{"id":51690,"date":"2025-09-07T14:08:48","date_gmt":"2025-09-07T05:08:48","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=51690"},"modified":"2025-09-07T14:08:48","modified_gmt":"2025-09-07T05:08:48","slug":"the-big-bang-when-hydrogen-and-oxygen-ignite-a-dazzling-chemical-reaction-thatll-blow-your-mind","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=51690&lang=en","title":{"rendered":"The Big Bang: When Hydrogen and Oxygen Ignite! A Dazzling Chemical Reaction That&#8217;ll Blow Your Mind."},"content":{"rendered":"<p> I&#8217;m Ken Kuwako, a science trainer. Every day is an experiment. <\/p>\n<p style=\"text-align: center;\">\u3010<a href=\"https:\/\/music.youtube.com\/watch?v=iFEZ23hVzds&amp;si=n94vy5wAqKgwa_V_\">This Article is also a Podcast!<\/a>\u3011<\/p>\n<p><strong><span style=\"font-size: 14px;\">Experience the Power of Detonating Gas! A Chemical Reaction of Sound and Light<\/span><\/strong><\/p>\n<p>In the science lab, when students get to work with &#8220;hydrogen&#8221; and &#8220;oxygen,&#8221; their eyes light up. An invisible gas that makes a &#8220;pop!&#8221; sound and ignites when a flame is brought near is amazing enough. But when you ask them, &#8220;What happens if we mix hydrogen and oxygen?&#8221;, you&#8217;re met with looks of pure excitement. <span style=\"font-size: 14px;\">With proper preparation and safety precautions, this experiment becomes an unforgettable learning experience.<\/span><\/p>\n<p><strong><span style=\"font-size: 14px;\">\u2460 Gas Properties: What Happens When You Ignite Hydrogen or Oxygen?<\/span><\/strong><\/p>\n<p>First, let&#8217;s review the basics.<\/p>\n<p>\u2022 When you collect only hydrogen and bring a flame close: It burns with a small &#8220;pop&#8221; (combining with oxygen to form water).<\/p>\n<p>\u2022 When you collect only oxygen and bring a lit incense stick close: The flame gets bigger, demonstrating oxygen&#8217;s ability to support combustion.<\/p>\n<p>These are fundamental, safe experiments that get students fully engaged.<\/p>\n<p><strong><span style=\"font-size: 14px;\">\u2461 Detonating Gas &#8211; The Real Deal!<\/span><\/strong><\/p>\n<p>Now for the main event: detonating gas. This is a mixture of hydrogen and oxygen in a perfect 2:1 volume ratio. When you ignite this gas, BOOM!<\/p>\n<p><iframe loading=\"lazy\" title=\"\u5927\u7206\u767a\uff01\u6c34\u7d20\u3068\u9178\u7d20\u306e\u5316\u5408\u5b9f\u9a13\u3010\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u3011\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/v8xTflHJ0Q0?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>First, we need a specially designed rubber stopper to seal the gas.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29375\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2017\/10\/IMG_4393.jpg\" alt=\"\" width=\"180\" height=\"240\" \/><\/p>\n<p>The rubber stopper has a three-way stopcock, allowing you to easily add and remove gases. Using the stopcock and a syringe, we remove all the air from the bag. Then, we add 6cm\u00b3 of oxygen and 12cm\u00b3 of hydrogen into the bag and close the stopcock.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-29376\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2017\/10\/f0b8527825977dae5f42f753a406aa7a.png\" alt=\"\" width=\"310\" height=\"194\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2017\/10\/f0b8527825977dae5f42f753a406aa7a.png 640w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2017\/10\/f0b8527825977dae5f42f753a406aa7a-300x188.png 300w\" sizes=\"auto, (max-width: 310px) 100vw, 310px\" \/><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/amzn.to\/4pgPnca\">Amazon Hydrogen Gas Cylinder<\/a><\/p>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>\n<div style=\"border: 1px solid #95a5a6; border-radius: .75rem; background-color: #ffffff; width: 504px; margin: 0px; padding: 5px; text-align: center; overflow: hidden;\">\n<table>\n<tbody>\n<tr>\n<td style=\"width: 240px;\"><a style=\"word-wrap: break-word;\" href=\"https:\/\/hb.afl.rakuten.co.jp\/ichiba\/29c2e810.62af8e5c.29c2e811.cc00c346\/?pc=https%3A%2F%2Fitem.rakuten.co.jp%2Fsuzumori%2Ff35-1905%2F&amp;link_type=picttext&amp;ut=eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0dGV4dCIsInNpemUiOiIyNDB4MjQwIiwibmFtIjoxLCJuYW1wIjoicmlnaHQiLCJjb20iOjEsImNvbXAiOiJkb3duIiwicHJpY2UiOjEsImJvciI6MSwiY29sIjoxLCJiYnRuIjoxLCJwcm9kIjowLCJhbXAiOmZhbHNlfQ%3D%3D\" target=\"_blank\" rel=\"nofollow sponsored noopener\"><img decoding=\"async\" style=\"margin: 2px;\" title=\"[Product prices may have changed since the link was created.]