Wimshurst Machine
The classic electrostatic generator experiment
The Wimshurst Machine is an electrical generator with a distinctive appearance.
With its two large contra-rotating discs mounted in a vertical plane and a spark gap within two metal spheres, the Wimshurst machine is an historical electrostatic machine for generating high voltages.
Constructed according to the classical model, this generator is safe to use and robustly built.
Structural elements are in cast metal, with all insulating components constracted from high dielectric strength plastic.
Particular attention has been paid to the collection combs and supports so as to prevent damage to the radial aluminium strips.
experiment: Electrical sparks - how to generate high potential differences between conductors
The generator requires simply mechanical power to run the discs. The output is a constant current and the spark energy can be increased by adding a Leyden jar.
High voltages break down air and produce a spark. The permativity of air is 10.000 volts/cm, and when this is exceeded we can create sparks of lightning.
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