2026年9月30日 / Last updated : 2026年9月30日 桑子 研 Science

[The Right-Hand Screw Rule] Are Magnets Really Just “Moving Electricity”?! Discover the Wonders of Electromagnetism in Everyday Life

Ken Kuwako, Science Trainer. Every day is an experiment. The Magnetic Field Made by Electric Current: Uncovering the Link Between Electricity and Magnetism Did you ever play with a magnet and iron sand at the sandbox as a kid? Chances are that mysterious pull got you pretty excited. And what about rubbing a plastic pencil […]
2026年9月29日 / Last updated : 2026年9月29日 桑子 研 Science

We Crashed a Dynamics Cart into a Target! What the Graphs Reveal About the Secret of “Speed Squared” (A Kinetic Energy Experiment)

“If your speed doubles, how much harder is the crash?” When car accidents make the news, “excessive speed” is often blamed. That’s because even a small increase in speed makes the impact far worse than you’d expect. The secret behind it is something familiar from physics class: kinetic energy. So what does kinetic energy depend […]
2026年9月26日 / Last updated : 2026年9月26日 桑子 研 Science

Say Goodbye to the Electric Swing! Discover Fleming’s Left-Hand Rule with Just One Sheet of Aluminum Foil (The Force on a Current in a Magnetic Field)

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Every time I do this experiment, I can’t help but say, “Wow!” There’s electric current that we can’t see, and there’s a magnetic field that we can’t see either. Yet when these two “invisible things” meet, something amazing happens: a real force appears. And […]
2026年9月23日 / Last updated : 2026年9月23日 桑子 研 Science

The Mystery of 1kg and the Magic of Bearings — Why the New Dynamics Cart Glides So Smoothly (Narika Dynamics Cart F-1)

Soy Ken Kuwako, Science Trainer. Cada día es un experimento. ¿Te sorprendería saber que un fenómeno tan sencillo como «moverse» puede esconder una física sorprendentemente profunda? Esta vez, en la escuela hemos comprado varias unidades del carro de dinámica F-1 de NARIKA. A primera vista, no parece más que un pequeño carro que rueda, pero […]
2026年9月22日 / Last updated : 2026年9月22日 桑子 研 Science

Why Does Your Body Spin the Opposite Way? Unlocking the Physics Mystery with a Spinning Chair Experiment (Conservation of Angular Momentum)

I’m Ken Kuwako, a Science Trainer. Every day is an experiment. A Fascinating Physics Phenomenon You Can Experience Just by Sitting on a Swivel Chair If you have a swivel chair at home, there’s a fun experiment I’d like you to try. Stand on the chair and swing both arms around in the direction of […]