{"id":15731,"date":"2019-05-01T19:13:10","date_gmt":"2019-05-01T18:13:10","guid":{"rendered":"https:\/\/www.acasinhadamatematica.pt\/?p=15731"},"modified":"2021-12-02T19:35:42","modified_gmt":"2021-12-02T19:35:42","slug":"sound-waves-the-symphony-of-physics","status":"publish","type":"post","link":"https:\/\/www.acasinhadamatematica.pt\/?p=15731","title":{"rendered":"Sound Waves: The Symphony of Physics"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"194\" data-attachment-id=\"15736\" data-permalink=\"https:\/\/www.acasinhadamatematica.pt\/?attachment_id=15736\" data-orig-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/SoundWavesTheSymphonyofPhysics2.jpg\" data-orig-size=\"2530,480\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;4&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;NIKON D60&quot;,&quot;caption&quot;:&quot;????????????????????????????????????&quot;,&quot;created_timestamp&quot;:&quot;1464962958&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;26&quot;,&quot;iso&quot;:&quot;560&quot;,&quot;shutter_speed&quot;:&quot;0.033333333333333&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Sound Waves &amp;#8211; The Symphony of Physics\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/SoundWavesTheSymphonyofPhysics2-1024x194.jpg\" src=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/SoundWavesTheSymphonyofPhysics2-1024x194.jpg\" alt=\"\" class=\"wp-image-15736\" srcset=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/SoundWavesTheSymphonyofPhysics2-1024x194.jpg 1024w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/SoundWavesTheSymphonyofPhysics2-300x57.jpg 300w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/SoundWavesTheSymphonyofPhysics2-768x146.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Dr Helen Czerski investigates the extraordinary science behind the everyday sounds we hear and those that we normally cannot hear. Dr Helen Czerski takes us on a sonic odyssey through the sounds of the universe \u2013 to reveal what the physics of sound can tell us about the world and how it works.<\/p>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile has-luminous-vivid-amber-background-color has-background\" style=\"grid-template-columns:auto 27%\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" data-attachment-id=\"15733\" data-permalink=\"https:\/\/www.acasinhadamatematica.pt\/?attachment_id=15733\" data-orig-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/MakingSound.jpg\" data-orig-size=\"640,360\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Making Sound\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/MakingSound.jpg\" src=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/MakingSound.jpg\" alt=\"\" class=\"wp-image-15733 size-full\" srcset=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/MakingSound.jpg 640w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/MakingSound-300x169.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p><strong>Making Sound<\/strong><br>Dr Helen Czerski investigates the science behind the sounds we&#8217;re familiar with and the sounds that we normally can&#8217;t hear, from Big Ben to the Stromboli volcano.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile has-luminous-vivid-orange-background-color has-background\" style=\"grid-template-columns:auto 27%\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" data-attachment-id=\"15734\" data-permalink=\"https:\/\/www.acasinhadamatematica.pt\/?attachment_id=15734\" data-orig-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/UsingSound.jpg\" data-orig-size=\"640,360\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Using Sound\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/UsingSound.jpg\" src=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/UsingSound.jpg\" alt=\"\" class=\"wp-image-15734 size-full\" srcset=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/UsingSound.jpg 640w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/UsingSound-300x169.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p><strong>Using Sound<\/strong><br>Dr Helen Czerski examines the extraordinary messages sound waves carry and how they help us understand the world around us.<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>Fonte: <a href=\"https:\/\/www.bbc.co.uk\/bbcfour\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"BBC Four (opens in a new tab)\">BBC Four<\/a> |  <a rel=\"noreferrer noopener\" aria-label=\"Sound Waves: The Symphony of Physics (opens in a new tab)\" href=\"https:\/\/www.bbc.co.uk\/programmes\/b08h9ctd\" target=\"_blank\">Sound Waves: The Symphony of Physics<\/a> <\/li><\/ul>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><ul id='GTTabs_ul_15731' class='GTTabs' style='display:none'>\n<li id='GTTabs_li_0_15731' class='GTTabs_curr'><a  id=\"15731_0\" onMouseOver=\"GTTabsShowLinks('Making Sound'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Making Sound<\/a><\/li>\n<li id='GTTabs_li_1_15731' ><a  id=\"15731_1\" onMouseOver=\"GTTabsShowLinks('Using Sound'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Using Sound<\/a><\/li>\n<\/ul>\n\n<div class='GTTabs_divs GTTabs_curr_div' id='GTTabs_0_15731'>\n<span class='GTTabs_titles'><b>Making Sound<\/b><\/span><\/p>\n\n\n\n<style>.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }<\/style><div class=\"embed-container\"><iframe src=\"https:\/\/drive.google.com\/file\/d\/1Quu9Pd8XaXRstXKhG_acRQc4vVWSVyU0\/preview\" frameborder=\"0\" allowfullscreen=\"\"><\/iframe><\/div>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Helen_Czerski\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Dr Helen Czerski (opens in a new tab)\">Dr Helen Czerski<\/a> investigates the extraordinary science behind the sounds we&#8217;re familiar with and the sounds that we normally can&#8217;t hear.