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July 2026

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2026年7月10日 / Last updated : 2026年7月10日 桑子 研 Science

Atoms in the Palm of Your Hand! Unlocking Chemistry Secrets with Water Beads

I’m Ken Kuwako, the Science Trainer. Every day is an experiment. Have You Ever Heard of Aquabeads? Aquabeads are colorful craft beads that stick together with nothing more than water. When you arrange the tiny beads on a special tray, spray them with water, and let them dry, their surfaces soften and fuse together to […]

2026年7月7日 / Last updated : 2026年7月7日 桑子 研 Science

The Quiet Drama of Electric Current: The Science of Capacitor Discharge (A Guide to Sensor-Based Charge & Discharge Experiments)

I’m Ken Kuwako, the Science Trainer. Every day is another experiment. Why Does the Current from a Capacitor Create Such a Beautiful Curve? What if you could actually watch invisible electric current as a graph in real time? That was the idea behind this experiment. This time, I used a large 1F capacitor (rated at […]

2026年7月6日 / Last updated : 2026年7月6日 桑子 研 Science

The Magical White Cloud Born from “Neutralization”: The Surprising Chemistry Between Limewater and Carbon Dioxide

I’m Ken Kuwako, a science communicator. Every day is an experiment! Do you remember blowing into a straw filled with limewater during science class? Watching the clear liquid suddenly turn milky white felt almost like performing a magic trick. But why does simply adding carbon dioxide make the liquid cloudy? The answer is surprisingly interesting. […]

2026年7月5日 / Last updated : 2026年7月5日 桑子 研 Science

From Bucket to Science Lab! Measuring Sound Wavelengths with Your Smartphone (Air Column Resonance Experiment)

I’m Ken Kuwako, a science educator. Every day is an experiment. In this article, I’ll introduce a simple but powerful experiment that explores sound resonance using the iPhone app “AƒG – Audio Function Generator.” Students can actually experience the relationship between wavelength and frequency, then confirm it with calculations. Best of all, the equipment is […]

2026年7月4日 / Last updated : 2026年7月4日 桑子 研 Science

Why Doesn’t Your Stomach Digest Itself? What a 170-Year-Old Accident Revealed (Video: “The Marvel of Human Digestion”)

I’m Ken Kuwako, your science educator. Every day is an experiment. I first learned about this fascinating video, “The Wonders of Human Digestion,” from Mr. Y, and I’ve been showing it to my students every year ever since. It’s simply too good not to share. Have you ever wondered why your stomach doesn’t digest itself […]

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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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