{"id":1670,"date":"2009-04-10T17:59:36","date_gmt":"2009-04-10T17:59:36","guid":{"rendered":"http:\/\/www.andrewgrantham.co.uk\/soundmirrors\/?p=1670"},"modified":"2009-04-10T17:59:36","modified_gmt":"2009-04-10T17:59:36","slug":"parabolic-sound-mirrors-to-reflect-and-focus-sound","status":"publish","type":"post","link":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/parabolic-sound-mirrors-to-reflect-and-focus-sound\/","title":{"rendered":"Parabolic sound mirrors to reflect and focus sound"},"content":{"rendered":"<p>The Whipple Museum of the History of Science in Cambridge has a webpage about some <a href=\"http:\/\/www.hps.cam.ac.uk\/whipple\/explore\/acoustics\/parabolicsoundmirrors\/\">parabolic sound mirrors to reflect and focus sound<\/a>.<\/p>\n<blockquote><p>This apparatus consists of a pair of brass parabolic reflectors mounted on wooden stands. One of the reflectors has a bracket with a hook for hanging a pocket watch. The demonstrator would use this apparatus to show how the sound of a ticking watch may be heard at a considerable distance having first been made into a beam, projected over a distance and refocused. Very little is known about this pair of mirrors in the Whipple&#8217;s collection. It is thought that they were made in France or Germany during the second quarter of the nineteenth century.<br \/>\n<cite>Source: <a href=\"http:\/\/www.hps.cam.ac.uk\/whipple\/explore\/acoustics\/parabolicsoundmirrors\/\">Whipple Museum of the History of Science<\/a><\/cite> <\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>The Whipple Museum of the History of Science in Cambridge has a webpage about some parabolic sound mirrors to reflect and focus sound. This apparatus consists of a pair of brass parabolic reflectors mounted on wooden stands. One of the reflectors has a bracket with a hook for hanging a pocket watch. The demonstrator would [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,10],"tags":[],"class_list":["post-1670","post","type-post","status-publish","format-standard","hentry","category-miscellaneous-stuff","category-technology"],"_links":{"self":[{"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/posts\/1670","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/comments?post=1670"}],"version-history":[{"count":0,"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/posts\/1670\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/media?parent=1670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/categories?post=1670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/tags?post=1670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}