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Re: home grown plasma globe



Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>

Found this site http://www.waterfountains.com/acrylic__spheres.htm . Still waiting on a reply for prices. Wonder if the acrylic won't melt at atmospheric pressure tho (high power needed, esp for 36"+ spheres or biggest I can afford (5-foot? lol). They also have huge steel hollow spheres to 79" for a huge vdg, at least by homegrown standards.

Mike




----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx> To: <tesla@xxxxxxxxxx> Sent: Saturday, October 15, 2005 5:49 PM Subject: Re: home grown plasma globe


Original poster: William Beaty <billb@xxxxxxxxxx>

On Tue, 11 Oct 2005, Tesla list wrote:

> Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>
> out of my price range for a few years. Hence the flask version, even
> tho just the 72L flask is nearly $1000. Kinda sucks everything on the
> biggish side and glass is expensive. Probably should learn to blow
my own lol.

How about a glass aquarium, or a glass case?  Just use the 1-atmosphere
trick.  No sphere needed.

Or if you must use a sphere, have a plexiglas house make you a vacuformed
hemisphere.  We had a handful of these made for $100 each back in 1990.
40" wide.  I'd expect that a single one today would cost two or three
hundred bucks.


(((((((((((((((((( ( ( ( ( (O) ) ) ) ) ))))))))))))))))))) William J. Beaty SCIENCE HOBBYIST website billb at amasci com http://amasci.com EE/programmer/sci-exhibits amateur science, hobby projects, sci fair Seattle, WA 206-789-0775 unusual phenomena, tesla coils, weird sci