Re: inductance calculations (fwd)

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---------- Forwarded message ----------
Date: Mon, 21 May 2007 15:43:50 -0700
From: Ed Phillips <evp@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: inductance calculations (fwd)

---------- Forwarded message ----------
Date: Mon, 21 May 2007 15:34:58 EDT
From: Mddeming@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: inductance calculations (fwd)

 
Hi Wyatt, Ron, All,
 
IF you are old enough, or have done enough research, there IS a direct  
conversion, as used in early electrical work. Tesla used these terms in CSN and  in 
many of his patents. 
 
AS USED BY TESLA: 1 cm of inductance is 1 nH of inductance. 
AS USED BY TESLA: 1 cm of capacitance is 1.111... pF of capacitance
 
The derivation for this is, I believe, somewhere  in  the list archives.
 
 
Hope this helps,
 
Matt D.
Oldfart & occasional student of electrotrivia."

     It's interesting that Tesla used both in his CSN and seemed to switch back and forth arbitrarily.  Can't remember if the conversion above refers to the esu or the emu system of units.  I have a couple of pre-1900 text books which use both as well as "practical units".  Tesla lived in changing times and in some ways adapted well and in others not so well............

Ed