{"id":61603,"date":"2026-03-18T04:52:17","date_gmt":"2026-03-17T19:52:17","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=61603"},"modified":"2026-03-18T04:52:17","modified_gmt":"2026-03-17T19:52:17","slug":"can-a-shower-and-a-toy-water-wheel-teach-physics-a-fun-introduction-to-energy-with-a-ping-pong-gun","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=61603&lang=en","title":{"rendered":"Can a Shower and a Toy Water Wheel Teach Physics? A Fun Introduction to Energy with a Ping-Pong Gun"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>Hi, I&#8217;m Ken Kuwako, your Science Trainer. To me, every single day is an experiment!<\/strong><\/span><\/p>\n<p>We use the word &#8220;energy&#8221; all the time in our daily lives. But if someone asked you, &#8220;So, what exactly is energy?&#8221; would you know how to answer? Science textbooks usually define it as &#8220;the capacity to do work.&#8221; While accurate, that phrase is a bit abstract and hard to visualize, isn&#8217;t it?<\/p>\n<p>To bridge that gap, I decided to &#8220;visualize&#8221; this invisible force using a simple toy waterwheel. From kinetic energy to gravitational potential energy and elastic potential energy\u2014watch how these different forms of &#8220;mechanical energy&#8221; connect to tell a single, fascinating story. First, take a look at this summary video:<\/p>\n<p><iframe loading=\"lazy\" title=\"\u304a\u3082\u3061\u3083\u3067\u53ef\u8996\u5316\uff01\u529b\u5b66\u7684\u30a8\u30cd\u30eb\u30ae\u30fc\u3010\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u3011\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/W7QvlC3sMyk?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<p>Now, let\u2019s break down these three types of energy one by one.<\/p>\n<h3>Turning Momentum into Action: Kinetic Energy<\/h3>\n<p>First up is Kinetic Energy, which is the energy possessed by an object in motion. To demonstrate this, I blasted a waterwheel with a high-pressure stream from a showerhead.<\/p>\n<p>When the water hits the toy, the wheel starts spinning vigorously. It looks like a common sight, but from a physics perspective, it\u2019s a brilliant transformation. The energy held by the &#8220;moving water&#8221; is being converted into &#8220;work&#8221;\u2014the physical act of turning the wheel.<\/p>\n<p><a href=\"https:\/\/youtu.be\/mM-VCR6I62A\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-32940 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/3038e7e4e115dbdc39235043604e2048.jpg\" alt=\"\" width=\"461\" height=\"285\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/3038e7e4e115dbdc39235043604e2048.jpg 816w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/3038e7e4e115dbdc39235043604e2048-300x185.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/3038e7e4e115dbdc39235043604e2048-768x474.jpg 768w\" sizes=\"auto, (max-width: 461px) 100vw, 461px\" \/> <\/a><\/p>\n<p>I used this specific waterwheel toy for the experiment:<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/amzn.to\/47CETwd\">Waterwheel Toy (Amazon)<\/a><\/p>\n<h3>Height is Future Power: Gravitational Potential Energy<\/h3>\n<p>Next, let&#8217;s look at Gravitational Potential Energy, which is the energy stored in an object due to its height. This time, I used water dripping from a faucet to turn the wheel. By moving the waterwheel higher or lower, the spinning speed changed dramatically. The further the water falls, the more energy it gains to strike the wheel. This is the exact same principle used in hydroelectric dams!<\/p>\n<p>Also, increasing the water flow makes the wheel spin even faster. This gives us a great hint about how electricity works: &#8220;Current (amount of water) \u00d7 Voltage (height) = Power.&#8221; It\u2019s amazing to see how energy changes shape to support our modern lives.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/youtu.be\/Ro_1fAO-ifA\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-32941\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/8dcc4d390b1e70e823c56ced135893a4.jpg\" alt=\"\" width=\"552\" height=\"399\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/8dcc4d390b1e70e823c56ced135893a4.jpg 736w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/8dcc4d390b1e70e823c56ced135893a4-300x217.jpg 300w\" sizes=\"auto, (max-width: 552px) 100vw, 552px\" \/><\/a><\/p>\n<p>Check out this article for an even simpler version of this experiment you can do at your bathroom sink:<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"5MGommvdjk\"><p><a href=\"https:\/\/phys-edu.net\/wp\/?p=32534\">\u9ad8\u3044\u307b\u3069\u30d1\u30ef\u30fc\u30a2\u30c3\u30d7\uff01\uff1f\u6c34\u8eca\u306e\u304a\u3082\u3061\u3083\u3067\u5b66\u3076\u300c\u4f4d\u7f6e\u30a8\u30cd\u30eb\u30ae\u30fc\u300d<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8220;\u9ad8\u3044\u307b\u3069\u30d1\u30ef\u30fc\u30a2\u30c3\u30d7\uff01\uff1f\u6c34\u8eca\u306e\u304a\u3082\u3061\u3083\u3067\u5b66\u3076\u300c\u4f4d\u7f6e\u30a8\u30cd\u30eb\u30ae\u30fc\u300d&#8221; &#8212; \u79d1\u5b66\u306e\u30cd\u30bf\u5e33\" src=\"https:\/\/phys-edu.net\/wp\/?p=32534&#038;embed=true#?secret=miJwxOObFT#?secret=5MGommvdjk\" data-secret=\"5MGommvdjk\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<h3>Power Hidden in a Compressed Spring: Elastic Potential Energy<\/h3>\n<p>Finally, we have Elastic Potential Energy, the energy held by a deformed object as it tries to return to its original shape. I found the perfect tool to explain this: a &#8220;skeleton&#8221; spring-powered ping pong gun that lets you see exactly what\u2019s happening inside.