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 […]

I’m Ken Kuwako, the Science Trainer. Every day is an experiment. Fifteen pendulums sway, ripple like waves, twist into mesmerizing patterns, and then somehow return to their original positions as if nothing happened. The moment I saw this exhibit at the Science Museum, I couldn’t help but stop and watch. Take a look at the […]