{"id":10446,"date":"2020-01-20T09:38:00","date_gmt":"2020-01-20T08:38:00","guid":{"rendered":"https:\/\/eoc.cat\/luminotecnia-principios-basicos\/"},"modified":"2022-02-17T10:47:39","modified_gmt":"2022-02-17T09:47:39","slug":"luminotecnia-principis-basics","status":"publish","type":"post","link":"https:\/\/eoc.cat\/ca\/luminotecnia-principis-basics\/","title":{"rendered":"La luminot\u00e8cnia i els seus principis b\u00e0sics"},"content":{"rendered":"<p>La <strong>luminot\u00e8cnia<\/strong> \u00e9s la <strong>ci\u00e8ncia que estudia les diferents formes de producci\u00f3 de llum<\/strong>. Dins de l&#8217;acte de donar llum trobes dues fonts fonamentals. D&#8217;una banda, est\u00e0 el portador de llum i, d&#8217;altra banda, est\u00e0 l&#8217;objecte il\u00b7luminat.<\/p>\n<p>La llum \u00e9s un principi fonamental que forma a part del teu dia a dia. Sense ella, b\u00e0sicament no podr\u00edem viure. Ja en la prehist\u00f2ria es va descobrir el foc i l&#8217;utilitzem per a alimentar-nos, escalfar-nos, aix\u00ed com per a il\u00b7luminar de nit. Posteriorment, es van crear les espelmes, instruments de cera que podien il\u00b7luminar amb l&#8217;ajuda del foc.<\/p>\n<p>Amb el pas del temps, l&#8217;\u00e9sser hum\u00e0 va evolucionar i va arribar a fabricar un instrument de cer\u00e0mica o metall. Aquest instrument va rebre el nom de llum.<\/p>\n<h2>Com podem quantificar les magnituds de la luminot\u00e8cnia?<\/h2>\n<p>Per a quantificar les magnituds de la luminot\u00e8cnia hem de parar esment a aquests punts:<\/p>\n<p>D&#8217;una banda, tenim el <strong>flux llumin\u00f3s<\/strong>. Aquest se centra en mesurar la pot\u00e8ncia de l&#8217;energia que circula fins a arribar a tu en forma de llum. La unitat de mesura que empres per a mesurar el flux llumin\u00f3s \u00e9s el <strong>lumen<\/strong>.<\/p>\n<p>Pots trobar objectes que estan composts d&#8217;un flux llumin\u00f3s en el teu dia a dia. Un exemple s\u00f3n els llums de tota mena, com les hal\u00f2genes, de mercuri o fluorescents.<\/p>\n<p>D&#8217;altra banda, quan la llum emesa per un objecte es projecta en una determinada zona, parlem de <strong>intensitat lluminosa<\/strong>. Aqu\u00ed, es mesura tota la intensitat que es reuneix en l&#8217;\u00e0rea il\u00b7luminada. La unitat de mesura que utilitzes per a quantificar i mesurar la intensitat lluminosa \u00e9s la <strong>candela<\/strong>.<\/p>\n<p>En tercer lloc, tens la <strong>lumin\u00e0ncia<\/strong>. Aquesta correspon a la densitat que ocupa en un lloc la llum emesa per un determinat aparell. Per a mesurar i quantificar la densitat de la lumin\u00e0ncia has de tenir en compte tots els tipus de superf\u00edcie existents. Tant els reals com els espacials. Pots mesurar i quantificar la lumin\u00e0ncia mitjan\u00e7ant la unitat de mesura anomenada <strong>lux<\/strong>.<\/p>\n<p>L&#8217;\u00faltima branca que quantifica aquest proc\u00e9s de llum es diu lumin\u00e0ncia. Est\u00e0 relacionada directament amb la lumin\u00e0ncia. En aquest \u00e0mbit es descriu com \u00e9s la llum que s&#8217;ha projectat sobre un objecte o una superf\u00edcie. Es veu com influeix en ell.<\/p>\n<p>Si vols <a href=\"https:\/\/eoc.cat\/ca\/curs-delectricitat-general\/\">dedicar-te al sector de l&#8217;electricitat<\/a> haur\u00e0s d&#8217;adquirir tots aquests coneixements per a poder aplicar-los en la teva \u00e0rea professional.<\/p>\n<h2>Quins s\u00f3n els elements b\u00e0sics d&#8217;il\u00b7luminaci\u00f3 en una instal\u00b7laci\u00f3 el\u00e8ctrica?<\/h2>\n<p>A l&#8217;hora de fer una instal\u00b7laci\u00f3 el\u00e8ctrica haur\u00e0s de tenir en compte una s\u00e8rie de factors importants. A m\u00e9s de preservar la seguretat de tots els que ens envolten. Aquests factors s\u00f3n la zona geogr\u00e0fica i els aspectes caracter\u00edstics d&#8217;aquells instruments que utilitzem en el nostre ofici.