van de graaff generator
 
van de graaff generator
my favorite among my machine
collection is the van de graaff
generator

despite the use of kitchen
bowls with very sharp
edges it can produce sparks
of around an inch or more

type:
self-excited (no hv source)

lower roller:
teflon

upper roller:
polyamide

belt:
rubber, 20mm (3/4in) wide

upper terminal:
kitchen bowls, approximate
diameter 130mm (5in)