I have never seen a really definitive statement about arcs and sparks however I
tend to think of sparks as transient ( as in spark plugs) and arcs as sustained
(as in arc lamps). Does that make sense?

Fred Townsend

"Speakman, Jim" wrote:

> Fellow Listers
>
> At a recent equipment design review, a discussion on arcing and sparking
> indicated a lack of definitive knowledge of the difference between an 'arc'
> and a 'spark'.
>
> Is an 'arc', basically just a long 'spark'.  If so, at what point
> (precisely) does a 'spark' become an 'arc'?
>
> Have I got it all wrong?  Are they 'something else'.
>
> Can anyone enlighten my darkness?
>
> __________________________
> Jim Speakman
> (Design Safety Representative (Southern Sites)
>
> Thales Defence Ltd
> Thales Sensors
> Manor Royal
> Crawley
> West Sussex
> RH10 9PZ
>
> > *     Tel:    +44(0)1293 644911
> > *     Mob:    +44(0)7968 529439
> > *  Fax :      +44(0)1293 644194
> > *    e-mail   jim.speak...@uk.thalesgroup.com
> >
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