The device consists of a ball terminal to attract electric charge, generous supply of tiny polystyrene balls, transparent cage on a sturdy base.
The tiny balls inside our transparent cage bounce wildly near a Van de Graaff generator due to the electrostatic charge. 
They can also demonstrate Coulomb’s Law and illustrate a method of smoke control. 
Product Weight:0.75kg
Overall Size:¢95x310mm

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Voltas Hailstorm

SKU: SL-610