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2025年11月29日 / Last updated : 2025年11月29日 桑子 研 Science

The Physics of the Perfect Pull: Mastering the Tablecloth Trick with Inertia and Speed

I’m Science Trainer Ken Kuwako. Every day is an experiment. The “Tablecloth Pull” is always a massive hit during physics classes. It’s breathtaking to watch someone whip a cloth out from under a set of dishes, leaving them sitting there as if by magic. It’s a trick that makes everyone hold their breath, thinking, “If […]

2025年11月28日 / Last updated : 2025年11月28日 桑子 研 Science

Now You See It, Now You Don’t! Feel Newton’s First Law with the Disappearing Coin Trick!

I’m Ken Kuwako, your Science Trainer. Every Day is an Experiment. What image comes to mind when you hear the phrase, “The Law of Inertia”? Many people would probably answer, “That feeling when a bus slams on the brakes and you lurch forward!” The textbook definition is often difficult to grasp, stating that “an object […]

2025年11月27日 / Last updated : 2025年11月27日 桑子 研 Science

The Pine Tree: A Dinosaur-Era Living Textbook in Your Schoolyard

Ken Kuwako, Science Trainer. Every day is an experiment. In schoolyards, parks, shrine grounds, and along the coast, the pine tree (Matsu) is an ubiquitous part of the Japanese landscape. Its distinctive long, needle-like leaves, rugged trunk, and powerfully spreading branches possess a dignified presence, much like a traditional Japanese painting. However, this pine is […]

2025年11月26日 / Last updated : 2025年11月25日 桑子 研 Science

The Physics of Fables: Graphing the Tortoise and the Hare’s Hidden Science

I’m Ken Kuwako, your Science Trainer. Every Day is an Experiment. The fable of “The Tortoise and the Hare” is one we all heard as children—a race between the quick-footed hare and the slow-but-steady tortoise. But did you know that when viewed through a “scientific lens,” this story becomes an excellent teaching tool for understanding […]

2025年11月25日 / Last updated : 2025年11月25日 桑子 研 Science

Wild Weeds Are a Treasure Trove! Discover the Secrets of Monocots and “Closed Flowers” with Wall Barley

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! Do you ever pay attention to the “weeds” growing along the paths you walk every day? It’s a huge missed opportunity to just walk past them, dismissing them as “just grass”! In reality, the plants at your feet are hiding incredible “survival strategies” they’ve […]

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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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