<\/p>\n<p><a href=\"https:\/\/youtu.be\/jG7Gc5o6-tI\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-32942 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/54287ad9168bf15b262b0896ec83af9a.jpg\" alt=\"\" width=\"519\" height=\"292\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/54287ad9168bf15b262b0896ec83af9a.jpg 962w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/54287ad9168bf15b262b0896ec83af9a-300x169.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/54287ad9168bf15b262b0896ec83af9a-768x433.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/54287ad9168bf15b262b0896ec83af9a-320x180.jpg 320w\" sizes=\"auto, (max-width: 519px) 100vw, 519px\" \/><\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-61599 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-18-4.44.18.jpeg\" alt=\"\" width=\"283\" height=\"266\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-18-4.44.18.jpeg 528w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-18-4.44.18-300x282.jpeg 300w\" sizes=\"auto, (max-width: 283px) 100vw, 283px\" \/><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/amzn.to\/4cTUqLJ\">Ping Pong Gun<\/a><\/p>\n<p>The best part about this toy is that the tightly compressed spring is completely visible. You can see at a glance that by squeezing the spring, you are &#8220;storing&#8221; energy right there. The moment you pull the trigger, that stored energy is released all at once to do the &#8220;work&#8221; of launching the ball.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-32970 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/8e794682314aa1c9dc9033ebcc7e945f.jpg\" sizes=\"auto, (max-width: 361px) 100vw, 361px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/8e794682314aa1c9dc9033ebcc7e945f.jpg 660w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/04\/8e794682314aa1c9dc9033ebcc7e945f-300x242.jpg 300w\" alt=\"\" width=\"361\" height=\"291\" \/><\/p>\n<p>Kinetic, Potential, Elastic\u2014they may have different names, but they are all connected by one definition: &#8220;the capacity to do work.&#8221; By watching the wheel spin or the spring release, I hope you can feel the excitement of science in a way that words in a textbook just can&#8217;t capture.<\/p>\n<p>Keep an eye out\u2014you&#8217;ll start seeing &#8220;invisible energy&#8221; everywhere around you!<\/p>\n<h3>Inquiries and Requests<\/h3>\n<p>Let\u2019s make the wonders of science a part of your everyday life! I share fun experiments you can do at home and easy-to-understand tips. Feel free to explore more:<\/p>\n<p>My &#8220;Science Note&#8221; series is now available as a book! Details <a href=\"https:\/\/amzn.to\/42PMCEL\">here<\/a>.<\/p>\n<p>Learn more about me (Ken Kuwako) <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">here<\/a>.<\/p>\n<p>For requests (writing, speaking, workshops, TV supervision, etc.), click <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">here<\/a>.<br \/>\n<span class=\"s2\">&#8211; Stay updated with my latest posts on <a href=\"https:\/\/x.com\/kuwako\">X (Twitter)<\/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>Watch experiment videos on the <a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">Science Material Channel<\/a>!<\/p>\n<h3>\uff15\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p>\u30ad\u30fc\u30f3\u3068\u51b7\u3048\u308b\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\uff01\u6c17\u6e29\u304c\u4e0a\u304c\u3063\u3066\u304f\u308b\u3053\u306e\u6642\u671f\u30fb\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u3092\u4f7f\u3063\u305f\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\u306e\u5b9f\u9a13\u306f\u3044\u304b\u304c\uff1f<\/p>\r\n<p><img class=\"alignnone wp-image-39516 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg 1406w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-300x168.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-1024x572.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-768x429.