{"id":355165,"date":"2017-01-19T03:00:00","date_gmt":"2017-01-19T00:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=411df2485d1280b41dee3fc3c8b5aac6"},"modified":"2017-01-19T03:00:00","modified_gmt":"2017-01-19T00:00:00","slug":"the-monster-sound-pipe","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=355165","title":{"rendered":"The monster sound pipe"},"content":{"rendered":"<p>Producing a deep bass tone by striking a large 3 m (10 ft) flexible corrugated drainage pipe<br \/>\nimmediately grabs student attention. The fundamental pitch of the corrugated tube is found to be a<br \/>\nsemitone lower than a non-corrugated smooth pipe of the same length. A video (<br \/>\nhttps:\/\/youtu.be\/FU7a9d7N60Y [http:\/\/https:\/\/youtu.be\/FU7a9d7N60Y] ) of the demonstration is<br \/>\nincluded, which illustrates how an Internet keyboard can be used to estimate the fundamental pitches<br \/>\nof each pipe. Since both pipes have similar end corrections, the pitch discrepancy between the<br \/>\nsmooth pipe and drainage tube is due to the corrugations, which lower the speed of sound inside the<br \/>\nflexible tube, dropping its pitch a semitone.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Producing a deep bass tone by striking a large 3 m (10 ft) flexible corrugated drainage pipe<br \/>\nimmediately grabs student attention. The fundamental pitch of the corrugated tube is found to be a<br \/>\nsemitone lower than a non-corrugated smooth pipe of the sa&#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-355165","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\/355165","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=355165"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/355165\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=355165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=355165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=355165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}