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CHOKING HAZARD -- Small parts. Not for children under 3 yrs.
I also have 3 radiometers, and one of them hardly turns at all. The other two work just fine. I looked at it from a point of view of balance, and or resistance but I don't know why... Read morePublished 11 days ago by Tondeleo
Great item, good price, fast delivery. Would recommend this seller.Published 1 month ago by Amazon Customer
By its very nature, this has to be "frail" or it won't work, right? However, I would have liked something besides the cheap plastic base.
This radiometer is just fun to have. It's sits in my kitchen window and that's where it will stay! It turns faster if it's in direct sunlight, but I don't want to put it outside... Read morePublished 1 month ago by R. Muller
I love this Radiometer it goes crazy in the sunlight and under the flashlight so try it.Published 1 month ago by melvin Coplin
Another classic toy, and this one has a lot of science behind it. It does exactly what it should do, and if you're a geek, research "Crooke's Radiometer", some interesting... Read morePublished 1 month ago by W. Ezell
The exact same one I bought 20 years ago (and it finally lost its vacuum). Works perfectly. I love the endless spinning in my kitchen windowsill.Published 2 months ago by Mark A Spencer