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*Price and Stocks may change without prior notice
*Packaging of actual item may differ from photo shown
- Electrical items MAY be 110 volts.
- 7 Day Return Policy
- All products are genuine and original
- Cash On Delivery/Cash Upon Pickup Available
Radiometer Features
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Vanes in the Radiometer are alternately dark and light in color
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Vanes transfer heat to each one but not at the same degree
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Lighter vane reflects the rays and the darker vane absorbs the rays
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For ages 8 and above
About Radiometer
Product Description Radiometer From the Manufacturer It's the spear powered by the sun! When light strikes the diamond wings it tranfers heat to each one, but not to the same degree. The light wing reflect the rays and the darker wing absorbs the rays. The stronger the light the more energy there is to heat up the darker side causing the wings to spin faster.
