{"id":19507,"date":"2024-12-12T13:39:22","date_gmt":"2024-12-12T16:39:22","guid":{"rendered":"https:\/\/hangarmma.com.br\/blog\/?post_type=glossary&#038;p=19507"},"modified":"2024-12-12T13:39:31","modified_gmt":"2024-12-12T16:39:31","slug":"termionico","status":"publish","type":"glossary","link":"https:\/\/hangarmma.com.br\/blog\/termionico\/","title":{"rendered":"Termi\u00f4nico"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Emiss\u00e3o Termi\u00f4nica<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A emiss\u00e3o termi\u00f4nica \u00e9 um fen\u00f4meno f\u00edsico no qual el\u00e9trons s\u00e3o liberados da superf\u00edcie de um material em resposta ao aumento de sua temperatura. Este processo ocorre devido \u00e0 energia t\u00e9rmica fornecida, que \u00e9 suficiente para superar a barreira potencial que mant\u00e9m os el\u00e9trons ligados ao material.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nos metais, os el\u00e9trons de val\u00eancia s\u00e3o respons\u00e1veis por conduzir corrente el\u00e9trica e est\u00e3o relativamente livres para se mover dentro do material. No entanto, para deixar a superf\u00edcie do metal, eles precisam adquirir energia suficiente para vencer a &#8220;fun\u00e7\u00e3o trabalho&#8221;, que \u00e9 a quantidade m\u00ednima de energia necess\u00e1ria para um el\u00e9tron escapar da superf\u00edcie de um metal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quando o material \u00e9 aquecido, a vibra\u00e7\u00e3o dos \u00e1tomos aumenta, transferindo energia t\u00e9rmica para os el\u00e9trons. A partir de uma determinada temperatura, alguns el\u00e9trons adquirem energia suficiente para escapar, originando a emiss\u00e3o termi\u00f4nica. Este fen\u00f4meno \u00e9 explorado em dispositivos como v\u00e1lvulas termi\u00f4nicas e tubos de raios cat\u00f3dicos, onde a emiss\u00e3o de el\u00e9trons \u00e9 fundamental para seu funcionamento.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O conceito da emiss\u00e3o termi\u00f4nica \u00e9 essencial em eletr\u00f4nica e f\u00edsica aplicada, particularmente em contextos onde o controle preciso do fluxo de el\u00e9trons \u00e9 necess\u00e1rio para gerar ou amplificar sinais el\u00e9tricos.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Emiss\u00e3o Termi\u00f4nica A emiss\u00e3o termi\u00f4nica \u00e9 um fen\u00f4meno f\u00edsico no qual el\u00e9trons s\u00e3o liberados da superf\u00edcie de um material em resposta ao aumento de sua temperatura. Este processo ocorre devido \u00e0 energia t\u00e9rmica fornecida, que \u00e9 suficiente para superar a barreira potencial que mant\u00e9m os el\u00e9trons ligados ao material. Nos metais, os el\u00e9trons de val\u00eancia [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"template":"","class_list":["post-19507","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Termi\u00f4nico - HANGAR MMA<\/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:\/\/hangarmma.com.br\/blog\/termionico\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Termi\u00f4nico - HANGAR MMA\" \/>\n<meta property=\"og:description\" content=\"Emiss\u00e3o Termi\u00f4nica A emiss\u00e3o termi\u00f4nica \u00e9 um fen\u00f4meno f\u00edsico no qual el\u00e9trons s\u00e3o liberados da superf\u00edcie de um material em resposta ao aumento de sua temperatura. 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