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February 2026

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2026年2月28日 / Last updated : 2026年2月28日 桑子 研 Science

Why Do Soap Bubbles Rush Toward Static Electricity—While Paper Butterflies Flee? The Shocking Science Explained!

I am Ken Kuwako, your science trainer. Every day is an experiment! Bubbles drifting through the air usually float aimlessly, following the whims of the wind and gravity. But what do you think would happen if we introduced a certain “invisible force”? Yes, I’m talking about static electricity—that same force that makes your hair stand […]

2026年2月26日 / Last updated : 2026年2月26日 桑子 研 Science

The Closet Guardian! The Surprising Science Hidden in the “White Beads” of Moisture Absorbers (Calcium Chloride)

I am Ken Kuwako, your Science Trainer. Every day is an experiment! During those humid seasons or when dealing with musty closets, “Dehumidifiers” are our best friends. Have you ever stopped to wonder about the “white granules” sitting inside that container? Believe it or not, these tiny grains are packed with amazing science that protects […]

2026年2月25日 / Last updated : 2026年2月25日 桑子 研 Science

Never Miss Your Target! The Strange Law That Guarantees a Hit—The Monkey Hunting Game Explained

I am Science Trainer Ken Kuwako. For me, every day is an experiment. Imagine a slightly timid monkey perched high in a tree. He is so sensitive to loud noises that the moment he hears a “Bang!”, he let go of the branch and starts to fall. Now, imagine you are aiming a ball at […]

2026年2月24日 / Last updated : 2026年2月24日 桑子 研 Science

The Coin That Won’t Come Out—Solved in a Split Second with Physics! The Coin Escape Puzzle

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! “I might never see that coin again…” I recently encountered a mysterious puzzle that left me feeling that exact sense of desperation. At first glance, it looks like a simple enough contraption, but it actually hides a fundamental principle of physics in plain sight. […]

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 […]

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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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