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Mounting Hardware
The coil spring ensures smooth
This unit incorporates battery charging (BC) 1
1×115 ×62mm
Crookes Radiometer COMING SOON Mounting HardwareA 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. Features: One piece glass body with metal vanes Use as simple desk
