{"id":7880,"date":"2011-02-04T03:00:44","date_gmt":"2011-02-04T08:00:44","guid":{"rendered":"http:\/\/blogs.scienceforums.net\/swansont\/?p=7880"},"modified":"2011-02-04T03:00:44","modified_gmt":"2011-02-04T08:00:44","slug":"he-aint-heavy-2","status":"publish","type":"post","link":"http:\/\/blogs.scienceforums.net\/swansont\/archives\/7880","title":{"rendered":"He Ain&#039;t Heavy"},"content":{"rendered":"<p><a href=\"http:\/\/scienceblogs.com\/principles\/2011\/02\/heavy_heavy_water.php\">Uncertain Principles:  Heavy Heavy Water<\/a><\/p>\n<blockquote><p>So is it plausible that barrels of heavy water might&#8217;ve sunk, while barrels that contained ordinary water floated?<\/p><\/blockquote>\n<p>One thing not considered, or another way of looking at the problem:  given the conditions of February in Norway, what if the heavy water had <em>already<\/em> frozen inside the full barrel.  Would heavy ice float?  It has a density of 1.0177 g\/cm^3 (vs 0.917 for regular frozen water) and freezes\/melts at 3.82 \u00b0C.  Water has a maximum density of 1.0 g\/cm^3.  Even not inside of a metal barrel it would definitely sink, if it were 100% D2O.    If the barrel were 10 kg, then we could suffer 50g\/L of &#8220;missing&#8221; deuterium, which is roughly 50% &#8220;heavy.&#8221;  More if the barrel were slightly more massive.   200 L of regular ice would give displace up to an extra (1000-917)*0.2 = 16.6 kg of water, meaning it could support 36.5 lbs of metal at neutral buoyancy.  I thing we&#8217;re still in &#8220;plausible but not proven&#8221; territory.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uncertain Principles: Heavy Heavy Water So is it plausible that barrels of heavy water might&#8217;ve sunk, while barrels that contained ordinary water floated? One thing not considered, or another way of looking at the problem: given the conditions of February &hellip; <a href=\"http:\/\/blogs.scienceforums.net\/swansont\/archives\/7880\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[],"class_list":["post-7880","post","type-post","status-publish","format-standard","hentry","category-physics"],"_links":{"self":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/7880","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/comments?post=7880"}],"version-history":[{"count":0,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/7880\/revisions"}],"wp:attachment":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/media?parent=7880"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/categories?post=7880"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/tags?post=7880"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}