8cnics. En aquesta primera pr\u00e0ctica s&#8217;explica un instrument per a mesurar longituds i els seus errors. Com a exercici es tracta de deduir el valor del volum d&#8217;un cilindre a partir de les longituds que es mesuren amb el <strong>peu de rei<\/strong> en aquest v\u00eddeo.<\/p>\n<p><code>[kml_flashembed movie=\"http:\/\/www.youtube.com\/v\/Htuc2Py1vVc\" width=\"396\" height=\"297\" wmode=\"transparent\" \/]<\/code><\/p>\n<p style=\"text-align: justify\">El <strong>micr\u00f2metre<\/strong>, tamb\u00e9 anomenat cargol de <strong>Palmer<\/strong>, \u00e9s un aparell que serveix per a mesurar amb precisi\u00f3 dimensions de l&#8217;ordre de cent\u00e8simes de mil\u00b7l\u00edmetre. L&#8217;instrument es basa en un cargol de pas constant roscat interiorment que en anar girant despla\u00e7a un tambor graduat on indica la dist\u00e0ncia recorreguda linealment pel cargol. El v\u00eddeo seg\u00fcent explica el seu funcionament i un exemple de com s&#8217;utilitza per a mesurar longituds.<\/p>\n<p><code>[kml_flashembed movie=\"http:\/\/www.youtube.com\/v\/2986xttTaRc\" width=\"396\" height=\"297\" wmode=\"transparent\" \/]<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les pr\u00e0ctiques de laboratori s\u00f3n fonamentals per entendre molts fen\u00f2mens f\u00edsics, tractament de dades experimentals i presentaci\u00f3 de treballs t\u00e8cnics. En aquesta primera pr\u00e0ctica s&#8217;explica un instrument per a mesurar longituds i els seus errors. Com a exercici es tracta de deduir el valor del volum d&#8217;un cilindre a partir de les longituds que es [&hellip;]<\/p>\n","protected":false},"author":2285,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82858,82860,82859],"tags":[82856,135912,82857,135876],"class_list":["post-212","post","type-post","status-publish","format-standard","hentry","category-assignatura-2","category-materials-docents","category-objectius","tag-assignatura","tag-ensenyament-aprenentatge","tag-grau","tag-laboratori"],"_links":{"self":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/posts\/212","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/users\/2285"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/comments?post=212"}],"version-history":[{"count":9,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/posts\/212\/revisions"}],"predecessor-version":[{"id":263,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/posts\/212\/revisions\/263"}],"wp:attachment":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/media?parent=212"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/categories?post=212"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/tags?post=212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}