Crookes Radiometer GG2108 59.95 In stock
A beautiful desk gadget or serious educational toy.
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A beautiful desk gadget or serious educational toy, the Crooke's Radiometer demonstrates that light has energy, and will turn its vanes even when illuminated by a torch. Despite many people thinking that the motion is caused by the impact of photons on the vanes, the Radiometer in fact operates as a heat engine, driven by the different temperatures of the black and silver vanes.
- One piece glass body with metal vanes
- Use as simple desk ornament
- Great for physics demonstrations