{"id":127600,"date":"2015-10-08T02:00:00","date_gmt":"2015-10-07T23:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=813f392b60954f6369ef62738e880c6f"},"modified":"2015-10-08T02:00:00","modified_gmt":"2015-10-07T23:00:00","slug":"a-novel-experimental-setup-to-study-the-hagen-poiseuille-and-bernoulli-equations-for-a-gas-anddetermination-of-the-viscosity-of-air","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=127600","title":{"rendered":"A novel experimental setup to study the Hagen\u2013Poiseuille and Bernoulli equations for a gas and\r\ndetermination of the viscosity of air"},"content":{"rendered":"<p>We have performed an experiment in which we have determined the viscosity of air using the<br \/>\nHagen\u2013Poiseuille equation in the proper range of the Reynolds number (Re). The experiment is novel<br \/>\nand simple which students even at high school level can perform with minimal equipment.The<br \/>\nexperiment brings out the fact that determination of viscosity of a fluid is possible only when its<br \/>\nReynolds number is sufficiently small. At very large Reynolds number, the gas behaves more like an<br \/>\ninviscid fluid and its flow rate satisfies Bernoulli\u2019s equation. In the intermediate range of the<br \/>\nReynolds number, the flow rate satisfies neither the Hagen\u2013Poiseuille equation nor the Bernoulli<br \/>\nequation. A wide range of Reynolds numbers from 40 to about 5000 has been studied. In the case of<br \/>\nair, this large range has not shown any sign of turbulence.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We have performed an experiment in which we have determined the viscosity of air using the<br \/>\nHagen\u2013Poiseuille equation in the proper range of the Reynolds number (Re). The experiment is novel<br \/>\nand simple which students even at high school level can pe&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-127600","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/127600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=127600"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/127600\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=127600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=127600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=127600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}