\" src=\"https:\/\/hbb.afl.rakuten.co.jp\/hgb\/29c2e810.62af8e5c.29c2e811.cc00c346\/?me_id=1303884&amp;item_id=10001426&amp;pc=https%3A%2F%2Fthumbnail.image.rakuten.co.jp%2F%400_mall%2Fsuzumori%2Fcabinet%2Fexperiments%2Fscience%2Ff35-1905_1.jpg%3F_ex%3D240x240&amp;s=240x240&amp;t=picttext\" alt=\"[Product prices may have changed since the link was created.]\" border=\"0\" \/><\/a><\/td>\n<td style=\"vertical-align: top; width: 248px; display: block;\">\n<p style=\"font-size: 12px; line-height: 1.4em; text-align: left; margin: 0px; padding: 2px 6px; word-wrap: break-word;\"><a style=\"word-wrap: break-word;\" href=\"https:\/\/hb.afl.rakuten.co.jp\/ichiba\/29c2e810.62af8e5c.29c2e811.cc00c346\/?pc=https%3A%2F%2Fitem.rakuten.co.jp%2Fsuzumori%2Ff35-1905%2F&amp;link_type=picttext&amp;ut=eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0dGV4dCIsInNpemUiOiIyNDB4MjQwIiwibmFtIjoxLCJuYW1wIjoicmlnaHQiLCJjb20iOjEsImNvbXAiOiJkb3duIiwicHJpY2UiOjEsImJvciI6MSwiY29sIjoxLCJiYnRuIjoxLCJwcm9kIjowLCJhbXAiOmZhbHNlfQ%3D%3D\" target=\"_blank\" rel=\"nofollow sponsored noopener\">\u3010Ships Same Day on Weekdays\u3011Experimental Oxygen Gas Cylinder 580ml O2 for Science Class F35-1905 Narika<\/a><br \/>\nPrice: 592 yen (tax included, shipping not included) <span style=\"color: #bbb;\">(as of 1\/3\/2024)<\/span><\/p>\n<div style=\"margin: 10px;\">\n<p><a style=\"word-wrap: break-word;\" href=\"https:\/\/hb.afl.rakuten.co.jp\/ichiba\/29c2e810.62af8e5c.29c2e811.cc00c346\/?pc=https%3A%2F%2Fitem.rakuten.co.jp%2Fsuzumori%2Ff35-1905%2F&amp;link_type=picttext&amp;ut=eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0dGV4dCIsInNpemUiOiIyNDB4MjQwIiwibmFtIjoxLCJuYW1wIjoicmlnaHQiLCJjb20iOjEsImNvbXAiOiJkb3duIiwicHJpY2UiOjEsImJvciI6MSwiY29sIjoxLCJiYnRuIjoxLCJwcm9kIjowLCJhbXAiOmZhbHNlfQ%3D%3D\" target=\"_blank\" rel=\"nofollow sponsored noopener\"><img decoding=\"async\" style=\"float: left; max-height: 27px; width: auto; margin-top: 0;\" src=\"https:\/\/static.affiliate.rakuten.co.jp\/makelink\/rl.svg\" \/><\/a><\/p>\n<div style=\"float: right; width: 41%; height: 27px; background-color: #bf0000; color: #fff!important; font-size: 12px; font-weight: 500; line-height: 27px; margin-left: 1px; padding: 0 12px; border-radius: 16px; cursor: pointer; text-align: center;\">Purchase on Rakuten<\/div>\n<p>&nbsp;<\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>&nbsp;<\/p>\n<p style=\"color: #000000; font-size: 12px; line-height: 1.4em; margin: 5px; word-wrap: break-word;\">\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>\n<div style=\"border: 1px solid #95a5a6; border-radius: .75rem; background-color: #ffffff; width: 504px; margin: 0px; padding: 5px; text-align: center; overflow: hidden;\">\n<table>\n<tbody>\n<tr>\n<td style=\"width: 240px;\"><a style=\"word-wrap: break-word;\" href=\"https:\/\/hb.afl.rakuten.co.jp\/ichiba\/29c2e810.62af8e5c.29c2e811.cc00c346\/?pc=https%3A%2F%2Fitem.rakuten.co.jp%2Fsuzumori%2Ff35-1921%2F&amp;link_type=picttext&amp;ut=eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0dGV4dCIsInNpemUiOiIyNDB4MjQwIiwibmFtIjoxLCJuYW1wIjoicmlnaHQiLCJjb20iOjEsImNvbXAiOiJkb3duIiwicHJpY2UiOjEsImJvciI6MSwiY29sIjoxLCJiYnRuIjoxLCJwcm9kIjowLCJhbXAiOmZhbHNlfQ%3D%3D\" target=\"_blank\" rel=\"nofollow sponsored noopener\"><img decoding=\"async\" style=\"margin: 2px;\" title=\"[Product prices may have changed since the link was created.]\" src=\"https:\/\/hbb.afl.rakuten.co.jp\/hgb\/29c2e810.62af8e5c.29c2e811.cc00c346\/?me_id=1303884&amp;item_id=10005628&amp;pc=https%3A%2F%2Fthumbnail.image.rakuten.co.jp%2F%400_mall%2Fsuzumori%2Fcabinet%2F1610%2Ff35-1921.jpg%3F_ex%3D240x240&amp;s=240x240&amp;t=picttext\" alt=\"[Product prices may have changed since the link was created.]