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RADIOMETER | 
 enlarge | Brand: American Science & Surplus
Category: Home Improvement
Buy New: $9.98
New (6) from $9.98
Rating:  5 reviews
Sales Rank: 707
Media: Misc.
MPN: 0100
UPC: 706762801007
EAN: 0706762801007
ASIN: B001AYSAC0
Availability: Usually ships in 4-5 business days
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| Features:
| • | Radiometer Another oldie but goodie. 5" high evacuated clear glass stand 3" in diameter at the top. A four bladed vane is balanced on a needle inside the sphere. Because opposite surfaces of the vanes are black and white, incident radiant energy is absorbed or reflected to a different degree. The result is a spinning vane. The brighter the light, the faster it spins. Simple, but compelling. Brief explanatory instruction sheet included. |
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| Editorial Reviews:
Product Description
Radiometer Another oldie but goodie. 5" high evacuated clear glass stand 3" in diameter at the top. A four bladed vane is balanced on a needle inside the sphere. Because opposite surfaces of the vanes are black and white, incident radiant energy is absorbed or reflected to a different degree. The result is a spinning vane. The brighter the light, the faster it spins. Simple, but compelling. Brief explanatory instruction sheet included.
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| Customer Reviews:
 Not work in low light January 4, 2009
It does not work under a 20w desk lamp and fluorescent lights. But it's pretty busy under my 60w desk lamp.
 Childhood Memories June 1, 2008
Very cool! Brings back memories from my childhood visits to the science exhibitions at the Pomona Fair in Los Angeles. It operates well even in low light conditions. Great quality for the price!
Boring January 18, 2008
3 out of 6 found this review helpful
I purchased this item as a christmas present. It does work but gets old quickly. This would be a good item for a teacher with many students but if you think that your children would like it you're most likely mistaken. It's good for about two minutes of fun but that's all.
A really cool gizmo January 1, 2008
5 out of 6 found this review helpful
A radiometer doesn't do anything useful, but it's really cool. You set it in the light and it spins. That's all. My cousin had one when I was a kid and I was always jealous. It struck me a fun stocking stuffer for my son who is an engineering student. It was a real hit. He immediately set about determining what kinds of light worked best: sunlight, incandescent, fluorescent, flashlight, candle light, heat from a blow dryer. I guess I'm going to have to get myself another one when he goes back to college next week.
A must for any kitchen window sill April 27, 2007
7 out of 10 found this review helpful
This is a windmill that runs on light. As ling as it is sunny the vanes will spin. A truely intreaguing piece of scientific equipment.
I broke mine and missed it so much I had to search for another.
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