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November 2025

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2025年11月12日 / Last updated : 2025年11月12日 桑子 研 Science

Magnet Tricks: Making Dandelions Bloom with the Invisible Hand of Science

I’m Kuwako Ken, your Science Trainer. Every day is an experiment. Sprinkle glittering powder onto a “lonely picture of just a stem,” and instantly, a dandelion bursts into full bloom! Sprinkle powder onto a girl’s empty hand, and poof—a vibrant pom-pom appears! It looks like magic, but of course, there’s a trick. Today, I’m introducing […]

2025年11月12日 / Last updated : 2025年11月24日 桑子 研 Science

The Cloud Maker: The Hidden Science of Your Soda Saver

Hi, I’m Ken Kuwako, your Science Trainer. Every day is an experiment. That fizzy carbonated drink after a sports practice or on a hot day is simply the best! But everyone has had that disappointing experience: you put an opened bottle back in the fridge, take a sip the next day, and think, “…Ugh. It’s […]

2025年11月12日 / Last updated : 2025年11月12日 桑子 研 Science

The Sunset’s Hidden Rainbow: Proof That Green and Yellow Skies Truly Exist

I’m Kuwako Ken, your Science Trainer. Every day is an experiment. “Why is the sky blue during the day and red in the evening?” This is a beautiful mystery of nature, often discussed in science classes. The answer lies in a phenomenon called “light scattering.” Sunlight is actually a mixture of various colors (wavelengths) of […]

2025年11月12日 / Last updated : 2025年11月12日 桑子 研 Science

From Feline Grace to Kendama Skill: The Hidden Physics of Impact Absorption

I’m Kuwako Ken, your Science Trainer. Every day is an experiment. The Physics of a Cat’s Landing Suddenly, have you ever witnessed a cat’s incredibly graceful movement? A cat jumping down from a height lands silently and beautifully, almost without a sound. Can you imagine that the secret to this fluid motion holds the ultimate […]

2025年11月11日 / Last updated : 2025年11月11日 桑子 研 Science

Mount Prometheus: The Hidden Geology That Turns DisneySea’s Icon Into a Science Lesson

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. It’s the icon of Tokyo DisneySea: the majestic “Mount Prometheus.” You ride attractions inside it, or you simply gaze at it as part of a beautiful landscape… but do you think of it as “just a big decoration”? In fact, if you look closely […]

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運営者: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。理科教師として勤務する傍ら、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
I want to share the fun, wonder, and excitement of science with as many people as possible. In addition to my work as a science teacher, I also work as a "Science Trainer," providing scientific supervision for and appearing on TV programs, holding hands-on science workshops, and writing science books.

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