{"id":405606,"date":"2017-05-08T02:00:00","date_gmt":"2017-05-07T23:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=da2f5ee00a8b67a1ba1306b640661016"},"modified":"2017-05-08T02:00:00","modified_gmt":"2017-05-07T23:00:00","slug":"determining-the-speed-of-sound-in-the-air-by-sound-wave-interference","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=405606","title":{"rendered":"Determining the speed of sound in the air by sound wave interference"},"content":{"rendered":"<p>Mechanical waves propagate through material media. Sound is an example of a mechanical wave. In<br \/>\nfluids like air, sound waves propagate through successive longitudinal perturbations of compression<br \/>\nand decompression. Audible sound frequencies for human ears range from 20 to 20 000 Hz. In this<br \/>\nstudy, the speed of sound v in the air is determined using the identification of maxima of<br \/>\ninterference from two synchronous waves at frequency f . The values of v were correct to 0 \u00b0C. The<br \/>\nexperimental average value of ##IMG##<br \/>\n[http:\/\/ej.iop.org\/images\/0143-0807\/38\/4\/045802\/ejpaa6d30ieqn1.gif] {${\\bar{\\nu }}_{\\exp }=336\\,\\pm<br \/>\n\\,4\\,{\\rm{m}}\\,{{\\rm{s}}}^{-1}$} was found. It is 1.5% larger than the reference value. The standard<br \/>\ndeviation of 4 m s \u22121 (1.2% of ##IMG##<br \/>\n[http:\/\/ej.iop.org\/images\/0143-0807\/38\/4\/045802\/ejpaa6d30ieqn2.gif] {${\\bar{\\nu }}_{\\exp }$} ) is an<br \/>\nimproved value by the use of the concept of the central lim&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mechanical waves propagate through material media. Sound is an example of a mechanical wave. In<br \/>\nfluids like air, sound waves propagate through successive longitudinal perturbations of compression<br \/>\nand decompression. Audible sound frequencies for human&#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-405606","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\/405606","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=405606"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/405606\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=405606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=405606"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=405606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}