In 1929, Van de Graaff developed his first generator with help from Nicholas Burke (producing 80,000 volts) at Princeton University; by 1931, he had constructed a much larger generator, capable of generating 7 million volts.
Van de Graaff developed his first generator with help from Nicholas Burke (producing 80,000 volts) at Princeton University. This was in 1929. He had constructed a much larger generator. This was by 1931. This was capable of generating 7 million volts.