Physics

High Power Wimshurst Machine

Demonstrating Electrostatic Induction and Spark Discharges

Use: Demonstration experiments on electrostatics, electrostatic induction, charge storage and high voltage in physics lessons

With the High Power Wimshurst Machine, fundamental phenomena of electrostatics can be demonstrated clearly in the classroom. As the two discs rotate in opposite directions, electric charges are generated and accumulated through electrostatic induction.

The generated charges are stored in two Leyden jars, which act as capacitors. When the voltage becomes sufficiently high, a visible and audible spark discharge occurs between the electrodes. This allows students to observe charge separation, charge storage, high voltage and electrical discharges directly.

The machine is operated manually using a hand crank with belt drive and features two smoke-coloured acrylic discs with metal foil sectors. It can also be used as a high-voltage source for additional electrostatics experiments, for example in combination with the Demo Set Electrostatics 50332. Detailed instructions are included.

Technical Data

  • Voltage: approx. 120 kV
  • Spark length: approx. 100 mm at low humidity
  • Disc diameter: 310 mm
  • Design: 2 counter-rotating acrylic discs with metal foil sectors
  • Charge storage: 2 Leyden jars
  • Drive: Hand crank with belt drive
  • Dimensions: 380 × 180 × 430 mm
  • Weight: 3.4 kg
The picture shows an electrostatic device used to conduct experiments in education. It has a rotating disk and two glass bulbs that are used to generate and demonstrate electrical charge.
The picture shows an electrostatic device used to conduct experiments in education. It has a rotating disk and two glass bulbs that are used to generate and demonstrate electrical charge.
The image shows two metallic balls connected by an electric spark. This spark illustrates a physics experiment commonly used in school education to illustrate concepts of electricity and current.

item number 50315

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