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December 2025

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2025年12月16日 / Last updated : 2025年12月16日 桑子 研 Science

Magical Art Born from Physics — Lose Yourself in the Beauty of the Pendulum Wave

Have You Heard of the Pendulum Wave? Have you ever seen “art” woven by the laws of physics? If you think math and science are stuffy and boring, this video might just completely change your mind. For now, just watch this incredible and mesmerizing video without overthinking it. What did you think? Ever since I […]

2025年12月15日 / Last updated : 2025年12月15日 桑子 研 Science

Kitchen Science Magic! When a Stirrer Becomes a Wand — The Mysterious Lens That Flips Up and Down

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Do you have a glass swizzle stick or a clear pen lying around in your kitchen or on your desk? What looks like a simple rod might actually be a magic wand that flips the world upside down. When we learn about how lenses […]

2025年12月14日 / Last updated : 2025年12月14日 桑子 研 Science

“Wait—Here?!” Discovering the Bird Heart’s Surprising Pump Power Through Real Dissection

This is Ken Kuwako, Science Trainer. Every day is an experiment. How do birds, soaring high above the clouds, manage to generate the immense energy needed for such vigorous flight? The secret lies hidden within their small bodies: a “super-efficient engine.” This engine is the heart, a marvel of engineering crafted as intricately as, or […]

2025年12月13日 / Last updated : 2025年12月13日 桑子 研 Science

See the Hidden Shapes of Sound! Exploring Resonance with a Tablet and Water (Air Column Resonance Experiment)

Hello, this is Ken Kuwako, your Science Trainer. Where every day is an experiment. “Sound” is invisible to the naked eye. But wouldn’t you feel a spark of excitement if you could capture those invisible waves perfectly using just math and experiments? Today, I’m introducing a lesson on “Air Column Resonance.” We’ll combine modern tablet […]

2025年12月13日 / Last updated : 2025年12月13日 桑子 研 Science

The Invisible Truth: How to See the Path of Light with Chalk Dust and a Spray Bottle

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Have you ever actually seen the “essence” of light? In movies and anime, you often see brilliant laser beams cutting through the darkness. However, the strange truth is that in the real world, light itself is invisible to our eyes unless it hits something. […]

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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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