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-320x180.jpg 320w\" alt=\"\" width=\"453\" height=\"253\" \/><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=39513\">\u6db2\u4f53\u30bc\u30ed\uff01\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u304c\u6d88\u3048\u308b\u307e\u3067\u306e\uff13\u6642\u9593\u3092\u79d1\u5b66\u3059\u308b\uff08\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\uff09<\/a><\/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>4\u670830\u65e5\uff08\u6728\uff09\u300cTHE\u7a81\u7834\u30d5\u30a1\u30a4\u30eb\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09\u306e<a href=\"https:\/\/phys-edu.net\/wp\/?p=62906\">\u79d1\u5b66\u76e3\u4fee\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\r\n<li>5\u67088\u65e5\uff08\u91d1\uff09<a href=\"https:\/\/phys-edu.net\/wp\/?p=62629\">\u7406\u79d1\u6559\u80b2\u30cb\u30e5\u30fc\u30b9<\/a>\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li>6\u670814\u65e5\uff08\u65e5\uff09\u3000\u5343\u8449\u5927\u5b66\u30a4\u30f3\u30b9\u30bf\u30ec\u30fc\u30b7\u30e7\u30f3\u300c\u63a2\u7a76\u300d\u306b\u3066\u8b1b\u5e2b\u3092\u52d9\u3081\u307e\u3059<\/li>\r\n<li>6\u670826\u65e5\uff08\u91d1\uff09\u3000\u5343\u8449\u5927\u5b66\u306e\u516c\u958b\u7814\u7a76\u4f1a\uff08\u4e2d\u5b66\u7406\u79d1\u306b\u3064\u3044\u3066\u6388\u696d\u516c\u958b\u4e88\u5b9a\uff09<\/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> \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","protected":false},"excerpt":{"rendered":"<p>Hi, I&#8217;m Ken Kuwako, your Science Trainer. To me, every single day is an experiment! We use the word &#038;#82 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":32940,"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-61603","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\/2019\/04\/3038e7e4e115dbdc39235043604e2048.jpg","jetpack-related-posts":[{"id":55043,"url":"https:\/\/phys-edu.net\/wp\/?p=55043&lang=en","url_meta":{"origin":61603,"position":0},"title":"An Origami Frog as a Physics Lesson!? The Hidden Secret of Energy Conversion Behind Its \u2018Boing!\u2019","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u670827\u65e5","format":false,"excerpt":"Ken Kuwako, Science Trainer. Every Day is an Exper\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\/10\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2025-10-27-6.06.39-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/10\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2025-10-27-6.06.39-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/10\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2025-10-27-6.06.39-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/10\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2025-10-27-6.06.39-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":62239,"url":"https:\/\/phys-edu.net\/wp\/?p=62239&lang=en","url_meta":{"origin":61603,"position":1},"title":"Unlock the Magic with a Transparent Tube? See the Law of Energy Conservation in Action! (Also Great for Measuring Gravity!)","author":"\u6851\u5b50 \u7814","date":"2026\u5e744\u670810\u65e5","format":false,"excerpt":"I\u2019m 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\/2019\/10\/b996698d56c3ca1ac4e35f8b92249486.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/10\/b996698d56c3ca1ac4e35f8b92249486.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/10\/b996698d56c3ca1ac4e35f8b92249486.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/10\/b996698d56c3ca1ac4e35f8b92249486.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":62778,"url":"https:\/\/phys-edu.net\/wp\/?p=62778&lang=en","url_meta":{"origin":61603,"position":2},"title":"Turn Your Phone into Magic Eyes! The Mind-Blowing World of Visualizing Heat for $400 (FLIR ONE Pro)","author":"\u6851\u5b50 \u7814","date":"2026\u5e744\u670826\u65e5","format":false,"excerpt":"This is Kuwako Lab, your science trainer. Every da\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\/2020\/01\/2cc20acee98485a6588f812c96f1ba42.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/01\/2cc20acee98485a6588f812c96f1ba42.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/01\/2cc20acee98485a6588f812c96f1ba42.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/01\/2cc20acee98485a6588f812c96f1ba42.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":56932,"url":"https:\/\/phys-edu.net\/wp\/?p=56932&lang=en","url_meta":{"origin":61603,"position":3},"title":"The 100-Yen Toy That Makes Invisible Sound and Earthquakes Visible","author":"\u6851\u5b50 \u7814","date":"2025\u5e7412\u67088\u65e5","format":false,"excerpt":"Science Trainer, Ken Kuwako. 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How Speed and Mass Create Energy \u2014 A Hands-on Guide to Kinetic Energy and Work","author":"\u6851\u5b50 \u7814","date":"2025\u5e749\u670829\u65e5","format":false,"excerpt":"I\u2019m 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\/2023\/01\/6541c95bc29ed89979ea1a2b9398b8f1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/01\/6541c95bc29ed89979ea1a2b9398b8f1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/01\/6541c95bc29ed89979ea1a2b9398b8f1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/01\/6541c95bc29ed89979ea1a2b9398b8f1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":61520,"url":"https:\/\/phys-edu.net\/wp\/?p=61520&lang=en","url_meta":{"origin":61603,"position":5},"title":"Kitchen Physics! 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