{"id":21120,"date":"2020-01-31T09:04:44","date_gmt":"2020-01-31T08:04:44","guid":{"rendered":"https:\/\/rinconeducativo.org\/efemerides\/31-de-enero-lise-meitner-y-otto-hahn-descubren-un-elemento-radiactivo-denominado\/"},"modified":"2026-01-21T10:37:18","modified_gmt":"2026-01-21T09:37:18","slug":"january-31-1917-lise-meitner-otto-hahn-discover-protactinium","status":"publish","type":"re_efemeride","link":"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/","title":{"rendered":"January 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium"},"content":{"rendered":"
\n
\"\"<\/figure>\n<\/div>\n\n\n

Otto Hahn<\/a>\u00a0and Lise Meitner<\/a><\/span> discovered a radioactive element called protactinium.<\/p>\n\n\n\n

Lise Meitner was an Austrian physicist who researched radioactivity and nuclear physics. Meitner was an important part of the team that discovered nuclear fission, an achievement for which her colleague Otto Hahn received the Nobel Prize.<\/p>\n\n\n\n

She is often considered one of the most blatant examples of scientific breakthroughs made by women and overlooked by the Nobel committee. A study published in 1997 in the journal Physics Today concluded that Meitner's omission was \"a rare example in which negative personal opinions led to the exclusion of a deserving scientist\".<\/p>\n\n\n\n

Element 109, meitnerium, was named in his honor.<\/p>\n","protected":false},"excerpt":{"rendered":"

