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Bell Experiment Apparatus (Bell in Bell Jar)

Model PHY-0039
For demonstrating that sound cannot be transmitted in a vacuum. It consists of a 2 litre bell jar with a rubber stopper fitted with binding posts and connectors from which an electric bell is suspended. It operates on 3 to 6 volts, using either battery or a transformer. To be used with Air Pump (Vacuum Pump with Aluminium Plate)

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