The Cavendish experiment: Model and actual apparatus to show.

Cavendish Experiment: The measurement of 'G'. Actual Leybold Gravitation Torsion Apparatus, designed by Schurholz. 35 cm. high. Mechanical Mock-up: Large masses are 9 cm in diameter. Small masses are 3 cm. They are suspended on wire 85 cm. long, along with a mirror. note: please allow several minutes for an effect to be observed
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Demo Diagram: 

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