{"id":419,"date":"2011-05-09T17:10:10","date_gmt":"2011-05-09T21:10:10","guid":{"rendered":"http:\/\/www.lallyacoustics.com\/blog\/?p=419"},"modified":"2011-05-19T11:34:40","modified_gmt":"2011-05-19T15:34:40","slug":"catch-a-wave","status":"publish","type":"post","link":"https:\/\/www.lallyacoustics.com\/blog\/archives\/419","title":{"rendered":"Catch a wave"},"content":{"rendered":"<p>You may know that the sounds you hear travel through the air as waves, but the invisibility of air makes this concept a tricky one to visualize.\u00a0 For those who like physics demonstrations (and who doesn&#8217;t), we recently came across this video of a series of pendulums&mdash;and the pendulum is perhaps the most accessible form of wave motion we witness in everyday life.<\/p>\n<p><iframe loading=\"lazy\" width=\"425\" height=\"349\" src=\"http:\/\/www.youtube.com\/embed\/yVkdfJ9PkRQ\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n<p>A pendulum&#8217;s length determines its frequency, just as sound waves in air have a frequency that corresponds to pitch.\u00a0 The demonstration superimposes different frequencies to illustrate traveling waves, standing waves, beats, and &#8220;random&#8221; noise, which are all phenomena that come from mixing different frequencies together.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>You may know that the sounds you hear travel through the air as waves, but the invisibility of air makes this concept a tricky one to visualize.\u00a0 For those who like physics demonstrations (and who doesn&#8217;t), we recently came across this video of a series of pendulums&mdash;and the pendulum is perhaps the most accessible form [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[51,53,52,25,30],"class_list":["post-419","post","type-post","status-publish","format-standard","hentry","category-technical","tag-demonstrations","tag-education","tag-frequency","tag-modes","tag-noise"],"_links":{"self":[{"href":"https:\/\/www.lallyacoustics.com\/blog\/wp-json\/wp\/v2\/posts\/419","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lallyacoustics.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lallyacoustics.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lallyacoustics.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lallyacoustics.com\/blog\/wp-json\/wp\/v2\/comments?post=419"}],"version-history":[{"count":4,"href":"https:\/\/www.lallyacoustics.com\/blog\/wp-json\/wp\/v2\/posts\/419\/revisions"}],"predecessor-version":[{"id":431,"href":"https:\/\/www.lallyacoustics.com\/blog\/wp-json\/wp\/v2\/posts\/419\/revisions\/431"}],"wp:attachment":[{"href":"https:\/\/www.lallyacoustics.com\/blog\/wp-json\/wp\/v2\/media?parent=419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lallyacoustics.com\/blog\/wp-json\/wp\/v2\/categories?post=419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lallyacoustics.com\/blog\/wp-json\/wp\/v2\/tags?post=419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}