I’m Ken Kuwako, your Science Trainer. Every day is an experiment! Electricity powers our modern lives, but did you know that the “alternating current” (AC) humming through your home is actually a beautiful symphony of overlapping waves? The key to unlocking the complex maze of RLC circuits found in smartphones and appliances lies hidden within […]

Hi, I’m Ken Kuwako, your Science Trainer. Life is one big experiment! 【This article is also available on my radio channel!】 The Surprising Side of Sakura Let’s take a quick look at the “profile” of the cherry blossom tree, or Sakura. Scientifically, it belongs to the Rosaceae (Rose) family and is a deciduous broad-leaved tree. […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Our lives are powered by smartphones and home appliances, and inside almost every one of them is a tiny component called a “capacitor.” Its job is simple yet vital: storing and releasing electricity. But since we can’t see electricity with the naked eye, it’s […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! Have you ever been to a high-tech arcade and played those “motion-sensing” games? You throw a ball at the screen, and the characters react instantly—it feels like pure magic. You might find yourself wondering, “What kind of incredibly complex sensors are they using?” But […]

I’m Ken Kuwako, Science Trainer. Every day is an experiment. “How can a heavy machine start spinning just by switching on the electricity?” This simple question marked a giant leap for modern civilization: the birth of the motor. Today, our lives are unthinkable without them. They power everything from your smartphone’s vibration and the family […]