{"id":64195,"date":"2026-06-05T04:46:35","date_gmt":"2026-06-04T19:46:35","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=64195"},"modified":"2026-06-05T04:46:35","modified_gmt":"2026-06-04T19:46:35","slug":"one-finger-makes-a-glass-sing-the-science-of-resonance-hidden-in-a-wine-glass","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=64195&lang=en","title":{"rendered":"One Finger Makes a Glass Sing! The Science of &#8220;Resonance&#8221; Hidden in a Wine Glass"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>I\u2019m Ken Kuwako, the Science Trainer. Every day is an experiment!<\/strong><\/span><\/p>\n<p>Have you ever made a wine glass sing with just a single finger? It\u2019s a surprisingly magical experience\u2014the glass suddenly resonates like a musical instrument in an orchestra.<\/p>\n<h3>Watch the Video First<\/h3>\n<p>If you lightly wet your finger and gently rub it around the rim of a wine glass, it produces a remarkably pure and beautiful tone. Take a moment to listen to the sound in the video below.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u30ef\u30a4\u30f3\u30b0\u30e9\u30b9\u306e\u6b4c\u58f0\u3092\u8074\u3044\u3066\u307f\u3088\u3046\uff01\u3010\u7269\u4f53\u306e\u56fa\u6709\u632f\u52d5\u3011\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/Uy5gFtVAvmE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h3>Why Does It Make a Sound? The Science of Friction and Vibration<\/h3>\n<p>What did you think? That clear, ringing note comes from the wine glass\u2019s natural frequency. When your damp finger moves along the rim, the contact between your finger and the glass repeatedly alternates between sticking and slipping.<\/p>\n<p>This is exactly the same principle that allows a violin bow to make a string vibrate. These tiny cycles of friction set the entire glass into motion, creating vibrations throughout the structure.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64191 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-05-4.44.24.jpeg\" alt=\"\" width=\"414\" height=\"230\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-05-4.44.24.jpeg 1462w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-05-4.44.24-300x167.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-05-4.44.24-1024x570.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-05-4.44.24-768x428.jpeg 768w\" sizes=\"auto, (max-width: 414px) 100vw, 414px\" \/><\/p>\n<p>When those vibrations match the glass\u2019s natural frequency, the sound becomes much louder and richer. A natural frequency is simply the frequency at which an object prefers to vibrate.<\/p>\n<p>Think about pushing someone on a swing. If you push at exactly the right moment each time, the swing goes higher and higher. The wine glass behaves the same way: when it\u2019s excited at just the right frequency, it resonates beautifully.<\/p>\n<h3>The Shape, Material, and Water Level All Change the Sound<\/h3>\n<p>One fascinating detail is that adding water to the glass lowers the pitch.<\/p>\n<p>As the amount of water increases, the vibrating system effectively becomes heavier. This reduces the natural frequency, causing the note to drop in pitch. By filling several glasses with different amounts of water, you can create an entire musical scale.<\/p>\n<p>In fact, there is a real instrument called the glass harp that works on this very principle, and it is still used in musical performances today.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-64192\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-05-4.44.49.jpeg\" alt=\"\" width=\"483\" height=\"269\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-05-4.44.49.jpeg 1460w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-05-4.44.49-300x167.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-05-4.44.49-1024x571.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-05-4.44.49-768x428.jpeg 768w\" sizes=\"auto, (max-width: 483px) 100vw, 483px\" \/><\/p>\n<p>The material of the glass also matters. Crystal glasses tend to produce the most resonant and sustained tones.<\/p>\n<p>Because crystal contains materials such as lead oxide or zinc oxide, it has a higher density and can maintain vibrations for a longer time. Ordinary thick glass, on the other hand, dampens vibrations more quickly, making it harder to produce a clear, ringing sound. The thickness and shape of the glass also influence both the pitch and the quality of the resonance.