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November 2025

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2025年11月24日 / Last updated : 2025年11月24日 桑子 研 Science

The Science of Fizz: How Your Soda Pump Proves You Can Make Heat from Air.

Hi, I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Carbonated drinks are delicious any time, but haven’t you been disappointed when leftover soda goes flat and turns into “just sweet water”? That’s where the gadget we’re introducing today, the “Soda Fresh,” comes in handy. In class, we affectionately call it “Shuposhupo-kun” (the […]

2025年11月23日 / Last updated : 2025年11月23日 桑子 研 Science

From Hot Pot to Hot Science: Turn Your Electric Grill Pan into a Laboratory’s Constant Temperature Bath

I’m Kuwako Ken, your Science Trainer. Every Day is an Experiment. It’s an ethereal sight, almost like snow falling inside a test tube. Have you already tried the “Ammonium Chloride Recrystallization” experiment that I introduced previously? The way the sparkling crystals dance and fall is so beautiful you can lose yourself watching it. This experiment […]

2025年11月23日 / Last updated : 2025年11月23日 桑子 研 Science

Why Do Plants Grow Hair? A 3-Day Radish Root Hair Observation That Reveals the Secret!

Hi, I’m Ken Kuwako, your Science Trainer! Every day is an experiment. A tiny, dry seed. At first glance, it looks like a sleeping pebble, but hidden deep inside is a burst of life’s explosive energy. This time, we’re zooming in on the “germination” of the Radish (specifically, the ‘Hatsukadaikon’ or ’20-day radish’), a topic […]

2025年11月22日 / Last updated : 2025年11月22日 桑子 研 Science

Inside the Peanut! A Fun Dissection Exploring Seed Structure (Non-Endospermic Seeds)

Hello, I’m Ken Kuwako, your science trainer. Every day is an experiment! 【This article is also available on radio!】 Exploring the Secret Life of a Peanut Seed You grab a bag of peanuts from the supermarket shelf, shell them, and enjoy that satisfying crunch – a perfectly normal scene, right? But within each tiny peanut […]

2025年11月21日 / Last updated : 2025年11月21日 桑子 研 Science

Time vs. Distance: How Physics Redefines Speed

I’m Ken Kuwako, your science trainer. Every day is an experiment. The Olympics vs. The Lab: Is Our Concept of Speed Upside Down? When you watch sports on TV, what moments make you exclaim, “Wow, that’s fast!”? Whether it’s the 100-meter dash, a marathon, or a freestyle swimming race, we watch athletes compete based on […]

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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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