\" border=\"0\" \/><\/a><\/td>\n<td style=\"vertical-align: top; width: 248px; display: block;\">\n<p style=\"font-size: 12px; line-height: 1.4em; text-align: left; margin: 0px; padding: 2px 6px; word-wrap: break-word;\"><a style=\"word-wrap: break-word;\" href=\"https:\/\/hb.afl.rakuten.co.jp\/ichiba\/29c2e810.62af8e5c.29c2e811.cc00c346\/?pc=https%3A%2F%2Fitem.rakuten.co.jp%2Fsuzumori%2Ff35-1921%2F&amp;link_type=picttext&amp;ut=eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0dGV4dCIsInNpemUiOiIyNDB4MjQwIiwibmFtIjoxLCJuYW1wIjoicmlnaHQiLCJjb20iOjEsImNvbXAiOiJkb3duIiwicHJpY2UiOjEsImJvciI6MSwiY29sIjoxLCJiYnRuIjoxLCJwcm9kIjowLCJhbXAiOmZhbHNlfQ%3D%3D\" target=\"_blank\" rel=\"nofollow sponsored noopener\">\u3010Ships Same Day on Weekdays\u3011Experimental Hydrogen Gas Cylinder 580ml H2 for Science Class F35-1921 Narika<\/a><br \/>\nPrice: 1,100 yen (tax included, shipping not included) <span style=\"color: #bbb;\">(as of 1\/3\/2024)<\/span><\/p>\n<div style=\"margin: 10px;\">\n<p><a style=\"word-wrap: break-word;\" href=\"https:\/\/hb.afl.rakuten.co.jp\/ichiba\/29c2e810.62af8e5c.29c2e811.cc00c346\/?pc=https%3A%2F%2Fitem.rakuten.co.jp%2Fsuzumori%2Ff35-1921%2F&amp;link_type=picttext&amp;ut=eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJwaWN0dGV4dCIsInNpemUiOiIyNDB4MjQwIiwibmFtIjoxLCJuYW1wIjoicmlnaHQiLCJjb20iOjEsImNvbXAiOiJkb3duIiwicHJpY2UiOjEsImJvciI6MSwiY29sIjoxLCJiYnRuIjoxLCJwcm9kIjowLCJhbXAiOmZhbHNlfQ%3D%3D\" target=\"_blank\" rel=\"nofollow sponsored noopener\"><img decoding=\"async\" style=\"float: left; max-height: 27px; width: auto; margin-top: 0;\" src=\"https:\/\/static.affiliate.rakuten.co.jp\/makelink\/rl.svg\" \/><\/a><\/p>\n<div style=\"float: right; width: 41%; height: 27px; background-color: #bf0000; color: #fff!important; font-size: 12px; font-weight: 500; line-height: 27px; margin-left: 1px; padding: 0 12px; border-radius: 16px; cursor: pointer; text-align: center;\">Purchase on Rakuten<\/div>\n<p>&nbsp;<\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>&nbsp;<\/p>\n<p style=\"color: #000000; font-size: 12px; line-height: 1.4em; margin: 5px; word-wrap: break-word;\">\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Two insect pins are inserted into the rubber stopper, and a device for discharging electricity, like a lighter, is connected to the pins. When you press the lighter&#8217;s switch,<\/p>\n<p style=\"text-align: center;\">BOOM!<\/p>\n<p>the hydrogen and oxygen combine. The highlights are the mist that forms inside the bag after the experiment and how the bag collapses. (In the video, the rubber stopper flies off, but that&#8217;s part of the fun!)<\/p>\n<p><strong><span style=\"font-size: 14px;\">\u2462 My Epic Fail: The Detonating Soap Bubble Experiment<\/span><\/strong><\/p>\n<p>In the past, I tried an experiment where we put detonating gas inside soap bubbles and ignited them. It was visually spectacular and loud, and the students loved it. However, my carelessness led to a major mistake&#8230;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-48719 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/05\/4498209cbf3d5872b78acfe6b1d24db5.jpg\" alt=\"\" width=\"276\" height=\"273\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/05\/4498209cbf3d5872b78acfe6b1d24db5.jpg 830w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/05\/4498209cbf3d5872b78acfe6b1d24db5-300x296.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/05\/4498209cbf3d5872b78acfe6b1d24db5-768x759.jpg 768w\" sizes=\"auto, (max-width: 276px) 100vw, 276px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-29064 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2017\/09\/d60c34ec43992d489ef060361f4bcef3-1024x443.png\" alt=\"\" width=\"439\" height=\"190\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2017\/09\/d60c34ec43992d489ef060361f4bcef3-1024x443.png 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2017\/09\/d60c34ec43992d489ef060361f4bcef3-300x130.png 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2017\/09\/d60c34ec43992d489ef060361f4bcef3-768x332.png 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2017\/09\/d60c34ec43992d489ef060361f4bcef3.png 1072w\" sizes=\"auto, (max-width: 439px) 100vw, 439px\" \/><\/p>\n<p>One time, I brought the flame close without removing the rubber tube first. <span style=\"font-size: 14px;\">The whole apparatus exploded!<\/span><\/p>\n<p>The flask jumped and the equipment was blown apart. Luckily, no one was hurt, but I&#8217;ll never forget the cold sweat I broke into. The golden rule for detonating gas is &#8220;never ignite it while it&#8217;s still in the apparatus.