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TechBrands Model Radiometer Crookes

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TechBrands Model Radiometer Crookes

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$80.95

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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

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