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2025年10月9日 / Last updated : 2025年10月9日 桑子 研 Science

The 5 Minute Magic Blackboard Trick: Perfect Diagrams with a Projector (No More Chalk Stress!)

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Look at those precise, beautiful curves appearing on the blackboard—curves too perfect to be drawn with chalk. Doesn’t it look like magic? This is actually a simple trick using a projector, a technique called “Inverted Black and White Projection.” Today, I’ll explain how this […]

2025年10月9日 / Last updated : 2025年10月9日 桑子 研 Science

Teacups to Space Stations: The Secret Science of Spinning

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! Have you ever been on a spinning ride at an amusement park, like the teacups, or a roundabout at a playground, and felt that weird sensation of being pulled strongly outwards? What exactly is the identity of that force that makes you want to […]

2025年10月9日 / Last updated : 2025年10月9日 桑子 研 Science

Boiling Point Power: The Stunning Science Behind the Self-Inflating Bag

Hi, I’m Ken Kuwako, your Science Trainer. Every day is an experiment! Have you ever heard of the “Magic Bag”? It’s a mysterious bag that spontaneously inflates when you place it in hot water—without you doing anything else! The truth is, this isn’t magic at all; it’s a display of pure science. The secret, the […]

2025年10月8日 / Last updated : 2025年10月8日 桑子 研 Science

Physics in the Park: Finding the Hidden Math in a Water Fountain

This is Ken Kuwako, the Science Trainer. Every day is an experiment! A walk in the park might seem ordinary. But if you stop and look at it through the eyes of a scientist, it transforms into a laboratory full of wonder and discovery. Take, for example, the water flowing from a drinking fountain. Would […]

2025年10月8日 / Last updated : 2025年10月8日 桑子 研 Science

The Desk-Lifting Trick: How Invisible Air Can Lift a Cow (Seriously!)

I’m Ken Kuwako, a Science Trainer, and every day is an experiment! “Air” surrounds us everywhere. It’s such an obvious, everyday presence that we rarely stop to think about its weight or force. But what if this invisible air held enough power to effortlessly lift a heavy school desk? Today, I’m going to introduce you […]

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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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