&#8221;<\/p>\n<p><strong><span style=\"font-size: 14px;\">\u2463 A Safer Method: Igniting Detonating Gas in a Hose<\/span><\/strong><\/p>\n<p>I highly recommend this method: fill a clear hose with detonating gas and ignite it from one end. It&#8217;s safe, impressive, and perfect for science events or classroom demonstrations.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u3010\u7206\u97f3\u6ce8\u610f\u3011\u6c34\u7d20\u3068\u9178\u7d20\u3092\u6df7\u305c\u3066\u706b\u3092\u3064\u3051\u3066\u307f\u308b\u3068\uff01\u3010\u7206\u9cf4\u6c17\u3011\uff08\u6c34\u7d20\u306e\u71c3\u713c\uff09\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/z0GUYk4ANos?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>Here&#8217;s what you need: a hose (<span style=\"color: #ff0000;\">12mm inner diameter<\/span>, <span style=\"color: #ff0000;\">8m long, you can buy it by the meter at stores like Joyful Honda<\/span>), a rubber stopper (No. 1 fits perfectly), <a href=\"https:\/\/amzn.to\/4pgPnca\">hydrogen gas cylinder<\/a>, oxygen gas cylinder, an umbrella bag, a lighter, earplugs, and safety glasses.<\/p>\n<p>Be aware that the hydrogen cylinder runs out quickly. For this experiment, I found that one cylinder is good for about three uses.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42512 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/fd7e51adbe18babe350d8947f020f9d6.jpg\" alt=\"\" width=\"380\" height=\"321\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/fd7e51adbe18babe350d8947f020f9d6.jpg 1182w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/fd7e51adbe18babe350d8947f020f9d6-300x253.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/fd7e51adbe18babe350d8947f020f9d6-1024x865.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/fd7e51adbe18babe350d8947f020f9d6-768x648.jpg 768w\" sizes=\"auto, (max-width: 380px) 100vw, 380px\" \/><\/p>\n<p>I used a hose with a 12mm inner diameter. This one is 10m long, which is a bit long, so I cut it down to 8m. That&#8217;s a 2m cut.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42514 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/114120c06a37c7bac4545751cb20d7c4.jpg\" alt=\"\" width=\"393\" height=\"472\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/114120c06a37c7bac4545751cb20d7c4.jpg 844w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/114120c06a37c7bac4545751cb20d7c4-250x300.jpg 250w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/114120c06a37c7bac4545751cb20d7c4-768x923.jpg 768w\" sizes=\"auto, (max-width: 393px) 100vw, 393px\" \/><\/p>\n<p><a href=\"https:\/\/amzn.to\/48aySrE\">Amazon<\/a>. On Rakuten, you can find it here: <a style=\"word-wrap: break-word;\" href=\"https:\/\/hb.afl.rakuten.co.jp\/ichiba\/31056271.2e335cbe.31056272.1f9587e2\/?pc=https%3A%2F%2Fitem.rakuten.co.jp%2Fkougland33%2Fts_7651961%2F&amp;link_type=text&amp;ut=eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJ0ZXh0Iiwic2l6ZSI6IjI0MHgyNDAiLCJuYW0iOjEsIm5hbXAiOiJyaWdodCIsImNvbSI6MSwiY29tcCI6ImRvd24iLCJwcmljZSI6MSwiYm9yIjoxLCJjb2wiOjEsImJidG4iOjEsInByb2QiOjAsImFtcCI6ZmFsc2V9\" target=\"_blank\" rel=\"nofollow sponsored noopener\">TRUSCO Clear Hose 12\u00d715 10m cut (1 roll) TTM-1215C10<\/a><\/p>\n<p>It&#8217;s also available at home centers. They sold it by the meter. I could have gone for 10m, but 8m felt right. The rubber can degrade, so it&#8217;s best to use a new one.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42583 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/ee7b23b16801201b32bed5da84cb740c.jpg\" alt=\"\" width=\"472\" height=\"510\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/ee7b23b16801201b32bed5da84cb740c.jpg 946w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/ee7b23b16801201b32bed5da84cb740c-278x300.jpg 278w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/ee7b23b16801201b32bed5da84cb740c-768x830.jpg 768w\" sizes=\"auto, (max-width: 472px) 100vw, 472px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42584 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/adc182231e3ea611ed34cb18a1a827ee.jpg\" alt=\"\" width=\"463\" height=\"348\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/adc182231e3ea611ed34cb18a1a827ee.jpg 1080w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/adc182231e3ea611ed34cb18a1a827ee-300x226.