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2026年2月22日 / Last updated : 2026年2月22日 桑子 研 Science

Create a Rainbow! The Science Behind Double Rainbows, Refraction, and Reflection Painting the Sky

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. 【This post is also available on the radio!】 “Look, a rainbow!” There is something truly magical about that seven-colored arch appearing suddenly in the sky after a rainstorm. Most of us have probably stopped in our tracks at some point to admire one. Just […]

2026年2月21日 / Last updated : 2026年2月21日 桑子 研 Science

What Happens When Waves Collide? Explore Superposition with a DIY Scratch Simulator!

I am Ken Kuwako, a Science Trainer. Every day is an experiment! From the crashing waves at the beach to the soothing melodies in your ears, and even the invisible signals connecting your smartphone—our world is absolutely filled with “waves,” both seen and unseen. Have you ever wondered what happens when two waves traveling from […]

2026年2月19日 / Last updated : 2026年2月19日 桑子 研 Science

Two BeeSpies, One Trick! A Mind-Blowing Experiment to Visualize Motion Equations

I’m Ken Kuwako, your science trainer. Every day is an experiment! Did you know that every movement around us is actually governed by a single, elegant law? From the resistance you feel when pushing a heavy box to the thrilling acceleration of a bike speeding down a hill—these experiences were unlocked through the language of […]

2026年2月18日 / Last updated : 2026年2月18日 桑子 研 Science

Why Do Waves Bend? Master the Tough Huygens’ Principle with a Magical Simulation (Scratch)

Hi, I’m Ken Kuwako, your Science Trainer. To me, every day is an experiment! For many physics students, the biggest hurdle in uncovering the true nature of “waves” is often Huygens’ Principle. If you’ve ever felt that reading the textbook leaves you more confused than enlightened, you’re not alone. The problem is that the essence […]

2026年2月17日 / Last updated : 2026年2月17日 桑子 研 Science

No Right Answer, Just Curiosity! What a “Mystery Box” Teaches Us About the True Nature of Science

I am Ken Kuwako, your Science Trainer. Every day is an experiment. 【This article is also available on our radio show!】 Imagine a box sitting right in front of you that is impossible to open. If someone asked you to figure out exactly what was inside, what would you do? Our world is actually full […]

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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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