1. It crashed in the Van de graaff crater.

2. We're coming up to the Van de graaff crater.

3. Tandem Van de Graaff, once the world's largest electrostatic accelerator.

4. "Marcel" de Graaff (Dutch: ; born 7 April 1962) is a Dutch politician.

5. De Graaff commuted the sentence to two years, and in actuality Sukarno was released on 15 December 19

6. In 1872, Righi's electrometer was developed and was one of the first antecedents of the Van de Graaff generator.

7. 17 Static electricity was the first form discovered and investigated,[www.Sentencedict.com] and the electrostatic generator is still used even in modern devices such as the Van de Graaff generator or MHD generators.