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/adc182231e3ea611ed34cb18a1a827ee-1024x770.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/adc182231e3ea611ed34cb18a1a827ee-768x577.jpg 768w\" sizes=\"auto, (max-width: 463px) 100vw, 463px\" \/><\/p>\n<p>A No. 1 rubber stopper fits this perfectly.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42513\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/04879134497e8597670f8e19ffc213da.jpg\" alt=\"\" width=\"394\" height=\"438\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/04879134497e8597670f8e19ffc213da.jpg 748w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/04879134497e8597670f8e19ffc213da-270x300.jpg 270w\" sizes=\"auto, (max-width: 394px) 100vw, 394px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42515 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/c888fd4d217df6a8143bf69ad6fb1a3d.jpg\" alt=\"\" width=\"387\" height=\"262\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/c888fd4d217df6a8143bf69ad6fb1a3d.jpg 762w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/c888fd4d217df6a8143bf69ad6fb1a3d-300x203.jpg 300w\" sizes=\"auto, (max-width: 387px) 100vw, 387px\" \/><\/p>\n<p>First, we divide the umbrella bag into three equal sections and mark the 2:1 ratio. We fill it with oxygen to the &#8220;1&#8221; mark and then add hydrogen to the &#8220;2&#8221; mark. This mixture is our detonating gas. <span style=\"font-size: 14px;\">Next, attach the tip of the umbrella bag to the hose and slowly fold the bag to transfer the mixed gas into the hose. Do not cap the hose with the stopper yet. Once all the gas is in the hose,<\/span><\/p>\n<p>Cap one end with the rubber stopper.<\/p>\n<p>Insert the lighter into the other end.<\/p>\n<p>Now you&#8217;re ready! On the count of &#8220;3, 2, 1,&#8221; pull the lighter&#8217;s trigger to ignite a powerful chemical reaction with a loud sound and a flash of light inside.<\/p>\n<p>Be careful as it makes a loud bang! Cover your ears as a precaution and always wear safety glasses.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-42508\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/69be9c200c43ffafb7b9e0396bec05f5.jpg\" alt=\"\" width=\"922\" height=\"358\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/69be9c200c43ffafb7b9e0396bec05f5.jpg 922w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/69be9c200c43ffafb7b9e0396bec05f5-300x116.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/69be9c200c43ffafb7b9e0396bec05f5-768x298.jpg 768w\" sizes=\"auto, (max-width: 922px) 100vw, 922px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-42509\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/5af22fd46a249e3ecfaf6488382da220.jpg\" alt=\"\" width=\"880\" height=\"332\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/5af22fd46a249e3ecfaf6488382da220.jpg 880w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/5af22fd46a249e3ecfaf6488382da220-300x113.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/03\/5af22fd46a249e3ecfaf6488382da220-768x290.jpg 768w\" sizes=\"auto, (max-width: 880px) 100vw, 880px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-44541\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/6bb830e042a1d8b1f82cf2bca7e03b8f.jpg\" alt=\"\" width=\"1502\" height=\"380\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/6bb830e042a1d8b1f82cf2bca7e03b8f.jpg 1502w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/6bb830e042a1d8b1f82cf2bca7e03b8f-300x76.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/6bb830e042a1d8b1f82cf2bca7e03b8f-1024x259.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/6bb830e042a1d8b1f82cf2bca7e03b8f-768x194.jpg 768w\" sizes=\"auto, (max-width: 1502px) 100vw, 1502px\" \/><\/p>\n<p>You can observe the light and sound, the phenomenon of an explosion, and the stopper on the opposite end shooting off with force as the gas expands from the heat. <span style=\"font-size: 14px;\">You can also see condensation form inside the hose, indicating that water was produced. For a more definitive result, you could test it with cobalt chloride paper.