<\/p>\n<h3>The Wonder of Resonance All Around Us<\/h3>\n<p>At the heart of this phenomenon is a powerful concept in physics called resonance.<\/p>\n<p>Resonance appears throughout the world around us. One famous example is the collapse of the Tacoma Narrows Bridge, where wind-induced vibrations matched the bridge\u2019s natural frequency and contributed to its dramatic failure.<\/p>\n<p>You may also have heard stories of opera singers shattering wine glasses with their voices. The science is exactly the same. When the frequency of the singer\u2019s voice matches the glass\u2019s natural frequency, the vibrations can grow so strong that the glass eventually breaks.<\/p>\n<p>It\u2019s amazing to think that the beautiful sound created by a single fingertip is connected to such a fundamental principle of physics.<\/p>\n<h3>Give It a Try at Home!<\/h3>\n<p>The experiment is simple:<\/p>\n<p>\u2460 Place a wine glass on a stable surface.<\/p>\n<p>\u2461 Wet your fingertip with a little water.<\/p>\n<p>\u2462 Gently touch the rim and move your finger around it in a smooth circle at a steady speed.<\/p>\n<p>\u2463 Once you find the right motion, a clear, ringing tone will emerge.<\/p>\n<p>Try changing the amount of water in the glass or experimenting with different glass sizes. Comparing the sounds makes for an excellent science project and reveals just how much physics is hiding in everyday objects.<\/p>\n<p>You might be surprised by how beautiful the results can be. Give it a try!<\/p>\n<h3>About Inquiries and Requests<\/h3>\n<p>Bringing the wonder of science closer to everyday life! Here you&#8217;ll find easy-to-understand explanations of fun science experiments you can do at home, along with practical tips for getting the best results. Feel free to explore more articles!<\/p>\n<p>\u30fbThe Science Notebook content has been published as a book. Learn more <a href=\"https:\/\/amzn.to\/42PMCEL\">here<\/a>.<\/p>\n<p>\u30fbLearn more about Ken Kuwako, the site administrator, <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">here<\/a>.<\/p>\n<p>\u30fbFor writing projects, lectures, science workshops, TV consulting, appearances, and other requests, click <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">here<\/a>.<\/p>\n<p><span class=\"s2\">\u30fbGet the latest article updates on <a href=\"https:\/\/x.com\/kuwako\">X<\/a>!<\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.youtube.com\/user\/kkuwako\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35048\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/03\/3d9640dad7bc5538e76f92da1966ee19.jpg\" alt=\"\" width=\"30\" height=\"21\" \/><\/a><a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">Science Ideas Channel<\/a> features videos of exciting science experiments!<\/p>\n<p>&nbsp;<\/p>\n<h3>\uff16\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=64043\">\u30ec\u30e2\u30f3\u3084\u30aa\u30ec\u30f3\u30b8\u3067\u98a8\u8239\u3092\u5272\u308d\u3046\uff01\u30a4\u30f3\u30d1\u30af\u30c8\u304c\u629c\u7fa4\u306e\u30ea\u30e2\u30cd\u30f3\u98a8\u8239\u306e\u5b9f\u9a13<\/a><\/p>\r\n<p style=\"text-align: center;\"><img class=\"alignnone  wp-image-64045\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-01-4.45.24.jpeg\" alt=\"\" width=\"406\" height=\"349\" \/><\/p>\r\n<h3 style=\"text-align: left;\"><span style=\"font-size: medium;\"><b><strong>\u30c6\u30ec\u30d3\u756a\u7d44\u76e3\u4fee\u30fb\u30a4\u30d9\u30f3\u30c8\u7b49\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n<li>\uff16\u6708\uff13\u65e5\uff08\u6c34\uff0920:30\u301c\u3000\u300c<a href=\"https:\/\/phys-edu.net\/wp\/?p=63950\"><wbr \/>\u30d0\u30ab\u30ea\u30ba\u30e0\u306e\u3061\u3087\u3063\u3068\u30d0\u30ab\u308a\u30cf\u30ab\u3063\u3066\u307f\u305f\uff01<\/a>\u300d\uff08\u30c6\u30ec\u30d3\u6771\u4eac\uff09\u3092\u79d1\u5b66\u76e3\u4fee\u30fb\u51fa\u6f14\u3057\u307e\u3059\u3002\u30c6\u30fc\u30de\u306f\u300c<wbr \/>\u305d\u3070\u306e\u51fa\u524d\u306f\u4f55\u4eba\u524d\u307e\u3067\u904b\u3079\u308b\u306e\u304b\u3001\u9650\u754c\u3092\u6e2c\u3063\u3066\u307f\u305f\u300d\u3067\u3059\u3002\u3000<\/li>\r\n<li>\uff16\u6708\uff14\u65e5(\u6728)\u30007:00\u301c\u3000\u300c<a