{"id":1482,"date":"2025-12-01T08:39:03","date_gmt":"2025-12-01T08:39:03","guid":{"rendered":"https:\/\/www.victorfhess.org\/?p=1482"},"modified":"2026-04-11T12:06:37","modified_gmt":"2026-04-11T12:06:37","slug":"18-01-1930","status":"publish","type":"post","link":"https:\/\/www.victorfhess.org\/en\/18-01-1930\/","title":{"rendered":"18.01.1930"},"content":{"rendered":"<p class=\"has-background has-medium-font-size\" style=\"background-color:#a7c9bf2e\">back to <a href=\"https:\/\/www.victorfhess.org\/forschung\/transkriptionen\/\" data-type=\"page\" data-id=\"25\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-neve-link-hover-color-color\">Year<\/mark><\/a><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-border-color has-neve-link-hover-color-border-color\" style=\"border-width:1px\"><tbody><tr><td><strong>Title<\/strong><\/td><td><strong>Letter from Victor Franz Hess to Stefan Meyer<\/strong><\/td><\/tr><tr><td><strong>Original<\/strong><\/td><td>\u00a9 Fordham University, New York City, NY USA<\/td><\/tr><tr><td><strong>Editing<\/strong><\/td><td>\u00a9Victor-Franz-Hess-Gesellschaft P\u00f6llau<\/td><\/tr><tr><td><strong>Content<\/strong><\/td><td>Hess writes Meyer about his work on a constant called Eve\u2019s number, which is important for radiation measurements. For this work he needed radium samples from Meyer. He states that he could also send him emanation tubes as an alternative. He further describes the experiments about Eve\u2019s number he is planning. He then explains Meyer some recipe, that Meyer wanted to know. Further he writes that for Benndorfs birthday, nothing has been planned yet. He plans to talk to Kohlrausch about it and asks Meyer what ideas he has.<br>Lastly, he asks Meyer to tell Schweidler about his work with O\u2019Brolchain. He describes the methods he was using for measuring radioactive decay constants.<\/td><\/tr><tr><td><strong>Notes<\/strong><\/td><td>&#8211; Corker: means very good, excellent<br>&#8211; -Emanation: is a term used to describe the release of material in non-solid or liquid form from mostly solid source compounds, <a href=\"https:\/\/de.wikipedia.org\/wiki\/Emanation_(Physik)\">https:\/\/de.wikipedia.org\/wiki\/Emanation_(Physik)<\/a> (retrieved 20.10.2025)<br>&#8211; Eve\u2019sche Zahl: = Ionisation by the gamma rays of the Ra C quantity equivalent to 1 g of radium, calculated at a distance of 1 m from the point source of radiation. <a href=\"https:\/\/www.zobodat.at\/pdf\/SBAWW_138_2a_0169-0221.pdf\">https:\/\/www.zobodat.at\/pdf\/SBAWW_138_2a_0169-0221.pdf<\/a> (retrieved 21.10.2025)<br>&#8211; Ph. ZS.: Physikalische Zeitschrift, article published in: Victor. F. Hess and A. Reitz<em>, Zur Kapazit\u00e4tsbestimmung von Strahlungsapparaten<\/em>, Phys. ZS. 31, 284-288,1930.<br>&#8211; Verschwindungs-Konstante \u03b2: = diminution constant<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-neve-link-color-background-color has-background has-medium-font-size\">Original:<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Brief-VFH-an-Meyer-Orig.pdf\" type=\"application\/pdf\" style=\"width:100%;height:2000px\" aria-label=\"Embed of 1930-01-18 Brief VFH an Meyer - Orig.\"><\/object><a id=\"wp-block-file--media-d666812c-17ff-48d1-adb0-d933d5af1352\" href=\"https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Brief-VFH-an-Meyer-Orig.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">1930-01-18 Brief VFH an Meyer &#8211; Orig<\/a><a href=\"https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Brief-VFH-an-Meyer-Orig.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-d666812c-17ff-48d1-adb0-d933d5af1352\">Download<\/a><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-neve-link-color-background-color has-background has-medium-font-size\">Transcription:<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Brief-VFH-an-Meyer-Trans-.pdf\" type=\"application\/pdf\" style=\"width:100%;height:2000px\" aria-label=\"Embed of 1930-01-18 Brief VFH an Meyer - Trans.