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September 2025

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2025年9月4日 / Last updated : 2025年9月4日 桑子 研 Science

Terror of a 16m Drop, Explained by Science! A Mathematical Look at Splash Mountain: Disneyland Physics

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Did you know you can calculate the speed of Splash Mountain using physics? This article is also available on our radio show! If I were to ask, “Who has ridden Splash Mountain at Tokyo Disneyland?”, almost everyone in the classroom would raise their hand. […]

2025年9月3日 / Last updated : 2025年9月3日 桑子 研 Science

Don’t know where θ goes? Clear it up with a drawing trick! (A story connecting nursing and high school physics on “Force Decomposition”)

I’m Ken Kuwako, a science trainer. Every day is an experiment. Even Nursing Students Struggle?! Let’s Make Physics Fun with Remedial Education! Have you ever heard of remedial education? Simply put, it’s about “supplementing the foundational academic skills needed for university studies.” A lot of students in nursing programs, in particular, struggle with physics, so […]

2025年9月2日 / Last updated : 2025年9月2日 桑子 研 Science

Draw a Face on a Balloon: Making Invisible Forces Visible! A Magical Way to Master Physics’ “Force Arrows”

Have you started high school and are already scratching your head over the basic science courses? Physics, especially, can be a major headache. You’re told, “Draw the forces!” but they’re invisible, so how can you even begin? Many people feel lost. Even if your teacher tells you, “First draw the force of gravity, and then […]

2025年9月2日 / Last updated : 2025年9月2日 桑子 研 Science

The classroom becomes a universe! Making a DIY Cardboard Planetarium Dome

I’m Ken Kuwako, a science trainer. Every day is an experiment. A Classroom Full of Stars! How to Make a DIY Cardboard Planetarium Have you ever made a planetarium for a school festival? This time, I’d like to introduce a project our science club took on: creating a “cardboard planetarium dome.” Last year, our school […]

2025年9月2日 / Last updated : 2025年9月2日 桑子 研 Science

Can you see it? Captured by a weather satellite! The Earth’s secrets hidden in the blank spaces.

I’m Ken Kuwako, a science trainer. Every day is an experiment. 【This article is also available as a radio broadcast!】 This is an infrared cloud image. Do you notice anything strange about it? Even if this is your first time seeing this image, you’ll probably spot a few things that make you say, “Huh?” The […]

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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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