Re: What's that noise?

[cmgord@ecr.mu.oz.au (Christopher_Martin GORDON)]

: So basically it is the simple theory of electrons flowing, then 'jumping'
: across the line-breaker when it is opening.  Much the same thing when a
: tram is powering over a cut off point - A large arc 'jumping' between the
: contact wire and the overhead.  Comeng trains just make a louder noise
: because there is more voltage.  Have I got it right?

Like thunder and lightening, big noise there.

But (just to stuff everyone up) during the wet season 'up north'
you get lightening with no thunder full on forkes striking only
a few 100 metres away, and then as soon as it starts to rain
the thunder is there (and very loud)


Back to railways...........

--
Chris Gordon
http://www.ecr.mu.oz.au/~cmgord