<\/span><\/p>\n<h3>Inquiries and Requests<\/h3>\n<p>We want to make the wonders of science more accessible! We&#8217;ve put together fun and easy-to-understand science experiments you can do at home, along with tips and tricks. Feel free to search our blog!<br \/>\n\u2022 About the operator, Ken Kuwako: <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">Click here<\/a><br \/>\n\u2022 For requests (writing, lectures, science classes, TV supervision, appearances, etc.): <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">Click here<\/a><br \/>\n<span class=\"s2\">\u2022 For article updates, follow us 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\">Our Science Trick Channel<\/a> features experiment videos!<\/p>\n<h3>\uff14\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<ul>\r\n \t<li><a href=\"https:\/\/phys-edu.net\/wp\/?p=46937&amp;\">\u5149\u306e\u9b54\u6cd5CMY\u30a6\u30a9\u30fc\u30bf\u30fc\u30ad\u30e5\u30fc\u30d6<\/a>\uff1a\u5149\u306e\u9b54\u6cd5\u3092\u4f53\u9a13\u305b\u3088\uff01\u6c34\u3092\u6ce8\u3050\u3068\u65b0\u305f\u306a\u7acb\u65b9\u4f53\u304c\u51fa\u73fe\u3059\u308b\u9b54\u6cd5\u306e\u3088\u3046\u306a\u5b9f\u9a13\u3067\u3059\u3002<\/li>\r\n<\/ul>\r\n<img class=\"alignnone wp-image-47312 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/71274840332ac4ee4620fb1475a1d79c.jpg\" sizes=\"auto, (max-width: 267px) 100vw, 267px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/71274840332ac4ee4620fb1475a1d79c.jpg 1292w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/71274840332ac4ee4620fb1475a1d79c-272x300.jpg 272w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/71274840332ac4ee4620fb1475a1d79c-928x1024.jpg 928w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/12\/71274840332ac4ee4620fb1475a1d79c-768x848.jpg 768w\" alt=\"\" width=\"267\" height=\"294\" \/>\r\n<h3 style=\"text-align: left;\"><span style=\"font-size: medium;\"><b><strong>\u30c6\u30ec\u30d3\u756a\u7d44\u30fb\u79d1\u5b66\u76e3\u4fee\u7b49\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n \t<li>4\u67089\u65e5\uff08\u6728\uff09\u300cTHE\u7a81\u7834\u30d5\u30a1\u30a4\u30eb\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3 \uff09\u306e\u79d1\u5b66\u76e3\u4fee\u3092\u884c\u3044\u307e\u3057\u305f\u3002\u591c7\u6642\u301c\u3068\u306a\u308a\u307e\u3059\u3002<\/li>\r\n<\/ul>\r\n<h3><span style=\"font-size: medium;\"><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n \t<li><a href=\"https:\/\/phys-edu.net\/wp\/?p=61585\">\u30b5\u30af\u30bb\u30b915 \uff14\u6708\u53f7<\/a>\u306b\u3066\u3001\u91ce\u7403\u306e\u79d1\u5b66\u306b\u3064\u3044\u3066\u8a18\u4e8b\u3092\u57f7\u7b46\u3057\u307e\u3057\u305f\uff082026\/3\uff09<\/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=\"font-size: medium;\"><b>\u8b1b\u5e2b\u30fb\u30b7\u30e7\u30fc\u30fb\u7814\u7a76\u7b49\u306e\u304a\u77e5\u3089\u305b<\/b><\/span><\/h3>\r\n<ul>\r\n \t<li>3\/20\uff08\u91d1\uff09\u3000\u65e5\u672c\u7406\u79d1\u6559\u80b2\u5b66\u4f1a\u30aa\u30f3\u30e9\u30a4\u30f3\u5168\u56fd\u5927\u4f1a2026\u300c<a href=\"https:\/\/phys-edu.net\/wp\/?p=60439\">\u6163\u6027\u306e\u6cd5\u5247\u306e\u6982\u5ff5\u5f62\u6210\u3092\u76ee\u6307\u3057\u305f\u63a2\u7a76\u7684\u306a\u5b66\u3073\u306e\u5b9f\u8df5\u300d<\/a>\u306b\u3064\u3044\u3066\u767a\u8868\u3057\u307e\u3057\u305f\u3002<\/li>\r\n \t<li>6\/14\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 \t<li>7\/18\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>10\/10\uff08\u571f\uff09\u3000\u79d8\u5bc6\u5175\u5668\u300c\u5e2f\u96fb\u30ac\u30f3\u300d\u304c\u70b8\u88c2\uff01\u30d3\u30ea\u30d3\u30ea\uff01\u30c9\u30ad\u30c9\u30ad\uff01\u9759\u96fb\u6c17\u30b5\u30a4\u30a8\u30f3\u30b9\u30b7\u30e7\u30fc\uff20\u5343\u8449\u5e02\u79d1\u5b66\u30d5\u30a7\u30b9\u30bf\uff08\u5348\u5f8c\u4e88\u5b9a\uff09<\/li>\r\n \t<li><span style=\"text-align: center;\">\u5404\u7a2eSNS\u3000<\/span><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><span style=\"text-align: center;\">\uff0f<\/span><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><\/li>\r\n<\/ul>\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>\r\n<ul class=\"wp-block-latest-posts__list is-grid columns-3 has-dates wp-block-latest-posts\"><li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62767&#038;lang=es\" aria-label=\"\u00a1Tu clase convertida en un laberinto de luz! El rastro del l\u00e1ser entre la niebla es simplemente espectacular.