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Path: utzoo!watmath!watnot!watdcsu!sgcpal
From: sgcpal@watdcsu.UUCP (P.A.ul Layman [EE-Device Physics])
Newsgroups: net.sci
Subject: Re: Choice of voltage?
Message-ID: <2142@watdcsu.UUCP>
Date: Thu, 6-Mar-86 11:55:01 EST
Article-I.D.: watdcsu.2142
Posted: Thu Mar  6 11:55:01 1986
Date-Received: Sat, 8-Mar-86 18:37:57 EST
References: <drutx.107> <232@ccnysci.UUCP>
Reply-To: sgcpal@watdcsu.UUCP (P.A.ul Layman [EE-Device Physics])
Organization: U of Waterloo, Ontario
Lines: 11
Summary: 

In article <232@ccnysci.UUCP> sukenick@ccnysci.UUCP (George ) writes:
>Negative with respect to what? If its negative to prevent
>some degradation (oxidation,perhaps?)of the copper,
> then what is the ground wire composed of?
>
>Alright, enough questions here! how about some answers! *)

The answer was part of your question.  Why do you think they call
it *ground*. (i.e. dirt, water, maybe some PCB's etc.)

PAul