I’m Ken Kuwako, your science educator. Every day is an experiment! Place three colorful transparent sheets inside a clear cube, then gently pour in some water. Suddenly, a tiny cube appears to float in the empty space inside. It looks like magic—but it’s actually a fascinating demonstration of the science of light. What Is a […]

I’m Ken Kuwako, a science trainer. Every day is an experiment. Think sound is invisible? As it turns out, under the right conditions, sound waves can reveal themselves right before your eyes. On a recent visit to the Tsukuba Expo Center, I came across a device that does exactly that — tiny polystyrene beads floating […]

I’m Ken Kuwako, a science trainer. Every day is an experiment. The moment you flip a switch off, the current should drop to zero — or so you’d think. But a coil doesn’t give up that easily. It clings to the current like it has something to prove, sending voltage into a wild, oscillating frenzy. […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! What would you think if someone told you that a piece of aluminum foil could float in midair without using fire or any tricks? It sounds like magic, but it’s actually a real phenomenon you can witness with an ordinary induction cooktop (IH) found […]

I’m Ken Kuwako, the Science Trainer. Every day is an experiment. The moment you flip a switch, electric current starts flowing through the circuit instantly… or does it? It turns out the story isn’t quite that simple. Add just a single coil to the circuit, and the current no longer rushes forward obediently. Instead, it […]