En f\u00edsica, la difracci\u00f3 \u00e9s un fenomen f\u00edsic caracter\u00edstic de les ones en general i es fa present quan una ona es troba amb un obstacle en el seu cam\u00ed. Aquest obstacle la desvia, amb la producci\u00f3 d\u2019uns resultats dependents de la naturalesa d\u2019aquesta ona.<\/p>\n
Es tracta d\u2019un fenomen present en les nostres vides, tant quan anem per la carretera i veiem els feixos de llum i les figures en forma d\u2019estrella dels llums d\u2019un cotxe o d\u2019un fanal, o b\u00e9 en estar escoltant m\u00fasica en un concert; fins i tot en entrar les onades del mar (ones propagant-se per una superf\u00edcie material) en un port.<\/p>\n
La difracci\u00f3, a m\u00e9s, \u00e9s un fenomen de la naturalesa que, hist\u00f2ricament, ha contribu\u00eft i facilitat la descoberta d\u2019altres fen\u00f2mens, com ara la difracci\u00f3 d\u2019electrons (comparada amb la difracci\u00f3 de raigs X) sobre superf\u00edcies cristal\u00b7lines, que permet obtenir experimentalment i verificar la llei de Bragg i fa pal\u00e8s el car\u00e0cter dual de les part\u00edcules subat\u00f2miques i de la llum, o tamb\u00e9 pot ser el desenvolupament de t\u00e8cniques que van permetre a Francis Crick i James Watson descobrir l\u2019estructura de l\u2019ADN i verificar-ne la seva estructura en forma de doble d\u2019h\u00e8lix.<\/p>\n","protected":false},"excerpt":{"rendered":"En f\u00edsica, la difracci\u00f3 \u00e9s un fenomen f\u00edsic caracter\u00edstic de les ones en general i es fa present quan una ona es troba \n [...]<\/a>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_exactmetrics_skip_tracking":false,"footnotes":""},"categories":[9],"tags":[32],"class_list":["post-1683","post","type-post","status-publish","format-standard","hentry","category-edicio2014","tag-difraccio"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.ub.edu\/paraules-fisica\/wp-json\/wp\/v2\/posts\/1683","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ub.edu\/paraules-fisica\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ub.edu\/paraules-fisica\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ub.edu\/paraules-fisica\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ub.edu\/paraules-fisica\/wp-json\/wp\/v2\/comments?post=1683"}],"version-history":[{"count":0,"href":"https:\/\/www.ub.edu\/paraules-fisica\/wp-json\/wp\/v2\/posts\/1683\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ub.edu\/paraules-fisica\/wp-json\/wp\/v2\/media?parent=1683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ub.edu\/paraules-fisica\/wp-json\/wp\/v2\/categories?post=1683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ub.edu\/paraules-fisica\/wp-json\/wp\/v2\/tags?post=1683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}