クルックス放射計 透明

The way the vanes start spinning immediately when direct sunlight hits them is genuinely mesmerizing. I’ve been using it as a centerpiece on my desk, and the glass construction is much sturdier than I anticipated. It’s a perfect conversation starter that actually teaches you about light energy.

Once you set this on a sunny windowsill, watching the black and white vanes spin is oddly hypnotic. The glass bulb is completely clear, giving you a perfect view of the internal mechanism at work.

The sunlight hitting the vanes makes them spin so smoothly, it’s genuinely mesmerizing to watch. I’ve had it on my desk for a week and still catch myself just staring at the rotation.