{"id":5,"date":"2007-08-12T17:54:33","date_gmt":"2007-08-12T22:54:33","guid":{"rendered":"http:\/\/arxivblog.com\/?p=5"},"modified":"2007-08-15T04:29:36","modified_gmt":"2007-08-15T09:29:36","slug":"why-does-the-wine-glass-sing","status":"publish","type":"post","link":"http:\/\/arxivblog.com\/?p=5","title":{"rendered":"Why does the wine glass sing?"},"content":{"rendered":"<p>Ah know ya&#8217;ll like a tipple or two. Who don&#8217;t? So ya&#8217;ll know how a-strokin and a-rubbin a wet finger on a wine glass can put some sounds up.<\/p>\n<p>Now Oleg &#8220;Chaser&#8221; Kirillov at <a href=\"http:\/\/www.msu.ru\/en\/\">Moscow State Lomonosov University<\/a> says we ain&#8217;t got no ah-dear how this process of sound generation works.  And to clarify things for ya&#8217;ll, he&#8217;s worked out how it occurs by considerin &#8220;<em>a gyroscopic system with two degrees of freedom under the action of small dissipative and non-conservative positional forces, which has its origin in the models of rotating bodies of revolution being in frictional contact.<\/em>&#8221;<\/p>\n<p>Apparently friction causes the glass to resonate at a frequency that generates sound (doh!).<\/p>\n<p>Chaser Kirrolov  says that if ya&#8217;ll have disc breaks that are a-squealin and a-screechin, then the same effect is to blame.<\/p>\n<p>But heads up, Chaser: what we need to know is not what makes &#8217;em squeal, but what&#8217;ll make &#8217;em stop.<\/p>\n<p>Ref: <a href=\"http:\/\/arxiv.org\/abs\/0708.0967\">arxiv.org\/abs\/0708.0967<\/a>: How to Play a Disc Brake<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ah know ya&#8217;ll like a tipple or two. Who don&#8217;t? So ya&#8217;ll know how a-strokin and a-rubbin a wet finger on a wine glass can put some sounds up. Now Oleg &#8220;Chaser&#8221; Kirillov at Moscow State Lomonosov University says we ain&#8217;t got no ah-dear how this process of sound generation works. And to clarify things [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-5","post","type-post","status-publish","format-standard","hentry","category-booze"],"_links":{"self":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/posts\/5","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5"}],"version-history":[{"count":0,"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/posts\/5\/revisions"}],"wp:attachment":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}