{"id":61887,"date":"2026-03-27T05:01:25","date_gmt":"2026-03-26T20:01:25","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=61887"},"modified":"2026-03-27T05:01:25","modified_gmt":"2026-03-26T20:01:25","slug":"magnetic-mayhem-watch-steel-balls-explode-with-the-magic-of-momentum-conservation-gauss-accelerator","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=61887&lang=en","title":{"rendered":"Magnetic Mayhem! Watch Steel Balls Explode with the Magic of Momentum Conservation (Gauss Accelerator)"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>I&#8217;m Ken Kuwako, your Science Trainer. Every day is an experiment!<\/strong><\/span><\/p>\n<p>Have you ever seen that moment when a steel ball clicks into one end of a row, and another one instantly shoots out from the opposite side? It looks like a simple trick, but hidden within that movement are the fundamental rules that govern our entire universe. Today, using just some steel pachinko balls and powerful magnets, let\u2019s peek into the invisible world of &#8220;Momentum.&#8221; I promise physics will feel a little more like magic and a lot more like home by the time we\u2019re done.<\/p>\n<h3>The Mystery of One-for-One<\/h3>\n<p>I recently conducted an experiment using pachinko balls and magnets to observe the conservation of momentum. First, take a look at this video\u2014the motion is surprisingly satisfying to watch.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u904b\u52d5\u91cf\u306e\u4fdd\u5b58\u3068\u529b\u5b66\u7684\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u4fdd\u5b58\u3010\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u3011\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/5_NXm6XY5yE?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>I lined up six pachinko balls and launched one single ball from the left toward the group.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-33410 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/9c41cc1f4cbe30c51d2eeb61fe2ed5df.jpg\" alt=\"\" width=\"655\" height=\"202\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/9c41cc1f4cbe30c51d2eeb61fe2ed5df.jpg 700w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/9c41cc1f4cbe30c51d2eeb61fe2ed5df-300x93.jpg 300w\" sizes=\"auto, (max-width: 655px) 100vw, 655px\" \/><\/p>\n<p>What do you think happens? The ball I rolled stops dead in its tracks the moment it hits, and\u2014as if by magic\u2014exactly one ball from the far right end flies off with the same speed.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-33411 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/43ed1cdd0c60d03870764ab4c3d9edb4.jpg\" alt=\"\" width=\"658\" height=\"206\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/43ed1cdd0c60d03870764ab4c3d9edb4.jpg 658w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/43ed1cdd0c60d03870764ab4c3d9edb4-300x94.jpg 300w\" sizes=\"auto, (max-width: 658px) 100vw, 658px\" \/><\/p>\n<p>In physics, we call this the Law of Conservation of Momentum. Momentum is defined as Mass \u00d7 Velocity. Since all these pachinko balls have roughly the same mass, the &#8220;oomph&#8221; or momentum of the first ball is passed through the neighbors like a baton in a relay race, until the very last ball carries it away. While the internal mechanics involve a series of rapid-fire collisions, the big picture shows us that momentum is perfectly preserved.<\/p>\n<h3>Double the Trouble: The Beauty of Symmetry<\/h3>\n<p>Next, I tried launching two pachinko balls as a set from the right side.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-33412\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/3b6749c86624075c88be814cf04565ef.jpg\" alt=\"\" width=\"685\" height=\"182\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/3b6749c86624075c88be814cf04565ef.jpg 836w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/3b6749c86624075c88be814cf04565ef-300x80.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/3b6749c86624075c88be814cf04565ef-768x204.jpg 768w\" sizes=\"auto, (max-width: 685px) 100vw, 685px\" \/><\/p>\n<p>In a beautiful display of physical symmetry, exactly two balls shoot out from the opposite end as a pair!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-33413 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/6070f134b450e54e6435ba64b142be29.jpg\" alt=\"\" width=\"687\" height=\"196\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/6070f134b450e54e6435ba64b142be29.jpg 772w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/6070f134b450e54e6435ba64b142be29-300x85.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/6070f134b450e54e6435ba64b142be29-768x219.jpg 768w\" sizes=\"auto, (max-width: 687px) 100vw, 687px\" \/><\/p>\n<p>The world of physics is elegant and balanced. In these examples, because the balls are hard and bouncy (meaning the &#8220;coefficient of restitution&#8221; is close to 1), not only is momentum conserved, but the overall mechanical energy stays nearly the same too.