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IW6DFW > TECH 01.06.06 10:00l 44 Lines 1338 Bytes #999 (0) @ WW
BID : 23650_IW6DFW
Read: GUEST DL1LCA
Subj: Re: Capacitor dielectric (VK2ZRG)
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Sent: 060601/0937 @:IQ6TC.#AP.IMAR.ITA.EU $:23650_IW6DFW Sally 4.0.220
Date: gio, 01 giu 2006 09.37.45
From: IW6DFW (Maurizio)
To: TECH@WW
Subject: Re: Capacitor dielectric (VK2ZRG)
From: IW6DFW@IQ6TC.#AP.IMAR.ITA.EU
VK3ABK's original message...
> So, maybe the ARRL HB is correct, as long as you look at the
> right formula for the right capacitor formation.
Reading my physics books about e.m.f. I'm sure that a direct correspondence between
dielectric costant and capacitance there is with certainty only when the place where is the
field (dielectric medium) is homogeneous, so in mathematical words, permittivity can be
treated as a constant then brings out from the integral operator.
If these conditions doesn't occurs, it's necessary to use the linearity property of the
integral operator, so split the formula into a run of sums of a number of addendums
equal to the number of interphaces between inhomogeneous materials. In this way no
direct proportionality is insured.
I hope I've been clear.
73 Ciao a tutti , Maurizio,
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Timed Tuesday 11 January 2005 16:26 gmt
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