“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 […]

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 […]

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 […]

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 […]

I’m Ken Kuwako, a science trainer. Every day is an experiment. Have you ever seen two mirrors facing each other in a hair salon or a fitting room? When you stand between them, your reflection seems to stretch endlessly into the distance, getting smaller and smaller. It’s a fascinating sight—but did you know that this […]