href=\"https:\/\/www.ntv.co.jp\/toppa\/\">THE\u7a81\u7834\u30d5\u30a1\u30a4\u30eb<\/a>\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09\u306b\u3064\u3044\u3066\u79d1\u5b66\u76e3\u4fee\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li>6\u670814\u65e5\uff08\u65e5\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=63530\">\u5343\u8449\u5927\u5b66\u30a4\u30f3\u30b9\u30bf\u30ec\u30fc\u30b7\u30e7\u30f3\u300c\u63a2\u7a76\u300d<\/a>\u306b\u3066\u8b1b\u5e2b\u3092\u52d9\u3081\u307e\u3059<\/li>\r\n<li>6\u670826\u65e5\uff08\u91d1\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=63067\">\u516c\u958b\u7814\u7a76\u4f1a\u300c\u8131\u4f5c\u696d\u5316\uff01\u30c7\u30b8\u30bf\u30eb\u5316\u3068\u6bb5\u968e\u7684\u6307\u5c0e\u3067\u5b9f\u73fe\u3059\u308b \u30aa\u30fc\u30e0\u306e\u6cd5\u5247\u306e\u63a2\u7a76\u300d<\/a><\/li>\r\n<li>\uff16\u670828\u65e5\uff08\u65e5\uff09\u3000<a href=\"https:\/\/www.davincimasters.jp\">\u30c0\u30d3\u30f3\u30c1\u30de\u30b9\u30bf\u30fc\u30ba\uff20\u662d\u548c\u5973\u5b50<\/a><\/li>\r\n<li>7\u670818\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=60018\">\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u300c\u30ca\u30ea\u30ab\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\u300d\u306e\u8b1b\u5e2b\u3092\u3057\u307e\u3059<\/a>\u3002\u304a\u4f1a\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\r\n<\/ul>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n<li>\u300e\u5927\u4eba\u306e\u305f\u3081\u306e\u9ad8\u6821\u7269\u7406\u5fa9\u7fd2\u5e33\u300f\uff08\u8b1b\u8ac7\u793e\uff09\u2026\u4e00\u822c\u5411\u3051\u306b\u65e5\u5e38\u306e\u7269\u7406\u306b\u3064\u3044\u3066\u516c\u5f0f\u3092\u5143\u306b\u7d10\u89e3\u304d\u307e\u3057\u305f\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=1827\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u3067\u306f\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<strong>\u203b\u5897\u5237\u304c\u304b\u304b\u308a\uff16\u5237\u3068\u306a\u308a\u307e\u3057\u305f\uff082026\/02\/01\uff09<br \/><img class=\"alignnone wp-image-10940 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg\" sizes=\"(max-width: 220px) 100vw, 220px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0.jpg 311w\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-07-05 0.43.51\" width=\"220\" height=\"192\" \/><br \/><\/strong><\/li>\r\n<li>\u300e\u304d\u3081\u308b!\u5171\u901a\u30c6\u30b9\u30c8 \u7269\u7406\u57fa\u790e \u6539\u8a02\u7248\u300f\uff08\u5b66\u7814\uff09\u2026\u3000\u9ad8\u6821\u7269\u7406\u306e\u53c2\u8003\u66f8\u3067\u3059\u3002\u30a4\u30e9\u30b9\u30c8\u3092\u591a\u304f\u3057\u3066\u30a4\u30e1\u30fc\u30b8\u304c\u6301\u3066\u308b\u3088\u3046\u306b\u63cf\u304d\u307e\u3057\u305f\u3002\u6388\u696d\u306b\u3064\u3044\u3066\u3044\u3051\u306a\u3044\u3001\u7269\u7406\u304c\u82e6\u624b\u3001\u305d\u3093\u306a\u751f\u5f92\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=45322\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u306f\u3053\u3061\u3089\u3002<br \/><img class=\"alignnone wp-image-45718 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg\" sizes=\"(max-width: 184px) 100vw, 184px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg 756w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c-300x269.jpg 300w\" alt=\"\" width=\"184\" height=\"165\" \/><\/li>\r\n<\/ul>\r\n<h3><span style=\"text-align: center;\">\u5404\u7a2eSNS\uff08\u66f4\u65b0\u60c5\u5831\u3092\u304a\u5c4a\u3051\uff01\uff09<\/span><\/h3>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/twitter.com\/kuwako\">X(Twitter)<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.instagram.com\/science_seeds\/\">instagram<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.facebook.com\/kuwakolab\/\">Facebook<\/a>\uff08\u65e5\u672c\u8a9e\uff09<\/p>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/bsky.app\/profile\/kagakunoneta.bsky.social\">BlueSky<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.threads.net\/@science_seeds?hl=ja\">Threads<\/a>\uff08\u82f1\u8a9e\uff09<\/p>\r\n<h3 style=\"text-align: center;\"><strong>Explore<\/strong><\/h3>\r\n<ul>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=30764\">\u697d\u3057\u3044\u5b9f\u9a13<\/a>\u2026\u304a\u5b50\u3055\u3093\u3068\u4e00\u7dd2\u306b\u5922\u4e2d\u306b\u306a\u308c\u308b\u30a4\u30c1\u30aa\u30b7\u306e\u79d1\u5b66\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u9ad8\u6821\u7269\u7406\u306e\u7406\u89e3\u3092\u6df1\u3081\u308b\u305f\u3081\u306e\u52d5\u753b\u6559\u6750\u3082\u7528\u610f\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=798\">\u7406\u79d1\u306e\u6559\u6750<\/a>\u2026 \u7406\u79d1\u6559\u5e2b\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\uff01\u6388\u696d\u306e\u8cea\u3092\u9ad8\u3081\u3001\u6e96\u5099\u3092\u52b9\u7387\u5316\u3059\u308b\u305f\u3081\u306e\u9078\u308a\u3059\u3050\u308a\u306e\u6559\u6750\u3092\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a 