Re: theory(?) for long sparks
From: Antonio Carlos M. de Queiroz[SMTP:acmq-at-compuland-dot-com.br]
Sent: Friday, December 05, 1997 10:36 PM
To: Tesla List
Subject: Re: theory(?) for long sparks
> Tried a 6 ft long plastic tube once with a small coil. The streamers
> actually melted pathways into the plastic due to their higher capacitive
> energy. It does work well with glass tubes though. We have only tube 10
> feet long we can hook up to coils and then pump a very slight below
> atmospheric vacuum (around 6000 microns works nice) and the streamers are
> very long and quite spectacular. We use a 6 inch dia tube and have used
> some up to 10 inch dia for the experiments.
Certainly sparks al low pressure are longer than at normal pressure, but
the tube that I mentioned was just a support to hold a small insulated metal
ball close to one main high-voltage terminal.
Antonio Carlos M. de Queiroz