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Article #603Re: Jacob's Ladders (was Re: What are those things called...)
From: SCOTT I CHASE
Date: Mon, 03 Aug 1992 18:32
Date: Mon, 03 Aug 1992 18:32
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In article <1992Aug03.024735.9267@norfolk.vak12ed.edu>, fculpepp@norfolk.vak12ed.edu (Fred W. Culpepper) writes... > Jacob's Ladder will not operate in the normal fashion >when the two rods are in a horizontal plane. The arc does >depend upon the rising heat of the arc. This can be >demonstrated with a source of compressed air (Please! from a >safe distance). If a jet of air is blown toward the arc, it >can be made to stand still or even go back down. If the air >pressure is high enough it will even "blow-out" the arc and it >will reform at the base. I don't know. This doesn't sound very convincing. All you have demonstrated is that if you apply an opposing force to the plasma channel that you can get the spark to stand still. You haven't shown whether the original force on the plasma was gravitational (hot air rises) or electromagnetic (v x B on the current). I have always assumed that it was the hot air that did it. But I am no longer sure. Someone with a Jacob's Ladder should just tip it over and see if it still works. -Scott -------------------- Scott I. Chase "The question seems to be of such a character SICHASE@CSA2.LBL.GOV that if I should come to life after my death and some mathematician were to tell me that it had been definitely settled, I think I would immediately drop dead again." - Vandiver
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Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!rpi!usc!elroy.jpl.nasa.gov!ames!agate!dog.ee.lbl.gov!csa2.lbl.gov!sichase From: sichase@csa2.lbl.gov (SCOTT I CHASE) Newsgroups: sci.physics Subject: Re: Jacob's Ladders (was Re: What are those things called...) Date: 3 Aug 92 18:32:03 GMT Organization: Lawrence Berkeley Laboratory - Berkeley, CA, USA Lines: 26 Distribution: na Message-ID: <25163@dog.ee.lbl.gov> References: <76673@ut-emx.uucp> <1992Aug03.024735.9267@norfolk.vak12ed.edu> Reply-To: sichase@csa2.lbl.gov NNTP-Posting-Host: 128.3.254.197 News-Software: VAX/VMS VNEWS 1.3-4