{"id":17883,"date":"2017-06-21T11:45:58","date_gmt":"2017-06-21T15:45:58","guid":{"rendered":"https:\/\/blogarchive.utc.edu\/news\/?p=17883"},"modified":"2017-10-12T12:19:30","modified_gmt":"2017-10-12T16:19:30","slug":"making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect","status":"publish","type":"post","link":"https:\/\/blogarchive.utc.edu\/news\/2017\/06\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\/","title":{"rendered":"Making music with light: Chemistry student spends summer researching the photoacoustic effect"},"content":{"rendered":"<p>Rachel Peters is making music with a laser.<\/p>\n<p>As a chemistry major entering her senior year, Peters and Dr. Han Park, assistant professor of chemistry, are researching what is called the photoacoustic effect.<!--more--><\/p>\n<p>Discovered in 1880 by Alexander Graham Bell, inventor of the telephone, the effect occurs when light is absorbed by a material, such as glass or a mineral like selenium, and transformed into sound waves through changes in heat and pressure. The photoacoustic effect explains how sound can be generated by light.<\/p>\n<div id=\"attachment_17884\" class=\"wp-caption alignright\" ><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"684\" data-attachment-id=\"17884\" data-permalink=\"https:\/\/blogarchive.utc.edu\/news\/2017\/06\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\/summer-research-17\/\" data-orig-file=\"https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036.jpg\" data-orig-size=\"1280,854\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2.8&quot;,&quot;credit&quot;:&quot;The University of Tennessee at Chattanooga&quot;,&quot;camera&quot;:&quot;NIKON D750&quot;,&quot;caption&quot;:&quot;Rachel Peters works in the lab during summer research in Grote Hall.&quot;,&quot;created_timestamp&quot;:&quot;1496323091&quot;,&quot;copyright&quot;:&quot;The University of Tennessee at Chattanooga&quot;,&quot;focal_length&quot;:&quot;60&quot;,&quot;iso&quot;:&quot;1000&quot;,&quot;shutter_speed&quot;:&quot;0.004&quot;,&quot;title&quot;:&quot;summer-research-17-&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"summer-research-17-\" data-image-description=\"&lt;p&gt;Photo of Rachel Peters&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Rachel Peters works in a lab in Grote Hall.&lt;\/p&gt;\n\" data-large-file=\"https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036-1024x684.jpg\" class=\"wp-image-17884\" src=\"https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036-1024x684.jpg\" alt=\"\" style=\"max-width: 100%;\"style=\"max-width: 100%;\" srcset=\"https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036-1024x684.jpg 1024w, https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036-300x200.jpg 300w, https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036-768x513.jpg 768w, https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036-580x387.jpg 580w, https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036-610x407.jpg 610w, https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036-250x167.jpg 250w, https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036-600x400.jpg 600w, https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><p class=\"wp-caption-text\">Rachel Peters works in a lab in Grote Hall.<\/p><\/div>\n<p>To create an acoustic sound wave in her experiments, Peters uses a laser to strike a glass tube filled with ethylene gas.<\/p>\n<p>\u201cWhen the laser hits the glass cell, the gas warms up, changes in pressure and generates a sound wave. I then use a high-powered microphone to record the sound,\u201d she explains.<\/p>\n<p>By changing the variables in her experiment, like the length of the tube or the concentration of the gas, Peters is able to change the frequency of the sound wave and create different musical notes.<\/p>\n<p>So far, she has been able to record multiple, distinct notes and organize them into a musical scale. By the end of her research, she hopes to be able to record a full song to demonstrate the fundamentals of the photoacoustic effects and thermodynamics in a fun, engaging way.<\/p>\n<p>\u201cIt would just be something simple, like \u2018Twinkle Twinkle Little Star\u2019 or \u2018The Star Spangled Banner,\u2019\u201d she says.<\/p>\n<p>When Park approached Peters to assist with his research, she jumped at the chance.<\/p>\n<p>\u201cUTC offers many opportunities for student research. It\u2019s usually something that\u2019s usually only available to graduate students at other schools,\u201d she says.<\/p>\n<p>\u201cThis experience has sharpened my critical thinking skills. Being in a lab, you can\u2019t always predict what\u2019s going to happen.<\/p>\n<p>\u201cI\u2019ve also been able to use a lot more equipment than what I\u2019ve used in the classroom. Doing something like this will give me an edge when it comes time to apply for graduate school.