Re: SCIENCE FAIR BOTTLE CAPACITOR ExPERIMENT HELP!!!

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jonathan Peakall" <jpeakall-at-madlabs.info> 

The only bottle cap I have had that actually failed was a green champagne
bottle. It now arcs right through the bottle, but it doesn't let liquid out.
This cap was not submerged, it had tin foil wrapped around it and sat in a
tray. It did last for quite a while, and none of the other 11 have failed.

Jonathan

www.madlabs.info


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, November 21, 2003 7:06 AM
Subject: Re: SCIENCE FAIR BOTTLE CAPACITOR ExPERIMENT HELP!!!


 > Original poster: Karl L <karl-at-coolbluesky-dot-com>
 >
 > On Thu November 20 2003 7:28 pm, Tesla list wrote:
 >  > Original poster: "Lau, Gary" <gary.lau-at-hp-dot-com>
 >
 >  > I suspect that Corona bottles are favored only because of the
 >  > appropriate name.  I've not heard of anyone doing any kind of actual
 >  > comparison to other bottle brands or colors.  If the person entering
 >  > the science fair is a minor, I wouldn't advocate using beer bottles;
 >  > glass iced tea bottles will surely work just as well.
 >
 > I actually tested many types of bottles, both glass and plastic.  The
 > Corona beer bottles absolutely worked the best.  I never even considered
 > the name connection.  The bottles are a heavy-walled construction,
 > narrower than most beer bottles, and have a very thin neck.  This
 > combination allowed for a higher density per given space, and I
 > experienced no failures whatsoever.
 >  >
 >  >  >If you are on a super-tight budget - a 2 liter soda bottle either
 >  >  > wrapped in foil, or immersed in NaCl will also make an awesome cap.
 >  >  > The corona seems to appear right at the solution line, and can
 >  >  > ultimately  destroy the cap.unless an  oil layer is floated.
 >  >
 >  > Plastic soda bottles should not be used for Tesla coil caps.  The
 >  > dielectric losses in the plastic are many times higher than glass.
 >  >
 > However, an experimenter on a tight buget can utilize a plastic soda
 > bottle cap, and get fairly good results.  I tested many types of bottles,
 > and surprisingly, certain bottled water containers made excellent caps.
 > I never had one "fail", but corona leakage at the electrolyte level would
 > often degrade their performance.
 >
 >  >  >Part of the fun and educational experience is in designing your own
 >  >  > cap, and testing :"by fire"  You should have no problem in coming up
 >  >  > with a hypothosis of some sort.
 >
 > See my post on rolled transparancy caps
 >  >
 >  > Absolutely agree.
 >  >
 >  > Gary Lau
 >  > MA, USA
 >
 >
 >