[ARC5] More Condenser/Capacitor Trivia

[Richard Knoppow]

    This sounds like a joke but may not be.  I looked at both the 1938 
and 1931 editions of the Admiralty Handbook of Wireless.  The 1931 
edition still shows "jar" as being a current term in the British Navy 
and justifies it as convenient for calculating wavelength.  It does not 
mentions values other than jar, which is about 1111 pF but for Farads 
shows the usual division, i.e. micro, nano, pico, etc., so they could 
have been applied to the jar. However, the jar is a more convenient size 
than the Farad for ordinary use. I suppose the Farad could be described 
as "the large, economy, size jar"  on your dealer's shelf now.
     I just found a 1925 edition of this book on Amazon and bought it. 
We will see what it says, if anyone is still interested.

On 2/22/2016 12:59 PM, Kenneth G. Gordon wrote:
> On 22 Feb 2016 at 19:55, Bruce Long via ARC5 wrote:
>
>> which suggests the units of micro-jars, nano-jars and pico-jars  although keeping
>> with the old style terminology perhaps the latter would be more accuraately
>> refered to as a mmJ   ie  micro-micro-jar
> Ha ha! IMHO, that is perfect! I think I'll bring that up at our next radio club meeting in order to
> bring the "new-bies" a little more up to speed on our history.
>
> Neato!
>
>   1 jar = 1/900th of a microfarad or 0.09 microfarads....if I have my decimal points in the
> correct places....
>
> I can hardly wait! :-)
>
> Ken W7EKB
>
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL

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