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Experience this sphere powered by the sun! The vanes in the Radiometer are alternately dark and light in color. When the light strikes these vanes, it transfers heat to each one - but not at the same degree. The lighter vane reflects the rays and the darker vane absorbs the rays. The stronger the light, the more energy there is causing the vanes to spin faster.
Shipping and handling
Ships to
United States
Return policy
Item must be returned within:
7 Days
Refund will be given as:
Money Back
Return policy details:
The buyer has 7 days to return the item (the buyer pays shipping fees). The item will be refunded.
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