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2026年3月25日 / Last updated : 2026年3月25日 桑子 研 Science

Recreate the Cosmos on Your Desktop! Discover the Secrets of Venus’s Phases with a Sphero Mini

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! Have you ever gazed up at the moon and wondered, “Why does its shape change every single night?” It feels like a deep cosmic mystery, but the truth is, you can recreate that secret right in your own living room. Today, I used a […]

2026年3月24日 / Last updated : 2026年3月24日 桑子 研 Science

Rub Your Hands—Do They Really Get Warmer? The Science of Friction and Heat Revealed with a Mini Thermal Camera

I am Ken Kuwako, your Science Trainer. Every day is an experiment! Have you ever rubbed your hands together and blown a warm breath on them on a freezing winter morning? “My hands feel warmer, but am I actually generating heat?” Let’s look at this simple curiosity through the lens of science. Today, we are […]

2026年3月23日 / Last updated : 2026年3月23日 桑子 研 Science

What on Earth Is It Called “Dog’s Balls”!? The Tiny Blue Flower Veronica persica and Its Shocking Survival Strategy [Viewer Discretion Advised!?]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! 【This article is also available on Radio!】 Tiny blue flowers scattered at your feet, looking just like a handful of sapphires. Have you ever noticed these charming little blossoms while taking a spring stroll? Today, I’d like to introduce you to the Persian Speedwell […]

2026年3月22日 / Last updated : 2026年3月22日 桑子 研 Science

Feel the Principle of Work in Action! Master Movable Pulleys with a Simple Paperclip Experiment

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! 【This article is also available on my radio show!】 Ever tried the “movable pulley” experiment in science class? In this classic lab, we compare two scenarios: lifting a load to the same height with and without a movable pulley. We measure the “pulling force” […]

2026年3月21日 / Last updated : 2026年3月21日 桑子 研 Science

Wait… You Weren’t Eating the Fruit!? The Surprising Truth Hidden in Strawberries and Apples

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! If I asked you, “Which part of a strawberry are you actually eating?” most of you would probably point to that sweet, juicy red part. But what if I told you that, from a botanical perspective, that part isn’t actually the fruit at all? […]

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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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