{"id":3158,"date":"2018-01-22T23:42:13","date_gmt":"2018-01-22T23:42:13","guid":{"rendered":"http:\/\/www.andrewgrantham.co.uk\/soundmirrors\/?p=3158"},"modified":"2018-01-22T23:42:13","modified_gmt":"2018-01-22T23:42:13","slug":"denge-sound-mirrors-from-a-drone","status":"publish","type":"post","link":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/denge-sound-mirrors-from-a-drone\/","title":{"rendered":"Denge sound mirrors from a drone"},"content":{"rendered":"<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Kent, UK. Between the World Wars, before the invention of radar, parabolic sound mirrors were used experimentally as early-warning devices by military air defence forces to detect incoming enemy aircraft by listening for the sound of their engines. <a href=\"https:\/\/twitter.com\/hashtag\/drone?src=hash&amp;ref_src=twsrc%5Etfw\">#drone<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/dji?src=hash&amp;ref_src=twsrc%5Etfw\">#dji<\/a> <a href=\"https:\/\/t.co\/ncSkWVMcww\">pic.twitter.com\/ncSkWVMcww<\/a><\/p>\n<p>&mdash; Bryan Bruner (@Therobotarmy1) <a href=\"https:\/\/twitter.com\/Therobotarmy1\/status\/948586281717698560?ref_src=twsrc%5Etfw\">January 3, 2018<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kent, UK. Between the World Wars, before the invention of radar, parabolic sound mirrors were used experimentally as early-warning devices by military air defence forces to detect incoming enemy aircraft by listening for the sound of their engines. #drone #dji pic.twitter.com\/ncSkWVMcww &mdash; Bryan Bruner (@Therobotarmy1) January 3, 2018<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[23,95],"class_list":["post-3158","post","type-post","status-publish","format-standard","hentry","category-sound-mirrors","tag-denge","tag-drone"],"_links":{"self":[{"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/posts\/3158","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=3158"}],"version-history":[{"count":2,"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/posts\/3158\/revisions"}],"predecessor-version":[{"id":3160,"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/posts\/3158\/revisions\/3160"}],"wp:attachment":[{"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/media?parent=3158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/categories?post=3158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.andrewgrantham.co.uk\/soundmirrors\/wp-json\/wp\/v2\/tags?post=3158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}