\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/12\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-04-24-18.07.54-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62767&#038;lang=es\">\u00a1Tu clase convertida en un laberinto de luz! El rastro del l\u00e1ser entre la niebla es simplemente espectacular.<\/a><time datetime=\"2026-04-25T05:18:22+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670825\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62765&#038;lang=fi\" aria-label=\"Luokkahuone muuttuu valon labyrintiksi! Laserin ja sumun luoma \u201dvalon j\u00e4lki\u201d on h\u00e4ik\u00e4isev\u00e4n kaunis.\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/12\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-04-24-18.07.54-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62765&#038;lang=fi\">Luokkahuone muuttuu valon labyrintiksi! Laserin ja sumun luoma \u201dvalon j\u00e4lki\u201d on h\u00e4ik\u00e4isev\u00e4n kaunis.<\/a><time datetime=\"2026-04-25T05:17:43+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670825\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62763&#038;lang=hi\" aria-label=\"\u0915\u094d\u0932\u093e\u0938\u0930\u0942\u092e \u092c\u0928\u093e \u0930\u094b\u0936\u0928\u0940 \u0915\u0940 \u092d\u0942\u0932\u092d\u0941\u0932\u0948\u092f\u093e! \u0932\u0947\u091c\u093c\u0930 \u0914\u0930 \u0927\u0941\u0902\u0927 \u0938\u0947 \u092c\u0928\u0940 &#8216;\u092a\u094d\u0930\u0915\u093e\u0936 \u0915\u0940 \u092a\u0926\u091a\u093f\u0939\u094d\u0928&#8217; \u0915\u0940 \u091c\u093e\u0926\u0941\u0908 \u0938\u0941\u0902\u0926\u0930\u0924\u093e\u0964\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/12\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-04-24-18.07.54-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62763&#038;lang=hi\">\u0915\u094d\u0932\u093e\u0938\u0930\u0942\u092e \u092c\u0928\u093e \u0930\u094b\u0936\u0928\u0940 \u0915\u0940 \u092d\u0942\u0932\u092d\u0941\u0932\u0948\u092f\u093e! \u0932\u0947\u091c\u093c\u0930 \u0914\u0930 \u0927\u0941\u0902\u0927 \u0938\u0947 \u092c\u0928\u0940 &#8216;\u092a\u094d\u0930\u0915\u093e\u0936 \u0915\u0940 \u092a\u0926\u091a\u093f\u0939\u094d\u0928&#8217; \u0915\u0940 \u091c\u093e\u0926\u0941\u0908 \u0938\u0941\u0902\u0926\u0930\u0924\u093e\u0964<\/a><time datetime=\"2026-04-25T05:16:31+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670825\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62761&#038;lang=ko\" aria-label=\"\uad50\uc2e4\uc774 \ube5b\uc758 \ubbf8\ub85c\ub85c?! \ub808\uc774\uc800\uc640 \uc548\uac1c\uac00 \ub9cc\ub4e0 \u2018\ube5b\uc758 \ubc1c\uc790\ucde8\u2019\uac00 \ub108\ubb34 \uc601\ub871\ud55c \uac74\uc5d0 \ub300\ud558\uc5ec.\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/12\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-04-24-18.07.54-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62761&#038;lang=ko\">\uad50\uc2e4\uc774 \ube5b\uc758 \ubbf8\ub85c\ub85c?! \ub808\uc774\uc800\uc640 \uc548\uac1c\uac00 \ub9cc\ub4e0 \u2018\ube5b\uc758 \ubc1c\uc790\ucde8\u2019\uac00 \ub108\ubb34 \uc601\ub871\ud55c \uac74\uc5d0 \ub300\ud558\uc5ec.<\/a><time datetime=\"2026-04-25T05:15:32+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670825\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62759&#038;lang=zh\" aria-label=\"\u6559\u5ba4\u79d2\u8b8a\u96f7\u5c04\u8ff7\u5bae\uff01\u7576\u7c89\u5875\u8207\u9727\u6c23\u9047\u4e0a\u96f7\u5c04\u2014\u2014\u7f8e\u5230\u7a92\u606f\u7684\u300c\u5149\u4e4b\u8db3\u8de1\u300d\u3002\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/12\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-04-24-18.07.54-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62759&#038;lang=zh\">\u6559\u5ba4\u79d2\u8b8a\u96f7\u5c04\u8ff7\u5bae\uff01\u7576\u7c89\u5875\u8207\u9727\u6c23\u9047\u4e0a\u96f7\u5c04\u2014\u2014\u7f8e\u5230\u7a92\u606f\u7684\u300c\u5149\u4e4b\u8db3\u8de1\u300d\u3002<\/a><time