{"id":7259,"date":"2020-08-23T16:17:34","date_gmt":"2020-08-23T14:17:34","guid":{"rendered":"https:\/\/outreach-wp.ixole.es\/project\/la-camera-schlieren\/"},"modified":"2020-08-23T16:37:26","modified_gmt":"2020-08-23T14:37:26","slug":"la-camera-schlieren","status":"publish","type":"project","link":"https:\/\/outreach-wp.ixole.es\/ca\/project\/la-camera-schlieren\/","title":{"rendered":"La c\u00e0mera Schlieren"},"content":{"rendered":"

[et_pb_section fb_built=”1″ admin_label=”section” _builder_version=”4.5.1″ background_color=”#e1e1e1″ custom_padding=”0px||0px|” transparent_background=”off” make_fullwidth=”off” use_custom_width=”off” width_unit=”on”][et_pb_row column_structure=”1_3,1_3,1_3″ use_custom_gutter=”on” gutter_width=”1″ make_equal=”on” admin_label=”row” module_class=” et_pb_row_fullwidth” _builder_version=”4.5.1″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” width=”100%” width_tablet=”100%” width_phone=”” width_last_edited=”on|desktop” max_width=”100%” max_width_tablet=”100%” max_width_phone=”” max_width_last_edited=”on|desktop” custom_padding=”0px||0px|” make_fullwidth=”on” use_custom_width=”off” width_unit=”on”][et_pb_column type=”1_3″ _builder_version=”4.5.1″ background_color=”#3b4249″ custom_padding=”45px|45px|22.5px|45px|false|false” custom_padding__hover=”|||”][et_pb_post_title meta=”off” featured_image=”off” _builder_version=”4.5.6″ _module_preset=”default” title_text_color=”#d7ac2f”][\/et_pb_post_title][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”4.5.1″ background_color=”#d1d1cb” custom_padding=”45px|45px|22.5px|45px|false|false” custom_padding__hover=”|||”][et_pb_text admin_label=”Texto” _builder_version=”4.5.7″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” use_border_color=”off” border_color=”#ffffff” border_style=”solid”]<\/p>\n

Carles Ib\u00e1\u00f1ez Trull\u00e9n
<\/span><\/h3>\n

institut ic\u00e0ria – barcelona <\/span><\/h4>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”4.5.1″ background_color=”#d1d1cb” custom_padding=”45px|45px|22.5px|45px|false|false” custom_padding__hover=”|||”][et_pb_text admin_label=”Texto” _builder_version=”4.5.7″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” use_border_color=”off” border_color=”#ffffff” border_style=”solid”]El treball explora les possibilitats d’aconseguir la invisibilitat creant una capa d’invisibilitat mitjan\u00e7ant un sistema de lents. L’experiment ha estat realitzat primerament per investigadors de la Universitat de Rochester
\ni vam reproduir-ho a les instal\u2219lacions de l’ICFO. La clau de l’experiment ha estat aconseguir que el feix de llum es faci estret en una regi\u00f3 de l’espai. En aquest espai hi ha tota una regi\u00f3 que resulta en una regi\u00f3 cega per al observador.<\/p>\n

Quan em van oferir la possibilitat de fer el meu Treball de Recerca al ICFO, al principi no sabia quin tema escollir, aleshores la Marta Garc\u00eda em va parlar de la c\u00e0mera Schlieren, i em va semblar un tema molt interessant. Aquesta c\u00e0mera permet veure les coses des d\u2019un altre punt de vista: observant les conveccions d\u2019aire produ\u00efdes pel mateix objecte o b\u00e9 les que hi passen a prop.<\/p>\n

