{"id":4538,"date":"2025-12-18T11:37:03","date_gmt":"2025-12-18T10:37:03","guid":{"rendered":"https:\/\/agora.xtec.cat\/insjoncar\/?p=4538"},"modified":"2025-12-18T11:37:04","modified_gmt":"2025-12-18T10:37:04","slug":"cambra-fosca-comunicacio-audiovisual","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/insjoncar\/general\/cambra-fosca-comunicacio-audiovisual\/","title":{"rendered":"Cambra fosca – Comunicaci\u00f3 audiovisual"},"content":{"rendered":"\n

A l’optativa de comunicaci\u00f3 audiovisual hem fet una cambra fosca. \u00c9s una pr\u00e0ctica que Arist\u00f2til ja descrivia, consisteix en una habitaci\u00f3 amb un \u00fanic forat (estenop) per on entra la llum. Els raigs de llum formen una imatge dels objectes de l\u2019exterior. <\/p>\n\n\n\n

Vam fer diverses proves per poder contestar les seg\u00fcents preguntes. Tamb\u00e9 vam fer fotos per poder documentar el proc\u00e9s, finalment vam poder concloure que:<\/p>\n\n\n\n

    \n
  1. Si canvia la mida de l’estenop\u00a0<\/strong><\/li>\n<\/ol>\n\n\n\n

    Forat petit: la imatge surt m\u00e9s n\u00edtida per\u00f2 m\u00e9s fosca, perqu\u00e8 entra menys llum.\u00a0<\/p>\n\n\n\n

    Forat gran: la imatge \u00e9s m\u00e9s brillant per\u00f2 borrosa, ja que entren raigs de molts punts diferents.<\/p>\n\n\n\n

    \n
    \"\"<\/a><\/figure>\n<\/figure>\n\n\n\n
      \n
    1. Si apropem o allunyem una superf\u00edcie transl\u00facida\u00a0<\/strong><\/li>\n<\/ol>\n\n\n\n

      La superf\u00edcie transl\u00facida actua com a zoom, si allunyem la imatge es fa m\u00e9s gran, i si apropem es fa m\u00e9s petita.<\/p>\n\n\n\n

      \"\"<\/a><\/figure>\n\n\n\n
        \n
      1. Si movem la lent entre l\u2019entrada de llum i la imatge projectada\u00a0<\/strong><\/li>\n<\/ol>\n\n\n\n

        Quan afegim una lent davant de l’estenop, la lent permet enfocar millor la imatge. Si movem la lent:<\/p>\n\n\n\n

          \n
        • Quan l’apropem o allunyem, canvia el punt d\u2019enfocament.<\/li>\n\n\n\n
        • Si est\u00e0 massa a prop o massa lluny, la imatge es veu borrosa.<\/li>\n\n\n\n
        • Quan est\u00e0 en la dist\u00e0ncia adequada, la imatge es veu n\u00edtida i enfocada.<\/li>\n<\/ul>\n\n\n\n
            \n
          1. Si utilitzem un mirall, la imatge reflectida pot canviar de direcci\u00f3<\/strong><\/li>\n<\/ol>\n\n\n\n

            Per exemple:<\/p>\n\n\n\n

              \n
            • Si el posem en un angle de 45\u00b0, podem projectar la imatge cap amunt.<\/li>\n\n\n\n
            • Tamb\u00e9 podem corregir la inversi\u00f3 vertical o horitzontal de la imatge.
              <\/li>\n<\/ul>\n\n\n\n

              Ens ha agradat fer aquesta pr\u00e0ctica, ha sigut molt interessant observar els canvis de la llum i sempre \u00e9s divertit fer un experiment en lloc de teoria.<\/p>\n\n\n\n

              Escrit per: Ramon Mier, Quim Mbengue, Jan Comulada, Leo Garcia i Greta Rovelli.<\/p>\n\n\n\n

              <\/p>\n","protected":false},"excerpt":{"rendered":"

              A l’optativa de comunicaci\u00f3 audiovisual hem fet una cambra fosca. \u00c9s una pr\u00e0ctica que Arist\u00f2til ja descrivia, consisteix en una habitaci\u00f3 amb un \u00fanic forat (estenop) per on entra la llum. Els raigs de llum formen una imatge dels objectes de l\u2019exterior.  Vam fer diverses proves per poder contestar les seg\u00fcents preguntes. Tamb\u00e9 vam fer […]<\/p>\n","protected":false},"author":1,"featured_media":4539,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[8,1,29],"tags":[],"class_list":["post-4538","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-batxillerat","category-general","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/insjoncar\/wp-json\/wp\/v2\/posts\/4538","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/insjoncar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/insjoncar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/insjoncar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/insjoncar\/wp-json\/wp\/v2\/comments?post=4538"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/insjoncar\/wp-json\/wp\/v2\/posts\/4538\/revisions"}],"predecessor-version":[{"id":4544,"href":"https:\/\/agora.xtec.cat\/insjoncar\/wp-json\/wp\/v2\/posts\/4538\/revisions\/4544"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/insjoncar\/wp-json\/wp\/v2\/media\/4539"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/insjoncar\/wp-json\/wp\/v2\/media?parent=4538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/insjoncar\/wp-json\/wp\/v2\/categories?post=4538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/insjoncar\/wp-json\/wp\/v2\/tags?post=4538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}