datetime=\"2026-04-25T05:14:21+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670825\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=26658\" aria-label=\"\u306a\u305c5A\u304b\u3089\uff1f\u5b9f\u9a13\u3067\u7d0d\u5f97\u3059\u308b\u30a2\u30ca\u30ed\u30b0\u96fb\u6d41\u8a08\u306e\u4f7f\u3044\u65b9\u3068\u30c7\u30b8\u30bf\u30eb\u96fb\u6d41\u8a08\u300c\u30d7\u30c1\u30e1\u30fc\u30bf\u30fc\u300d\u306e\u7d20\u6674\u3089\u3057\u3055\uff01\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/12\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-04-25-4.43.45-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=26658\">\u306a\u305c5A\u304b\u3089\uff1f\u5b9f\u9a13\u3067\u7d0d\u5f97\u3059\u308b\u30a2\u30ca\u30ed\u30b0\u96fb\u6d41\u8a08\u306e\u4f7f\u3044\u65b9\u3068\u30c7\u30b8\u30bf\u30eb\u96fb\u6d41\u8a08\u300c\u30d7\u30c1\u30e1\u30fc\u30bf\u30fc\u300d\u306e\u7d20\u6674\u3089\u3057\u3055\uff01<\/a><time datetime=\"2026-04-25T04:15:10+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670825\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=26826\" aria-label=\"\u6559\u5ba4\u304c\u5149\u306e\u8ff7\u5bae\u306b\uff01\u30ec\u30fc\u30b6\u30fc\u3068\u9ed2\u677f\u6d88\u3057\u30fb\u9727\u304c\u63cf\u304d\u51fa\u3059\u300c\u5149\u306e\u8db3\u8de1\u300d\u304c\u7f8e\u3057\u3059\u304e\u308b\u4ef6\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/12\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-04-24-18.07.54-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=26826\">\u6559\u5ba4\u304c\u5149\u306e\u8ff7\u5bae\u306b\uff01\u30ec\u30fc\u30b6\u30fc\u3068\u9ed2\u677f\u6d88\u3057\u30fb\u9727\u304c\u63cf\u304d\u51fa\u3059\u300c\u5149\u306e\u8db3\u8de1\u300d\u304c\u7f8e\u3057\u3059\u304e\u308b\u4ef6<\/a><time datetime=\"2026-04-25T04:01:39+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670825\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62719&#038;lang=es\" aria-label=\"\u00bfSomos conductores de electricidad? \u00a1Atr\u00e9vete con el incre\u00edble experimento del circuito humano! [Tamesu-kun]\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/03\/3c79d3032be1ac0cb7eb6766ca21a5da-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62719&#038;lang=es\">\u00bfSomos conductores de electricidad? \u00a1Atr\u00e9vete con el incre\u00edble experimento del circuito humano! [Tamesu-kun]<\/a><time datetime=\"2026-04-24T04:32:37+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670824\u65e5<\/time><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=62716&#038;lang=fi\" aria-label=\"Kulkeeko s\u00e4hk\u00f6 ihmiskehon l\u00e4pi? Hypp\u00e4\u00e4 mukaan j\u00e4nnitt\u00e4v\u00e4\u00e4n ihmisvirtapiiri-kokeeseen! [Tamesu-kun]\"><img width=\"150\" height=\"150\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/03\/3c79d3032be1ac0cb7eb6766ca21a5da-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/a><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/phys-edu.net\/wp\/?p=62716&#038;lang=fi\">Kulkeeko s\u00e4hk\u00f6 ihmiskehon l\u00e4pi? Hypp\u00e4\u00e4 mukaan j\u00e4nnitt\u00e4v\u00e4\u00e4n ihmisvirtapiiri-kokeeseen! [Tamesu-kun]<\/a><time datetime=\"2026-04-24T04:32:13+09:00\" class=\"wp-block-latest-posts__post-date\">2026\u5e744\u670824\u65e5<\/time><\/li>\n<\/ul>&nbsp;","protected":false},"excerpt":{"rendered":"<p>I&#8217;m Ken Kuwako, a science trainer. Every day is an experiment. \u3010This Article is also a Podcast!\u3011 Experie [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":48719,"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-51690","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\/2025\/05\/4498209cbf3d5872b78acfe6b1d24db5.jpg","jetpack-related-posts":[{"id":53945,"url":"https:\/\/phys-edu.net\/wp\/?p=53945&lang=en","url_meta":{"origin":51690,"position":0},"title":"The Science of the &#8216;Pop!&#8217;: Making Hydrogen Gas at Home","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u67087\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\/2022\/12\/fedf019bc7e16778461dffc28bc4648e.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/12\/fedf019bc7e16778461dffc28bc4648e.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/12\/fedf019bc7e16778461dffc28bc4648e.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":53869,"url":"https:\/\/phys-edu.net\/wp\/?p=53869&lang=en","url_meta":{"origin":51690,"position":1},"title":"The Pro&#8217;s Guide: Turn Drugstore Peroxide into Pure Oxygen in Minutes (Tips Not Found in Textbooks!)","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u67085\u65e5","format":false,"excerpt":"I'm Ken Kuwako, your Science Trainer! 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