Existeixen dues maneres de muntar el sistema Schlieren. El primer consisteix en utilitzar dos miralls c\u00f2ncaus, iguals, per crear un feix de raigs paral\u00b7lels. Per fer aquest m\u00e8tode, cal una font de llum, una lent per concentrar-la i posar el primer mirall a la dist\u00e0ncia focal del mateix comptant des del punt on es concentra la llum; i el segon mirall es posa paral\u00b7lel al primer per captar el feix de raigs paral\u00b7lels, i tornar-lo a concentrar all\u00e0 on posarem la c\u00e0mera. El segon m\u00e8tode, que \u00e9s el que he utilitzat, en canvi, consta nom\u00e9s d\u2019un sol mirall c\u00f2ncau. La font de llum es col\u00b7loca al doble de la dist\u00e0ncia focal del mirall, juntament amb la c\u00e0mera digital.
\nVaig comen\u00e7ar a desenvolupar el meu treball a l\u2019ICFO al maig. Aleshores primer de tot, vaig aprendre a alinear el mirall d\u201911 cm de di\u00e0metre que ten\u00edem amb la llum. M\u00e9s tard, a l\u2019estiu vam fer un muntatge on ja hi vam posar tots els elements, el que ens va permetre obtenir les primeres imatges d\u2019unes solucions de sal i sucre en aigua. Durant l\u2019estiu ja ten\u00edem el mirall amb el qual an\u00e0vem a fer el muntatge final, per\u00f2 ens faltava un suport adequat, ja que s\u2019ha de subjectar el mirall perfectament per tal que no es mogui gens. Va ser a inicis de setembre quan ja vam poder fer el muntatge amb el mirall gran. Aleshores vam muntar-la i vam poder observar fen\u00f2mens que l\u2019altre mirall no ens havia perm\u00e8s veure com la calor emesa per la nostra m\u00e0.
\nVam fer diverses observacions entre les quals hi havia, el vapor de l\u2019alcohol caient d\u2019una ampolla, la calor produ\u00efda per un encenedor al fer la combusti\u00f3 del gas, o b\u00e9 com es dissolien uns granets de sucre amb aigua.<\/span><\/p>\n

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Carles Ib\u00e1\u00f1ez Trull\u00e9n institut ic\u00e0ria – barcelona El treball explora les possibilitats d’aconseguir la invisibilitat creant una capa d’invisibilitat mitjan\u00e7ant un sistema de lents. L’experiment ha estat realitzat primerament per investigadors de la Universitat de Rochester i vam reproduir-ho a les instal\u2219lacions de l’ICFO. La clau de l’experiment ha estat aconseguir que el feix de […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":""},"project_category":[215,293,252,297],"project_tag":[],"acf":[],"yoast_head":"\nLa c\u00e0mera Schlieren - Outreach<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/outreach-wp.ixole.es\/ca\/project\/la-camera-schlieren\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La c\u00e0mera Schlieren - Outreach\" \/>\n<meta property=\"og:description\" content=\"Carles Ib\u00e1\u00f1ez Trull\u00e9n institut ic\u00e0ria - barcelona El treball explora les possibilitats d'aconseguir la invisibilitat creant una capa d'invisibilitat mitjan\u00e7ant un sistema de lents. L'experiment ha estat realitzat primerament per investigadors de la Universitat de Rochester i vam reproduir-ho a les instal\u2219lacions de l'ICFO. La clau de l'experiment ha estat aconseguir que el feix de […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/outreach-wp.ixole.es\/ca\/project\/la-camera-schlieren\/\" \/>\n<meta property=\"og:site_name\" content=\"Outreach\" \/>\n<meta property=\"article:modified_time\" content=\"2020-08-23T14:37:26+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/outreach-wp.ixole.es\/ca\/project\/la-camera-schlieren\/\",\"url\":\"https:\/\/outreach-wp.ixole.es\/ca\/project\/la-camera-schlieren\/\",\"name\":\"La c\u00e0mera Schlieren - Outreach\",\"isPartOf\":{\"@id\":\"https:\/\/outreach-wp.ixole.es\/#website\"},\"datePublished\":\"2020-08-23T14:17:34+00:00\",\"dateModified\":\"2020-08-23T14:37:26+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/outreach-wp.ixole.es\/ca\/project\/la-camera-schlieren\/#breadcrumb\"},\"inLanguage\":\"ca-ES\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/outreach-wp.ixole.es\/ca\/project\/la-camera-schlieren\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/outreach-wp.ixole.es\/ca\/project\/la-camera-schlieren\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Portada\",\"item\":\"https:\/\/outreach-wp.ixole.es\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Projects\",\"item\":\"https:\/\/outreach-wp.ixole.es\/ca\/project\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"La c\u00e0mera Schlieren\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/outreach-wp.ixole.es\/#website\",\"url\":\"https:\/\/outreach-wp.ixole.es\/\",\"name\":\"Outreach\",\"description\":\"ICFO's Outreach\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/outreach-wp.ixole.es\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"ca-ES\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"La c\u00e0mera Schlieren - Outreach","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/outreach-wp.ixole.es\/ca\/project\/la-camera-schlieren\/","og_locale":"ca_ES","og_type":"article","og_title":"La c\u00e0mera Schlieren - Outreach","og_description":"Carles Ib\u00e1\u00f1ez Trull\u00e9n institut ic\u00e0ria - barcelona El treball explora les possibilitats d'aconseguir la invisibilitat creant una capa d'invisibilitat mitjan\u00e7ant un sistema de lents. 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