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The Van de Graaff generator is an electrostatic generator used to accumulate high voltage in a moving belt in a hollow sphere. Invented by American physicist Robert Jemison Van de Graaff in 1929, the potential difference in this generator can reach up to 5 megavolts.

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The Van de Graaff generator is an electrostatic generator used to accumulate high voltage in a moving belt in a hollow sphere. Invented by American physicist Robert Jemison Van de Graaff in 1929, the potential difference in this generator can reach up to 5 megavolts.