I’m Ken Kuwako, the Science Trainer. Every day is an experiment. Did You Know That Current and Voltage Can Actually Fall Out of Step? Have you ever imagined that the electricity flowing from a wall outlet might have voltage and current that aren’t perfectly synchronized? We use electricity every day without giving it much thought, […]

I’m Ken Kuwako, a science trainer. Every day is an experiment. The units “becquerel” and “sievert” are used to describe radiation levels. Many people have heard these names before, but surprisingly few can clearly explain the difference between them. At the Tsukuba Expo Center in Ibaraki Prefecture, I found an exhibition poster that explained this […]

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. […]