Re: Ozone levels

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

Hi Devon,

At 07:17 PM 12/3/2004, you wrote:
> Thanks for everyone's inputs.  So the concensus seems that if
> anything, I must have a pretty well ventilated room.
>
> I had the idea of enclosing the coil inside a plexiglas case to
> protect from electric shock to the viewers, but as well, I think
> it would be enough to contain any gasses produced.

Ozone and NOx gasses from the sparks will attack the plastic, weaken it and 
turn it brown:

http://www.ttr.com/model13c.html

Bill's big gap here literally filled with brown gasses!!

Maybe tempered glass would be better.  Bill's wonderful coil here may give 
you ideas too:

http://www.ttr.com/its_model9.html

http://www.ttr.com/Fry-coil.htm

http://www.ttr.com/gpo_2.htm


> Any thoughts on this?  From what I can tell, it should still work the same.
>
> Does a tesla coil need air to discharge?  I also thought of filling the
> case with argon or some inert gas.  I also thought that this might
> affect the amount of sparks produced because it probably wouldn't
> be as conductive.

The arcs will be about 5X longer in argon!!  Nitrogen would be the best 
choice there I think.  But just air should be fine.  The problem with the 
fancy gasses is that they all do odd things to the spark behavior.  Arcs 
travel about 5X longer in argon.

Cheers,

        Terry


> Devon.
>
> ----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Friday, December 03, 2004 7:36 PM
> Subject: Re: Ozone levels