January 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium<\/p>\n","protected":false},"author":1088,"featured_media":40778,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[7560,8230,7792,7715,7146],"mes":[7211],"clasificacion_anterior":[7255],"class_list":["post-21120","re_efemeride","type-re_efemeride","status-publish","has-post-thumbnail","hentry","tag-atomo-en","tag-nuclear-energy","tag-nuclear-fission-en","tag-periodic-table-en","tag-radiation-en","mes-january"],"acf":{"fecha":"19170131"},"yoast_head":"\nJanuary 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium - Rinc\u00f3n educativo<\/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:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"January 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium - Rinc\u00f3n educativo\" \/>\n<meta property=\"og:description\" content=\"January 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium\" \/>\n<meta property=\"og:url\" content=\"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/\" \/>\n<meta property=\"og:site_name\" content=\"Rinc\u00f3n educativo\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-21T09:37:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/rinconeducativo.org\/wp-content\/uploads\/2020\/01\/Hahn_Otto_Meitner_Lise.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1100\" \/>\n\t<meta property=\"og:image:height\" content=\"619\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/\",\"url\":\"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/\",\"name\":\"January 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium - Rinc\u00f3n educativo\",\"isPartOf\":{\"@id\":\"https:\/\/rinconeducativo.org\/es\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/rinconeducativo.org\/wp-content\/uploads\/2020\/01\/Hahn_Otto_Meitner_Lise.jpg\",\"datePublished\":\"2020-01-31T08:04:44+00:00\",\"dateModified\":\"2026-01-21T09:37:18+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/#primaryimage\",\"url\":\"https:\/\/rinconeducativo.org\/wp-content\/uploads\/2020\/01\/Hahn_Otto_Meitner_Lise.jpg\",\"contentUrl\":\"https:\/\/rinconeducativo.org\/wp-content\/uploads\/2020\/01\/Hahn_Otto_Meitner_Lise.jpg\",\"width\":1100,\"height\":619},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Portada\",\"item\":\"https:\/\/rinconeducativo.org\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Efem\u00e9rides\",\"item\":\"https:\/\/rinconeducativo.org\/es\/efemerides\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"January 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/rinconeducativo.org\/es\/#website\",\"url\":\"https:\/\/rinconeducativo.org\/es\/\",\"name\":\"Rinc\u00f3n educativo\",\"description\":\"Un proyecto del Foro Nuclear\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/rinconeducativo.org\/es\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"January 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium - Rinc\u00f3n educativo","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:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/","og_locale":"en_US","og_type":"article","og_title":"January 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium - Rinc\u00f3n educativo","og_description":"January 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium","og_url":"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/","og_site_name":"Rinc\u00f3n educativo","article_modified_time":"2026-01-21T09:37:18+00:00","og_image":[{"width":1100,"height":619,"url":"https:\/\/rinconeducativo.org\/wp-content\/uploads\/2020\/01\/Hahn_Otto_Meitner_Lise.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/","url":"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/","name":"January 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium - Rinc\u00f3n educativo","isPartOf":{"@id":"https:\/\/rinconeducativo.org\/es\/#website"},"primaryImageOfPage":{"@id":"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/#primaryimage"},"image":{"@id":"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/#primaryimage"},"thumbnailUrl":"https:\/\/rinconeducativo.org\/wp-content\/uploads\/2020\/01\/Hahn_Otto_Meitner_Lise.jpg","datePublished":"2020-01-31T08:04:44+00:00","dateModified":"2026-01-21T09:37:18+00:00","breadcrumb":{"@id":"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/#primaryimage","url":"https:\/\/rinconeducativo.org\/wp-content\/uploads\/2020\/01\/Hahn_Otto_Meitner_Lise.jpg","contentUrl":"https:\/\/rinconeducativo.org\/wp-content\/uploads\/2020\/01\/Hahn_Otto_Meitner_Lise.jpg","width":1100,"height":619},{"@type":"BreadcrumbList","@id":"https:\/\/rinconeducativo.org\/en\/anniversaries\/january-31-1917-lise-meitner-otto-hahn-discover-protactinium\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Portada","item":"https:\/\/rinconeducativo.org\/en\/"},{"@type":"ListItem","position":2,"name":"Efem\u00e9rides","item":"https:\/\/rinconeducativo.org\/es\/efemerides\/"},{"@type":"ListItem","position":3,"name":"January 31, 1917 - Lise Meitner and Otto Hahn discover a radioactive element called protactinium"}]},{"@type":"WebSite","@id":"https:\/\/rinconeducativo.org\/es\/#website","url":"https:\/\/rinconeducativo.org\/es\/","name":"Rinc\u00f3n educativo","description":"Un proyecto del Foro Nuclear","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/rinconeducativo.org\/es\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/rinconeducativo.org\/en\/wp-json\/wp\/v2\/re_efemeride\/21120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rinconeducativo.org\/en\/wp-json\/wp\/v2\/re_efemeride"}],"about":[{"href":"https:\/\/rinconeducativo.org\/en\/wp-json\/wp\/v2\/types\/re_efemeride"}],"author":[{"embeddable":true,"href":"https:\/\/rinconeducativo.org\/en\/wp-json\/wp\/v2\/users\/1088"}],"version-history":[{"count":5,"href":"https:\/\/rinconeducativo.org\/en\/wp-json\/wp\/v2\/re_efemeride\/21120\/revisions"}],"predecessor-version":[{"id":40781,"href":"https:\/\/rinconeducativo.org\/en\/wp-json\/wp\/v2\/re_efemeride\/21120\/revisions\/40781"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rinconeducativo.org\/en\/wp-json\/wp\/v2\/media\/40778"}],"wp:attachment":[{"href":"https:\/\/rinconeducativo.org\/en\/wp-json\/wp\/v2\/media?parent=21120"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rinconeducativo.org\/en\/wp-json\/wp\/v2\/tags?post=21120"},{"taxonomy":"mes","embeddable":true,"href":"https:\/\/rinconeducativo.org\/en\/wp-json\/wp\/v2\/mes?post=21120"},{"taxonomy":"clasificacion_anterior","embeddable":true,"href":"https:\/\/rinconeducativo.org\/en\/wp-json\/wp\/v2\/clasificacion_anterior?post=21120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}