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J1-27: QUALITATIVE EXISTENCE OF ELECTROSTATIC FORC 9 years 6 months ago #1385

  • zzfixk21
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ID Code: J1-27
Purpose: Demonstrate the existence of electrostatic forces.
Description: The Van de Graaff is first turned on, charging the dome, and the ground sphere by induction; sparks between them indicate the existence of high voltages. The Van de Graaff is then turned off, and conducting aluminum foil cylinders hanging from strings are inserted between the dome and the ground sphere. The cylinders move back and forth between the dome and the ground sphere, demonstrating the existence of electrostatic forces.
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