Re: very long sparks

• To: tesla-at-pupman-dot-com
• Subject: Re: very long sparks
• From: Mark Finnis <mefinnis-at-medicine.adelaide.edu.au> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Tue, 11 Jan 2000 07:52:12 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

At 07:15 10/01/2000 -0700, Bert Hickman wrote:

>A wee bit skeptical are we... ?  :^)

Actually .... it's my middle name ;-)

... Snip ...

>While it is indeed hard to believe that a 5 MV impulse could generate a
>100 meter spark, there is ample precident that very long sparks can
>propagate under relatively low average applied fields - this includes
>lightning! While the 5 MV discharge had an "average" field of only 500
>volts/cm, it turns out that lightning strikes occur with an observed
>average field stress that may be as low as 100 volts/cm when observed at
>ground level ("Lightning" by Uman).
>
>Sometimes truth IS stranger than fiction...

Which is why belonging to this list is worthwhile !

Cheers

Mark


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Mark Finnis				Hm:  61 8 8431 2889
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