Large Transparent Solar Power Crookes Radiometer Sun Light Energy Spinning Vanes Windmill Gift Home

Give your 12-13 year old something to think about... by challenging them with science, then turn the table by asking them why and how!! Great quality product very sensitive to light, works inside on a bright sunny day. Recommended..

This unit is very cool! It replaces a smaller one that has lived on our kitchen windowsill for well over 14 years, until my wife broke it one morning while opening the window curtains. Being much taller than the previous one, I’ve not yet found a safe place to place it where it might not be damaged. It is really nice, and I hope to find a safe place to mount it!

Nice

I gave 2 people this as a gift. and they both really like this Solar Power Crookes Radiometer in their window. it brings a spark of life from the sun into their room. Thumbs up on this. I want to get one for myself now.

The black coating is chipped all over the place. Warned in product description, but still kinda lame for an ornate piece. As it says the thing works like a charm, chipped black coating or no, so its fine. I'm curious why a more robust coating hasn't been found for these.

works great

Quality control is highly erratic. I have bought many and returned several because they don’t spin even in direct sunlight

Wanted one for years - this is the best ive found.

This reminds me of one that I had many years ago but had gotten broke in a move. It won't work with kitchen light...thinks it above that? but it does work in a calm, leisurely fashion in the Dining room light (it's the chandelier type with 5 bulbs). But put it near a window and it really likes to show off.

毎年卒業生にさしあげてます とても好評です

No veo que cumpla su función

Paint from spinning thing was all over inside of glass

くるくるまわる光景が素敵です。