Date: Thu Feb 15 20:00:32 2007

Author: Richard Heckathorn

Subject: Re: Van de Graaffs


Along the same line, can one wrap the lower Teflon
pulley with 'metalic tape' and the upper metal
roller with Teflon tape and make the top negative?
Mine is an old Physics First generator?


Helping teachers who facilitate, motivating
students who learn.
Dick Heckathorn 14665 Pawnee Trail Middleburg
Hts, OH 44130 440-826-0834
Adjunct Physics Teacher - Baldwin Wallace College
Physics is learning how to communicate with ones
environment so that it will talk back.

-----Original Message-----
[] On Behalf Of
John Welch
Sent: Thursday, February 15, 2007 4:13 PM
Subject: Re: [tap-l] Van de Graaffs

Since my earlier post ended up without a subject,
I'll try asking this

Has anyone tried replacing the cloth covered metal
roller in the base of
a Winsco VDG and/or reversed the rollers to get a
positive charged
ball? I'd like to try but it doesn't look trivial,
so any tips would be