Many Science Centres and Science Museums use Van de Graaff generators for static electricity demonstrations. I would appreciate comments on the safety of these machines, particularly when used for demos such as standing hair on-end where visitors are charged using the generator (under supervision, of course!). Comments, either on or off the list, will be very much appreciated. Thanks in advance. Glen Moore Science Centre and Planetarium Wollongong, NSW 2522, AUSTRALIA Email: [log in to unmask] Fax: 61 42 836665 WWW: http://wits.uow.edu.au/science_centre/index.html