<\/p>\n<h3>Adding Magnet Power: The Gauss Accelerator Secret<\/h3>\n<p>Now, let\u2019s add a little &#8220;spice&#8221; to the mix. I attached a powerful neodymium magnet to the ball on the far right and launched another ball toward it. This time, as the ball gets close, the magnetic force pulls it in, causing it to accelerate rapidly right before the impact. As a result, the ball that shoots out from the left end is significantly faster than the original one.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-33414 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/9c41cc1f4cbe30c51d2eeb61fe2ed5df.jpg\" alt=\"\" width=\"795\" height=\"162\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-33415 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/f0453da749f573b20fd83d9860ca3df0.jpg\" alt=\"\" width=\"797\" height=\"209\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/f0453da749f573b20fd83d9860ca3df0.jpg 906w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/f0453da749f573b20fd83d9860ca3df0-300x79.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/f0453da749f573b20fd83d9860ca3df0-768x202.jpg 768w\" sizes=\"auto, (max-width: 797px) 100vw, 797px\" \/><\/p>\n<p>Check out this incredible moment in slow motion:<\/p>\n<p><iframe loading=\"lazy\" title=\"\u653e\u3066\uff01\u30cd\u30aa\u30b8\u30a6\u30e0\u78c1\u77f3\u7832\uff01\u3010\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u3011\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/gwGD3pBymhk?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>In this scenario, while momentum for the whole system is still conserved, the mechanical energy is not. That\u2019s because the magnet did &#8220;work&#8221; by pulling the ball in, essentially injecting extra energy into the system from the outside.<\/p>\n<p>This is the basic principle behind what is known as a Gauss Accelerator. It\u2019s amazing how a single magnet can change the dynamics so drastically\u2014it\u2019s the kind of experiment you\u2019ll want to try over and over again. I hope you enjoy experiencing the laws of the universe with these simple tools!<\/p>\n<h3>Inquiries and Requests<\/h3>\n<p>Bringing the wonder and excitement of science closer to you! I share fun science experiments you can do at home, along with easy-to-understand tips. Feel free to explore more!<\/p>\n<p>The &#8220;Science Notebook&#8221; content is now a book! Details <a href=\"https:\/\/amzn.to\/42PMCEL\">here<\/a>.<\/p>\n<p>Learn more about the administrator, Ken Kuwako, <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">here<\/a>.<\/p>\n<p>For various requests (writing, lectures, workshops, TV supervision, appearances, etc.), click <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">here<\/a>.<\/p>\n<p>Get the latest updates on <a href=\"https:\/\/x.com\/kuwako\">X (formerly Twitter)<\/a>!<\/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> Check out experiment videos on the <a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">Science Material Channel<\/a>!<\/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\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 \t<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 \t<li>\uff16\u670828\u65e5\uff08\u65e5\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=64337\">\u30c0\u30d3\u30f3\u30c1\u30de\u30b9\u30bf\u30fc\u30ba\uff20\u662d\u548c\u5973\u5b50<\/a><\/li>\r\n \t<li>6\u670830\u65e5\uff08\u706b\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=64801\">6\/30\u300023:56\u301c\u3000\u3010\u79d1\u5b66\u76e3\u4fee\u30fb\u51fa\u6f14\u3011\u300c\u5730\u7403\u307e\u308b\u3054\u3068\u5927\u5b9f\u9a13\u30cd\u30a4\u30c1\u30e3\u30fc\u30c6\u30a3\u30fc\u30c1\u30e3\u30fc\u300d\uff08TBS\uff09<\/a><\/li>\r\n \t<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 \t<li>12\u670826\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=64825\">\u30ca\u30ea\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\uff08\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\uff09\u958b\u50ac<\/a><\/li>\r\n<\/ul>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n \t<li>\uff17\u670816\u65e5\u767a\u58f2\u3000\u300e<a href=\"https:\/\/amzn.to\/4vmkUfb\">\u9ad8\u6821\u5165\u8a66 \u5206\u89e3\u554f\u984c\u96c6 \u7406\u79d1<\/a>\u300f\uff08\u5b66\u7814\uff09\u2026\u96e3\u3057\u3044\u554f\u984c\u3082\u5c0f\u3055\u306a\u554f\u984c\u306b\u5206\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u554f\u984c\u3092\u89e3\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u3093\u306a\u5206\u89e3\u306e\u6280\u8853\u304c\u8eab\u306b\u3064\u304f\u3088\u3046\u306b\u6df1\u304f\u95a2\u308f\u308a\u3092\u6301\u3063\u3066\u4f5c\u308a\u307e\u3057\u305f\u3002\r\n<img class=\"alignnone  wp-image-64694 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-20-18.25.27.jpeg\" alt=\"\" width=\"197\" height=\"275\" \/><\/li>\r\n \t<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\r\n<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\" \/>\r\n<\/strong><\/li>\r\n \t<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\r\n<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;\">\u3010\u65e5\u672c\u8a9e\u3011<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>\u3000\u3010\u82f1\u8a9e\u3011<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><\/p>\r\n\r\n<h3 style=\"text-align: center;\"><strong>Explore<\/strong><\/h3>\r\n<ul>\r\n \t<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 \t<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 \t<li><a href=\"https:\/\/www.youtube.com\/c\/kkuwako\">Youtube<\/a>\u2026\u79d1\u5b66\u5b9f\u9a13\u7b49\u306e\u52d5\u753b\u3092\u914d\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"https:\/\/music.youtube.com\/playlist?list=PLoK4ZvKN9S2NgpYIochcQs0aL-vrRB_Qw\">\u79d1\u5b66\u30e9\u30b8\u30aa<\/a>\u00a0\u2026\u79d1\u5b66\u30c8\u30d4\u30c3\u30af\u3092\u307b\u307c\u6bce\u65e5\u914d\u4fe1\u4e2d\uff01AI\u6280\u8853\u3092\u99c6\u4f7f\u3057\u3066\u4f5c\u6210\u3057\u305f\u300c\u8033\u3067\u697d\u3057\u3080\u79d1\u5b66\u300d\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=20940\">\u8b1b\u6f14<\/a>\u00a0\u2026\u5168\u56fd\u5404\u5730\u3067\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u30fb\u30b5\u30a4\u30a8\u30f3\u30b9\u30b7\u30e7\u30fc\u7b49\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/li>\r\n \t<li><a 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 \t<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>","protected":false},"excerpt":{"rendered":"<p>I&#8217;m Ken Kuwako, your Science Trainer. Every day is an experiment! Have you ever seen that moment when a  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":33413,"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":"","jetpack_post_was_ever_published":false},"categories":[781],"tags":[],"class_list":["post-61887","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\/06\/6070f134b450e54e6435ba64b142be29.jpg","jetpack-related-posts":[{"id":62239,"url":"https:\/\/phys-edu.net\/wp\/?p=62239&lang=en","url_meta":{"origin":61887,"position":0},"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":61938,"url":"https:\/\/phys-edu.net\/wp\/?p=61938&lang=en","url_meta":{"origin":61887,"position":1},"title":"Smash Together\u2014Half the Speed? Exploring Momentum with Colliding Carts!","author":"\u6851\u5b50 \u7814","date":"2026\u5e743\u670829\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\/2019\/06\/IMG_0787.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/IMG_0787.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/IMG_0787.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2019\/06\/IMG_0787.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":53396,"url":"https:\/\/phys-edu.net\/wp\/?p=53396&lang=en","url_meta":{"origin":61887,"position":2},"title":"Unlock the Mystery with Marbles! 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":61214,"url":"https:\/\/phys-edu.net\/wp\/?p=61214&lang=en","url_meta":{"origin":61887,"position":3},"title":"Can Iron Turn Into a Magnet!? Explore the Mysterious World of Magnetic Permeability with the \u201cPitland\u201d Experiment","author":"\u6851\u5b50 \u7814","date":"2026\u5e743\u67087\u65e5","format":false,"excerpt":"I am Ken Kuwako, a science trainer. Every day is a\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\/11\/5ecdd55af72b340ca87f7887febdab98.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/11\/5ecdd55af72b340ca87f7887febdab98.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/11\/5ecdd55af72b340ca87f7887febdab98.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/11\/5ecdd55af72b340ca87f7887febdab98.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":55745,"url":"https:\/\/phys-edu.net\/wp\/?p=55745&lang=en","url_meta":{"origin":61887,"position":4},"title":"The Invisible Water Balls: Unlocking the Secret of Super Absorbent Polymer and Light Refraction","author":"\u6851\u5b50 \u7814","date":"2025\u5e7411\u670811\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\/2016\/01\/d4389e61f7eb454f103a2586262c7900.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":51166,"url":"https:\/\/phys-edu.net\/wp\/?p=51166&lang=en","url_meta":{"origin":61887,"position":5},"title":"Fascinating Physics in Space: Action-Reaction, Inertia, and Conservation of Momentum (Classroom Use) [Highlights from Astronaut Wakata\u2019s Videos]","author":"\u6851\u5b50 \u7814","date":"2025\u5e748\u670824\u65e5","format":false,"excerpt":"I'm Ken Kuwako, a science trainer. Every day is an\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\/8ba6c6613ec68ac00f9520c486bdaa40.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/61887","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=61887"}],"version-history":[{"count":0,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/61887\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/media\/33413"}],"wp:attachment":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=61887"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=61887"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=61887"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}