Thunder...I like it.  Like Thor's hammer, Mjollnar.  Good name for a
vanagon!.
Michael in San Antonio
91GL AT 'Gringo'
73 Beetle

On Tue, Jan 5, 2010 at 8:34 PM, David Beierl <dbeierl@attglobal.net> wrote:

> At 09:32 PM 1/5/2010, Scott Daniel - Turbovans wrote:
>
>> I can't explain why there is a sound, but I have experienced it many
>> times.
>>
>
> Scott, it's the same as lightning, in miniature.  You have a
> high-energy plasma flow (an arc, in other words) that heats the air
> very hot locally; then it cools when the arc collapses.  What you're
> hearing is the thunder.
>
> Yours,
> David
>