#C044 - 4" Clear Sphere On Tapered Stem

2 in stock


SKU: C044 Clear Category: Tag:

The radiometer, also known as a light windmill, is a instructive physical object for demonstrating a theory, which was invented by the English physicist Sir William Crooke in 1873. This small physical and technical miracle shows in a simple way how the smallest sun power plant in the world converts light into energy. Depending on the power of the light, a rotation of approximately 2000 revolutions per minute can be reached by the radiometer.

Sphere Diameter..4″

Additional information

Weight 2 lbs
Dimensions 12 × 6 × 6 in


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Shipping charges are added for this item, the web site well give you a price quote and it well be added to the final price. In a effort to keep the price down, I may occasionally take the item out of the factory box and or combine multiple items in a smaller box.

International Shipping

Any address outside the lower 48 US is considered International and we do ship worldwide to most countries, in a effort to control the price, we may repack the item out of the factory box into a smaller box or multiple items into one box, if you do not want this, contact me and let me know, but your shipping might be higher.