I’m Ken Kuwako, your Science Trainer. Every day is an experiment! Have you ever reached for a doorknob on a dry winter day and felt that sudden, painful “ZAP!”? That tiny spark is actually a phenomenon called “electrical discharge,” where electricity jumps across the gap between your finger and the knob. What’s truly astonishing is […]

I’m Ken Kuwako, your Science Trainer. Every Day is an Experiment. Last time, we showed you an experiment using a plastic umbrella sleeve to demonstrate “light scattering,” which is why the sky is blue and sunsets are red. Wouldn’t you be surprised to know that the dazzling colors of that sunset and the internet light […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Why does an iron nail rust, but a gold ring keeps its shine forever? How can a simple combination of metals in a battery generate electricity? The secret lies in the metals’ strong desire to become “Ions!“—in other words, their “Tendency to Form Ions.” […]

I’m Ken Kuwako, your science trainer. Every day is an experiment. On a cold winter day, you might hear a crackling sound or see a spark when you take off your sweater, or notice your hair floating up after rubbing it with a plastic ruler. Everyone has experienced this strange phenomenon: static electricity. Usually, static […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Hey everyone, here’s a circuit riddle for you! If you connect a battery and a motor with wires, the motor will obviously spin, right? But what happens if you introduce a component called a “capacitor” into the middle of that circuit? Will the motor […]