Date: Wed, 27 Mar 2002 22:01:50 +1000

Author: David Eric Bailey

Subject: Re: Safety of Van de Graaff Generators


I have worked for years using a breakdown potential for air (dry?) of
15KV/cm to estimate the potential of my VDGs. and I certainly cannot recall
my source for this figure . Karl has quoted a value of 8KV/cm which is
somewhat(!) lower.

> Perhaps it can be judged by arc length of the discharge in air,
>>given that its about 8KV/cm of discharge.
Can someone supply a confirmation of either/neither figure or source where a
reasonable value for the voltage can be obtained ? Ta.