Why Fan Blades Are Invisible When Spinning Fast

As the temperature rises, fans, coolers, and air conditioners become essential companions in our daily lives. There’s a certain comfort in sitting beneath a fan after a long, hot day; the cool breeze offers a refreshing relief. However, if you’ve ever observed a fan in motion, you might have noticed that as the speed increases, the blades become harder to see. What causes this phenomenon? Let’s explore the science behind it. When a fan rotates at high speeds, the blades move so quickly that our eyes struggle to perceive them clearly. This occurrence is a type of optical illusion known … Read more