<\/p>\n<p>Els elements b\u00e0sics d&#8217;il\u00b7luminaci\u00f3 en una instal\u00b7laci\u00f3 el\u00e8ctrica poden ser, per exemple els llums led. S\u00f3n conegudes mundialment pel seu baix consum d&#8217;energia i per ser les m\u00e9s duradores. Es tracta d&#8217;un dels elements m\u00e9s rendibles en una instal\u00b7laci\u00f3 el\u00e8ctrica.<\/p>\n<p>Per\u00f2 a m\u00e9s dels llums led, podem trobar les tradicionals bombetes o les de baix consum. Des de l&#8217;1 de setembre de l&#8217;any 212, la Uni\u00f3 Europea va prohibir la fabricaci\u00f3 de bombetes incandescents. \u00c9s possible que encara trobis alguna en botigues perqu\u00e8 est\u00e0 permesa la seva venda fins que s&#8217;acabin les exist\u00e8ncies. Per\u00f2 segur que a hores d&#8217;ara quedaran poques.<\/p>\n<p>Dins dels llums que m\u00e9s energia consumeixen trobem els hal\u00f2gens, vapor de sodi a alta i baixa pressi\u00f3, etc. S\u00f3n tipus de llums que s&#8217;utilitzen en enllumenat p\u00fablic o grans espais.<\/p>\n<h2>Definici\u00f3 de conceptes &#8220;il\u00b7luminar&#8221; i &#8220;Enllumenar&#8221;<\/h2>\n<ul>\n<li><strong>Il\u00b7luminar<\/strong> \u00e9s adornar amb un cert nombre de llums un espai o fins i tot objectes.<\/li>\n<li><strong>Enllumenar<\/strong> \u00e9s donar llum i claredat amb algun cos que tingui aquesta propietat.<\/li>\n<\/ul>\n<p>No \u00e9s el mateix il\u00b7luminar que il\u00b7luminar. Aquesta m\u00e0xima es refereix a la import\u00e0ncia de la <strong>llum esc\u00e8nica<\/strong>, d&#8217;exposicions d&#8217;obres, botigues de roba, etc. Implica una complexitat molt major que la d&#8217;encendre una bombeta amb un interruptor.<\/p>\n<p>Il\u00b7luminar un espectacle, una exposici\u00f3 o una botiga, no \u00e9s penjar uns quants focus perqu\u00e8 es vegi l&#8217;espai. S&#8217;ent\u00e9n llavors que il\u00b7luminar \u00e9s omplir de llum un espai per a facilitar la visibilitat i il\u00b7luminar \u00e9s fer el mateix per\u00f2 delimitant l&#8217;espai i dotant la seva atmosfera de significat.<\/p>\n<h2>El professional de l&#8217;electricitat<\/h2>\n<p>El nostre ofici \u00e9s un dels m\u00e9s importants. Ens encarreguem de proporcionar, cuidar i mantenir la llum que il\u00b7lumina el m\u00f3n. Nosaltres instal\u00b7lem i mantenim els serveis el\u00e8ctrics de cases, comunitats, negocis o de la via p\u00fablica.<\/p>\n<p>Per aquest motiu, a m\u00e9s de saber manejar les diferents eines del nostre ofici i saber com desenvolupar la nostra professi\u00f3 t\u00e8cnicament, tamb\u00e9 hem de con\u00e8ixer els conceptes associats a la llum.<\/p>\n<p>Con\u00e8ixer la llum, els diferents productes del mercat i conceptes com el de la luminot\u00e8cnia ens ajudar\u00e0 a il\u00b7luminar millor els espais. Al cap i a la fi, el nostre ofici requereix de gran passi\u00f3 en el que es fa.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La luminot\u00e8cnia \u00e9s la ci\u00e8ncia que estudia les diferents formes de producci\u00f3 de llum. Dins de l&#8217;acte de donar llum trobes dues fonts fonamentals. D&#8217;una banda, est\u00e0 el portador de llum i, d&#8217;altra banda, est\u00e0 l&#8217;objecte il\u00b7luminat. La llum \u00e9s un principi fonamental que forma a part del teu dia a dia. Sense ella, b\u00e0sicament [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":6706,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[81],"tags":[82],"class_list":["post-10446","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electricitat-general","tag-electricitat-general"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La luminot\u00e8cnia i els seus principis b\u00e0sics | EOC Barcelona<\/title>\n<meta name=\"description\" content=\"T&#039;expliquem qu\u00e8 \u00e9s la luminot\u00e8cnia i descrivim els principals conceptes que la defineixen. 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