{"id":1749,"date":"2023-09-19T19:31:05","date_gmt":"2023-09-19T19:31:05","guid":{"rendered":"https:\/\/www.laspa.slg.br\/?page_id=1749"},"modified":"2023-09-19T19:31:05","modified_gmt":"2023-09-19T19:31:05","slug":"cromio-manganes-niquel-selenio-cerio-vanadio-tantalo-tungstenio-iridio-platina-e-torio-em-mumford-1934","status":"publish","type":"page","link":"https:\/\/www.laspa.slg.br\/en\/projetos\/a-agencia-social-dos-elementos-quimicos\/levantamentos-da-presenca-de-elementos-quimicos-em-livros\/cromio-manganes-niquel-selenio-cerio-vanadio-tantalo-tungstenio-iridio-platina-e-torio-em-mumford-1934\/","title":{"rendered":"Cr\u00f4mio, mangan\u00eas, n\u00edquel, sel\u00eanio, c\u00e9rio, van\u00e1dio, t\u00e2ntalo, tungst\u00eanio, ir\u00eddio, platina e t\u00f3rio em Mumford (1934)"},"content":{"rendered":"<p>The use of the rare metals and the metallic earths is another characteristic advance of this phase: <strong>tantalum<\/strong>, <strong>tungsten<\/strong>, <strong>thorium<\/strong>, and <strong>cerium<\/strong> in lamps, <strong>iridium<\/strong> and <strong>platinum<\/strong> in mechanical contact points -the tips of fountain pens or the attachments in removable dentures-and of <strong>nickel<\/strong>, <strong>vanadium<\/strong>, <strong>tungsten<\/strong>, <strong>manganese<\/strong> and <strong>chromium<\/strong> in steel. <strong>Selenium<\/strong>, whose electrical resistance varies inversely with the intensity of light, was another metal which sprang into wide use with electricity: automatic counting devices and electric door-openers are both possible by reason of this physical property. (Mumford 1934:231)<\/p>\n<p>MUMFORD, Lewis. 1934. <em>Technique and civilization<\/em>. New York: Harcourt, Brace and Company.<\/p>","protected":false},"excerpt":{"rendered":"<p>The use of the rare metals and the metallic earths is another characteristic advance of this phase: tantalum, tungsten, thorium, and cerium in lamps, iridium and platinum in mechanical contact points -the tips of fountain pens or the attachments in removable dentures-and of nickel, vanadium, tungsten, manganese and chromium in steel. Selenium, whose electrical resistance varies inversely with the intensity [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":1212,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1749","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/pages\/1749","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/comments?post=1749"}],"version-history":[{"count":1,"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/pages\/1749\/revisions"}],"predecessor-version":[{"id":1750,"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/pages\/1749\/revisions\/1750"}],"up":[{"embeddable":true,"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/pages\/1212"}],"wp:attachment":[{"href":"https:\/\/www.laspa.slg.br\/en\/wp-json\/wp\/v2\/media?parent=1749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}