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2026年2月9日 / Last updated : 2026年2月9日 桑子 研 Science

Learn How Engines Work with a Shocking “Pop!” — The Secret of Alcohol Explosion Experiments (First Law of Thermodynamics)

I am Ken Kuwako, your Science Trainer. Every day is an experiment. Back to Special Page The “Pop!” That Opens the Door to Science: A Safe At-Home Thermodynamics Experiment 【This article is also available on Radio!】 There is something instinctively thrilling about seeing something launch right before your eyes. Have you ever looked at a […]

2026年2月8日 / Last updated : 2026年2月8日 桑子 研 Science

What Happens When Acid Meets Base? Create the Crystals of Neutralization — A Visible Chemistry Drama (HCl & NaOH Experiment)

Hi, I’m Ken Kuwako, your Science Trainer. To me, every day is an experiment! Pop quiz: what happens when “sour” meets “bitter”—two completely opposite personalities? In the world of science, we witness a fascinating drama called neutralization, where substances with intense traits hold hands and cancel each other out. Today, I’ll introduce you to an […]

2026年2月7日 / Last updated : 2026年2月7日 桑子 研 Science

What Happens If You Jump on a 300 km/h Bullet Train? The Half Super Ball Experiment Explains It!

Hi there! I’m Ken Kuwako, your Science Trainer. To me, every day is one big experiment. 【Listen to this story on the radio!】 “If I jump inside a bullet train traveling at 300 km/h, am I going to slam into the back wall?” Have you ever had that thought? It’s a little scary to imagine, […]

2026年2月6日 / Last updated : 2026年2月6日 桑子 研 Science

A Squeeze of Lemon Is a Chemistry Experiment! Your Dining Table Turns into a Science Lab (Neutralization)

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. “Itadakimasu!” As you press your hands together to give thanks for your meal, did you know that your dining table has just transformed into a chemistry classroom? Think about squeezing a fresh lemon or sudachi citrus over grilled fish, or savoring the perfectly seasoned […]

2026年2月5日 / Last updated : 2026年2月5日 桑子 研 Science

From Circles to Waves? Exploring the Mysterious Beauty of Sine Waves with Scratch (Physics & Math Learning Tool)

I am Ken Kuwako, a Science Trainer. Every day is an experiment. Circles and Waves. When you hear these two words, what shapes do you imagine? One might be the looping silhouette of a Ferris wheel, while the other is a rhythmic wall of water rolling across the ocean. At first glance, they seem like […]

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運営:桑子研(くわこ けん)
科学の楽しさや不思議、感動を多くの人に届けていきたい。サイエンストレーナーとしてテレビ番組の科学監修・出演、実験教室、科学本執筆なども行っています。

Author: Ken Kuwako
My mission is to share the joy, wonder, and excitement of science with as many people as possible. As a Science Trainer, I stay busy supervising and appearing on science-themed TV programs, hosting hands-on experiment workshops, and authoring science books.

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