{"id":18292,"date":"2018-09-18T16:00:46","date_gmt":"2018-09-18T20:00:46","guid":{"rendered":"https:\/\/sensing.konicaminolta.us\/blog\/por-que-as-veias-sao-azuis\/"},"modified":"2020-04-25T13:53:02","modified_gmt":"2020-04-25T17:53:02","slug":"por-que-as-veias-sao-azuis","status":"publish","type":"blog","link":"https:\/\/sensing.konicaminolta.us\/br\/blog\/por-que-as-veias-sao-azuis\/","title":{"rendered":"Por que as Veias s\u00e3o Azuis?"},"content":{"rendered":"<p>Alguma vez voc\u00ea j\u00e1 se perguntou por que suas veias parecem azuis mesmo que seu sangue seja vermelho? Um estudo recente revelou uma poss\u00edvel explica\u00e7\u00e3o para o fato das veias e alguns nervos, ou verrugas, parecerem azuis ao olho humano. Antes disso, a pesquisa sugeriu que era por causa do Efeito Tyndall. Este fen\u00f4meno \u00e9 quando a luz azul \u00e9 espalhada mais do que outras cores como o vermelho conforme elas passam atrav\u00e9s de fluidos e gases particulares. Isso resulta em conte\u00fado mais vis\u00edvel de azul. Esta hip\u00f3tese, no entanto, n\u00e3o foi confirmada e baseou-se na conjectura do que o efeito Tyndall faria no tecido humano.<\/p>\n<p>Ainda com d\u00favidas, conforme a dispers\u00e3o azul s\u00f3 acontece nas veias e nas verrugas e n\u00e3o em outras \u00e1reas da pele, os pesquisadores come\u00e7aram a aprender mais. Os autores do estudo, intitulado \u201cO Papel da Mistura de Cores Subtrativas na Percep\u00e7\u00e3o dos Nervos e Veias Azuis &#8211; al\u00e9m do efeito Tyndall\u201d, usaram um <a href=\"\/br\/products\/espectrofotometro-cm-26d\/\">Espectrofot\u00f4metro CM-26d<\/a> da Konica Minolta Sensing Americas para avaliar a reflet\u00e2ncia na pele em compara\u00e7\u00e3o com uma veia na mesma pessoa. Al\u00e9m disso, eles mediram a cor nas verrugas normais e de cor azul em cobaias.<\/p>\n<p>Os resultados sugeriram um efeito diferente, chamado de &#8216;mistura de cores subtrativas&#8217;, que \u00e9 semelhante \u00e0 remo\u00e7\u00e3o do amarelo do verde. Essencialmente, em vez de refletir mais a azul, significa menos reflet\u00e2ncia vermelha. Embora a diferen\u00e7a entre os dois possa parecer min\u00fascula, isso abre a porta \u00e0 possibilidade de v\u00e1rias explica\u00e7\u00f5es f\u00edsicas para poucas quantidades de comprimentos de onda vermelhos, al\u00e9m do efeito de Tyndall. Outras causas incluem os n\u00edveis de hemoglobina, diferen\u00e7as no sistema vascular e quantidades de melanina.<\/p>\n<p>A falta de vermelho faz com que o olho perceba certas partes do corpo como azul. Isto \u00e9 devido a um tipo de indu\u00e7\u00e3o crom\u00e1tica, chamado &#8216;contraste simult\u00e2neo,&#8217; que leva a um sentido mais agu\u00e7ado do contraste entre duas cores.<\/p>\n<p>Para qualquer dermatologista que queira estudar ou analisar a cor da pele, o <a href=\"\/br\/products\/espectrofotometro-cm-26d\/\">Espectrofot\u00f4metro CM-26d<\/a>\u00a0da Konica Minolta Sensing Americas \u00e9 um excelente recurso para medi\u00e7\u00f5es. Este dispositivo port\u00e1til e acess\u00edvel pode avaliar a cor, caracter\u00edsticas de UV e brilho relativo em amostras de todos os tamanhos, tornando-a ideal para fins de exames.<\/p>\n","protected":false},"featured_media":18293,"template":"","learning_center_categories":[1783],"class_list":["post-18292","blog","type-blog","status-publish","has-post-thumbnail","hentry","learning_center_categories-light-display-measurement-br"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.4 (Yoast SEO v24.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>Por que as Veias s\u00e3o Azuis? | Konica Minolta Sensing<\/title>\r\n<meta name=\"description\" content=\"Por que as Veias s\u00e3o Azuis?\" \/>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/sensing.konicaminolta.us\/br\/blog\/por-que-as-veias-sao-azuis\/\" \/>\r\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"Por que as Veias s\u00e3o Azuis? 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