Electroscope, Pith Ball.
Charge a friction rod and bring the rod close to the hanging balls. The balls diverge and collapse depending on their electrical charge. Includes: plastic base, 3.5" square, metal rode with hook, pack of 6 conductive balsa-wood balls with strings and instructions.
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Charge a friction rod and bring the rod close to the hanging balls. The balls diverge and collapse depending on their electrical charge. Includes: plastic base, 3.5" square, metal rode with hook, pack of 6 conductive balsa-wood balls with strings and instructions.
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