<\/p>\n\n\n\n<p>She begins by exploring the simplest of ideas: what is a sound? At the <a rel=\"noreferrer noopener\" aria-label=\"Palace of Westminster (opens in a new tab)\" href=\"https:\/\/en.wikipedia.org\/wiki\/Palace_of_Westminster\" target=\"_blank\">Palace of Westminster<\/a>, Helen teams up with scientists from the <a rel=\"noreferrer noopener\" aria-label=\"University of Leicester (opens in a new tab)\" href=\"https:\/\/le.ac.uk\/\" target=\"_blank\">University of Leicester<\/a> to carry out state-of-the-art measurements using lasers to reveal how the most famous bell in the world &#8211; <a href=\"https:\/\/en.wikipedia.org\/wiki\/Big_Ben\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Big Ben (opens in a new tab)\">Big Ben<\/a> &#8211; vibrates to create pressure waves in the air at particular frequencies. This is how Big Ben produces its distinct sound. It&#8217;s the first time that these laser measurements have been done on Big Ben.<\/p>\n\n\n\n<p>With soprano singer <a rel=\"noreferrer noopener\" aria-label=\"Lesley Garrett CBE (opens in a new tab)\" href=\"https:\/\/en.wikipedia.org\/wiki\/Lesley_Garrett\" target=\"_blank\">Lesley Garrett CBE<\/a>, Helen explores the science of the singing voice &#8211; revealing in intimate detail its inner workings and how it produces sound. Lesley undergoes a laryngoscopy to show the vocal folds of her larynx. At <a rel=\"noreferrer noopener\" aria-label=\"University College London (opens in a new tab)\" href=\"https:\/\/www.ucl.ac.uk\/\" target=\"_blank\">University College London<\/a>, Lesley sings I Dreamed a Dream inside an <a href=\"https:\/\/en.wikipedia.org\/wiki\/Magnetic_resonance_imaging\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"MRI (opens in a new tab)\">MRI<\/a> scanner to reveal how her vocal tract acts as a &#8216;resonator&#8217;, amplifying and shaping the sound from her larynx.<\/p>\n\n\n\n<p>Having explored the world of sounds with which we are familiar, Helen discovers the hidden world of sounds that lie beyond the range of human hearing. At the summit of <a rel=\"noreferrer noopener\" aria-label=\"Stromboli (opens in a new tab)\" href=\"https:\/\/en.wikipedia.org\/wiki\/Stromboli\" target=\"_blank\">Stromboli<\/a>, one of Europe&#8217;s most active volcanoes, Helen and volcanologist <a href=\"https:\/\/earth.boisestate.edu\/people\/jeffrey-johnson\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Dr Jeffrey Johnson (opens in a new tab)\">Dr Jeffrey Johnson<\/a> use a special microphone to record the extraordinary deep tone produced by the volcano as it explodes &#8211; a frequency far too low for the human ear to detect. Helen reveals how the volcano produces sound in a similar way to a musical instrument &#8211; with the volcano vent acting as a &#8216;sound resonator&#8217;.<\/p>\n\n\n\n<p>Finally, at the <a href=\"https:\/\/www.ast.cam.ac.uk\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"University of Cambridge's Institute of Astronomy (opens in a new tab)\">University of Cambridge&#8217;s Institute of Astronomy<\/a>, Helen meets a scientist who has discovered evidence of sound waves in space, created by a giant black hole. These sounds are one million billion times lower than the limit of human hearing and could be the key in figuring out how galaxy clusters, the largest structures in the universe, grow.<\/p>\n\n\n\n<p><div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_next'><a href='#GTTabs_ul_15731' onClick='GTTabs_show(1,15731)'>Using Sound &gt;&gt;<\/a><\/span><\/div><\/div>\n\n<div class='GTTabs_divs' id='GTTabs_1_15731'>\n<span class='GTTabs_titles'><b>Using Sound<\/b><\/span><\/p>\n\n\n\n<style>.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }<\/style><div class=\"embed-container\"><iframe src=\"https:\/\/www.dailymotion.com\/embed\/video\/x81mf9u\" frameborder=\"0\" allowfullscreen=\"\"><\/iframe><\/div>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Dr Helen Czerski examines the extraordinary messages sound waves carry and how they help us understand the world around us.<\/p>\n\n\n\n<p>Visiting a hidden location buried beneath the hills of Scotland, Helen experiences some of the most extreme acoustics in the world. Here she learns just how much information can be carried by sound. She discovers how sound has driven the evolution of truly incredible biological systems and complex relationships between creatures that exploit sound for hunting &#8211; and escaping from predators. Helen demonstrates how sound waves diffract (bend around objects) and in doing so help us sense danger and locate it.<\/p>\n\n\n\n<p>Through the story of a cochlea implant patient Helen explores the complicated way our ears can translate sound waves &#8211; a physical vibration in the air &#8211; into an electrical signal our brain can understand.<\/p>\n\n\n\n<p>Helen explains how we are not limited to passively detecting sound waves, we can also use them to actively probe the world. From detecting submarines to uncovering the secrets of our planet, sound waves are instrumental in revealing things hidden from the world of light. On the cold North Sea, Helen investigates how marine archaeologists are using sound waves to uncover the remarkable human stories buried beneath the sea. Yet we are not limited to using sound waves here on Earth, as Helen explains how sound has been used to better understand distant, alien worlds in the outer solar system.<\/p>\n<div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_prev'><a href='#GTTabs_ul_15731' onClick='GTTabs_show(0,15731)'>&lt;&lt; Making Sound<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Dr Helen Czerski investigates the extraordinary science behind the everyday sounds we hear and those that we normally cannot hear. Dr Helen Czerski takes us on a sonic odyssey through the sounds of the&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":15735,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4,7],"tags":[421,574,573,200],"series":[],"class_list":["post-15731","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciencia-e-tecnologia","category-video","tag-ciencia","tag-helen-czerski","tag-som","tag-video-2"],"views":1581,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2019\/05\/SoundWaves-TheSymphonyOfPhysics.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/15731","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15731"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/15731\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/media\/15735"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15731"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=15731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}