\"><\/object><a id=\"wp-block-file--media-81947dbf-709f-4ded-846c-485e0d0663a0\" href=\"https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Brief-VFH-an-Meyer-Trans-.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">1930-01-18 Brief VFH an Meyer &#8211; Trans<\/a><a href=\"https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Brief-VFH-an-Meyer-Trans-.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-81947dbf-709f-4ded-846c-485e0d0663a0\">Download<\/a><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>back to Year Title Letter from Victor Franz Hess to Stefan Meyer Original \u00a9 Fordham University, New York City, NY USA Editing \u00a9Victor-Franz-Hess-Gesellschaft P\u00f6llau Content Hess writes Meyer about his work on a constant called Eve\u2019s number, which is important for radiation measurements. For this work he needed radium samples from Meyer. He states that&hellip;&nbsp;<a href=\"https:\/\/www.victorfhess.org\/en\/18-01-1930\/\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">18.01.1930<\/span><\/a><\/p>","protected":false},"author":4,"featured_media":1485,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[27],"tags":[],"class_list":["post-1482","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-27"],"uagb_featured_image_src":{"full":["https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Vorschaubild.png",580,464,false],"thumbnail":["https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Vorschaubild-150x150.png",150,150,true],"medium":["https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Vorschaubild-300x240.png",300,240,true],"medium_large":["https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Vorschaubild.png",580,464,false],"large":["https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Vorschaubild.png",580,464,false],"1536x1536":["https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Vorschaubild.png",580,464,false],"2048x2048":["https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Vorschaubild.png",580,464,false],"trp-custom-language-flag":["https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Vorschaubild-15x12.png",15,12,true],"neve-blog":["https:\/\/www.victorfhess.org\/wp-content\/uploads\/2025\/12\/1930-01-18-Vorschaubild.png",580,464,false]},"uagb_author_info":{"display_name":"Sonja Draxler","author_link":"https:\/\/www.victorfhess.org\/en\/author\/sonja-draxler\/"},"uagb_comment_info":0,"uagb_excerpt":"back to Year Title Letter from Victor Franz Hess to Stefan Meyer Original \u00a9 Fordham University, New York City, NY USA Editing \u00a9Victor-Franz-Hess-Gesellschaft P\u00f6llau Content Hess writes Meyer about his work on a constant called Eve\u2019s number, which is important for radiation measurements. For this work he needed radium samples from Meyer. He states that&hellip;&nbsp;Read&hellip;","_links":{"self":[{"href":"https:\/\/www.victorfhess.org\/en\/wp-json\/wp\/v2\/posts\/1482","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.victorfhess.org\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.victorfhess.org\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.victorfhess.org\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.victorfhess.org\/en\/wp-json\/wp\/v2\/comments?post=1482"}],"version-history":[{"count":1,"href":"https:\/\/www.victorfhess.org\/en\/wp-json\/wp\/v2\/posts\/1482\/revisions"}],"predecessor-version":[{"id":1486,"href":"https:\/\/www.victorfhess.org\/en\/wp-json\/wp\/v2\/posts\/1482\/revisions\/1486"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.victorfhess.org\/en\/wp-json\/wp\/v2\/media\/1485"}],"wp:attachment":[{"href":"https:\/\/www.victorfhess.org\/en\/wp-json\/wp\/v2\/media?parent=1482"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.victorfhess.org\/en\/wp-json\/wp\/v2\/categories?post=1482"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.victorfhess.org\/en\/wp-json\/wp\/v2\/tags?post=1482"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}