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href=\"http:\/\/phys-edu.net\/wp\/?page_id=37\">About<\/a>\u00a0\u2026\u300c\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u300d\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3084\u3001\u904b\u55b6\u8005\u3067\u3042\u308b\u6851\u5b50\u7814\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30fb\u60f3\u3044\u3092\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a>\u00a0\u2026\u5b9f\u9a13\u6559\u5ba4\u306e\u3054\u4f9d\u983c\u3001\u57f7\u7b46\u30fb\u8b1b\u6f14\u306e\u76f8\u8ac7\u3001\u79d1\u5b66\u76e3\u4fee\u7b49\u306f\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\u3002<\/li>\r\n<\/ul>\r\n<p>&nbsp;<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>I\u2019m Ken Kuwako, the Science Trainer. Every day is an experiment! Have you ever made a wine glass sing with jus [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":36624,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","sns_share_botton_hide":"","vkExUnit_sns_title":"","vkexunit_cta_each_option":"","_lightning_design_setting":{"layout":"default"},"footnotes":""},"categories":[781],"tags":[],"class_list":["post-64195","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-en"],"jetpack_featured_media_url":"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/10\/0268cda2f4295e6b62dd779c9d73b2ca.jpg","jetpack-related-posts":[{"id":63699,"url":"https:\/\/phys-edu.net\/wp\/?p=63699&lang=en","url_meta":{"origin":64195,"position":0},"title":"Can Two Glass Plates and Tape Create a Rainbow? We Built a DIY Device to See Light Interference in Action","author":"\u6851\u5b50 \u7814","date":"2026\u5e745\u670823\u65e5","format":false,"excerpt":"I\u2019m Kuwako Ken, your science trainer. Every day is\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/05\/a3359610083803b09cac5d1d884ed649.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/05\/a3359610083803b09cac5d1d884ed649.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/05\/a3359610083803b09cac5d1d884ed649.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/05\/a3359610083803b09cac5d1d884ed649.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":51654,"url":"https:\/\/phys-edu.net\/wp\/?p=51654&lang=en","url_meta":{"origin":64195,"position":1},"title":"Exam Alert! Electrostatic Induction &#038; Grounding Made Easy \u2014 5 Steps with the Gold-Leaf Electroscope","author":"\u6851\u5b50 \u7814","date":"2025\u5e749\u67086\u65e5","format":false,"excerpt":"Hi, I'm Ken Kuwako, a science trainer. Every day i\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2015\/04\/8b346b4cebc6a34919686ba2aa5ed05c.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":57338,"url":"https:\/\/phys-edu.net\/wp\/?p=57338&lang=en","url_meta":{"origin":64195,"position":2},"title":"Kitchen Science Magic! When a Stirrer Becomes a Wand \u2014 The Mysterious Lens That Flips Up and Down","author":"\u6851\u5b50 \u7814","date":"2025\u5e7412\u670815\u65e5","format":false,"excerpt":"I'm Ken Kuwako, your Science Trainer. Every day is\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2017\/02\/992ab5ab3389b666f429ded284abb2c3.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":54239,"url":"https:\/\/phys-edu.net\/wp\/?p=54239&lang=en","url_meta":{"origin":64195,"position":3},"title":"From Red Wine to Blue Flame: The Science of Distillation and How to Do It Safely","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u670812\u65e5","format":false,"excerpt":"I'm Ken Kuwako, your Science Trainer. 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Experience the Shocking Secret of the \u2018Dutch Tear\u2019","author":"\u6851\u5b50 \u7814","date":"2025\u5e749\u670823\u65e5","format":false,"excerpt":"I'm Ken Kuwako, a science trainer, and for me, eve\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/b7d92e6cb0e2adc9c150c85d9266ccc4.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/b7d92e6cb0e2adc9c150c85d9266ccc4.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/b7d92e6cb0e2adc9c150c85d9266ccc4.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/b7d92e6cb0e2adc9c150c85d9266ccc4.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":55043,"url":"https:\/\/phys-edu.net\/wp\/?p=55043&lang=en","url_meta":{"origin":64195,"position":5},"title":"An Origami Frog as a Physics Lesson!? 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