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Friction Tube Experiment

SKU PH0203D
15mm dia and 20 cm long tube designed to show that static electricity is produced by friction.

This tube is designed to show that static electricity is produced by friction. When mercury is quickly rolled from one end to the other end of the tube, or by rubbing silk cloth piece, friction between glass and mercury produces static electricity which in turn glows the gas which is filled inside the tube. Length of tube is 20 cm and dia. 15 mm approx.
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