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rachel Peters is making music with a laser. As a chemistry major entering her senior year, Peters and Dr. Han Park, assistant professor of chemistry, are researching what is called the photoacoustic effect.<\/p>\n<p class=\"more-link-wrap\"><span><a class=\"more-link button text\" href=\"https:\/\/blogarchive.utc.edu\/news\/2017\/06\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\/\">Continue Reading <\/a><\/span><\/p>\n","protected":false},"author":294,"featured_media":17884,"comment_status":"open","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":"","_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_checkbox_needs-photo":"","_ef_editorial_meta_number_word-count":"","_ef_editorial_meta_checkbox_slider":"","_ef_editorial_meta_checkbox_featurette":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[70,48128,61,661],"tags":[8215,48283],"class_list":{"0":"post-17883","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-academics","8":"category-chemistry-physics","9":"category-college-of-arts-sciences","10":"category-students","11":"tag-department-of-chemistry","12":"tag-department-of-chemistry-and-physics","13":"entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Making music with light: Chemistry student spends summer researching the photoacoustic effect | UTC News Archive: Jul 2007 - Oct 2025<\/title>\n<meta name=\"description\" content=\"Rachel Peters is making music with a laser. 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As a chemistry major entering her senior year, Peters and Dr. Han Park, assistant professor of chemistry, are\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogarchive.utc.edu\/news\/2017\/06\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\/\" \/>\n<meta property=\"og:site_name\" content=\"UTC News Archive: Jul 2007 - Oct 2025\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/UTChattanooga\" \/>\n<meta property=\"article:published_time\" content=\"2017-06-21T15:45:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2017-10-12T16:19:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogarchive.utc.edu\/news\/files\/2017\/06\/summer-research-17-036.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2400\" \/>\n\t<meta property=\"og:image:height\" content=\"1602\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Laura Bond\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@UTChattanooga\" \/>\n<meta name=\"twitter:site\" content=\"@UTChattanooga\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Laura Bond\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/2017\\\/06\\\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/2017\\\/06\\\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\\\/\"},\"author\":{\"name\":\"Laura Bond\",\"@id\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/#\\\/schema\\\/person\\\/4a960a1e10408393ae1de2cb063c9d7c\"},\"headline\":\"Making music with light: Chemistry student spends summer researching the photoacoustic effect\",\"datePublished\":\"2017-06-21T15:45:58+00:00\",\"dateModified\":\"2017-10-12T16:19:30+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/2017\\\/06\\\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\\\/\"},\"wordCount\":363,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/2017\\\/06\\\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/files\\\/2017\\\/06\\\/summer-research-17-036.jpg\",\"keywords\":[\"Department of Chemistry\",\"Department of Chemistry and Physics\"],\"articleSection\":[\"Academics\",\"Chemistry and Physics\",\"College of Arts and Sciences\",\"Students\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/2017\\\/06\\\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/2017\\\/06\\\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\\\/\",\"url\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/2017\\\/06\\\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\\\/\",\"name\":\"Making music with light: Chemistry student spends summer researching the photoacoustic effect | UTC News Archive: Jul 2007 - Oct 2025\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/2017\\\/06\\\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/2017\\\/06\\\/making-music-light-chemistry-student-spends-summer-researching-photoacoustic-effect\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/files\\\/2017\\\/06\\\/summer-research-17-036.jpg\",\"datePublished\":\"2017-06-21T15:45:58+00:00\",\"dateModified\":\"2017-10-12T16:19:30+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/blogarchive.utc.edu\\\/news\\\/#\\\/schema\\\/person\\\/4a960a1e10408393ae1de2cb063c9d7c\"},\"description\":\"Rachel Peters is making music with a laser. 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