Van de Graaff generator
- noun (written as van de Graaff generator)an electrostatic generator that produces electrical discharges at extremely high voltages, used in particle accelerators and for testing electrical insulators
- An electrostatic generator in which a rapidly moving insulating belt collects electric charges, then discharges them inside a hollow metal sphere. Potentials of several million volts may be generated in this manner. Also called belt generator.
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