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*To*: tesla-at-pupman-dot-com*Subject*: Re: Keeping up with the theory (was is Corum and Corumforbidden topic?)*From*: "Tesla list" <tesla-at-pupman-dot-com>*Date*: Mon, 06 May 2002 07:08:50 -0600*Resent-Date*: Mon, 6 May 2002 07:11:59 -0600*Resent-From*: tesla-at-pupman-dot-com*Resent-Message-ID*: <dCy8yC.A.fKC.SEo18-at-poodle>*Resent-Sender*: tesla-request-at-pupman-dot-com

Original poster: "Ray von Postel by way of Terry Fritz <twftesla-at-qwest-dot-net>" <vonpostel-at-prodigy-dot-net> Ed: Thanks for the information on the availability of programs.....even expensive ones. My comments were based on the method of computation using empirical equations rather than those that are general in nature. Why use approximations if there are better methods? Rob: Are you saying that the equations currently being used for distributed capacitance yield accurate and precise results and are based on Maxwell's equations? If that is the case, then why bother with Wheeler et al? No one, so far, has convinced me that a project to come up with a general equation for the calculation of parasitic capacitance of a solenoid would not be worth while. The limitation on precision and accuracy should be the ability to readily measure dimensions and not on the math. Any such equation, set of equations, or procedure should be usable by any one on the list who has a computer. Why any one building a coil would want to do so is beyond me. It seems to be a mountain that is there and has not been climbed. This seems to be getting a bit far from coiling, I would be glad to continue this discussion off list. Best Ray Tesla list wrote: > > Original poster: "Ed Phillips by way of Terry Fritz > <mailto:twftesla-at-qwest-dot-net><twftesla-at-qwest-dot-net>" <mailto:evp-at-pacbell-dot-net><evp-at-pacbell-dot-net> > >> >> I am intrigued by your statement regarding Maxwell's equations. Do you >> think they are amenable to numerical analysis? That should make them >> programmable on the average desk top. Can I volunteer you for the project >> or would you prefer working on the spark gap? Me? I don't have the skills. >> Best Ray > > There are many different commercial programs which let you put in all > of the boundary conditions and then solve for whatever you want - electric > fields, magnetic fields, current flows, etc. Some are pretty expensive. I > suspect there are some free ones too, but have never looked for them. There > are other modern analytical tools which accomplish similar results. I'm not > aware of any that can handle such non-linear programs as spark gap breakdown, > but there may well be. Ed

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