[Lowfer] Capacitor value in centimeters?

[Paul Daulton]

The Leyden jar was the first capacitor studied by physicists in the 
18th and 19th centurys. Google "Leyden" jar and you will find many 
references. the Leyden jar was a thin glass vessel with foil inside and 
out and was used by early experimenters to store electrical charges. 

Maybe there was a standard size for the jars. Plenty of references on 
Google search, particularly a 1911 encyclopedia reference. 

Thats like describing velocity in furlongs per fortnight which was a 
favorite problem of one of my physics instructors. 

Neat thread

Paul k5wms

Quoting John Bruce McCreath <weazle at hurontel.on.ca>:
> Hello Lowfers,
>
> I have a book titled "Handbook of Technical Instructions for Wireless
> Telegraphists" dated 1918. 
> In it, the value of capacitors (condensers) is expressed in 
> centimetres and/or
> jars, both of which
> mean nothing to me.  I did a quick Google search for a conversion formula or
> table, but no luck. 
> Anyone here know how to convert capacitance expressed in centimetres into
> terminology that
> we use today?
>
> 73, J.B., VE3EAR
>
> LowFER Beacon "EAR"
> 188.830 kHz. QRSS30
> EN93dr
>
>
>
>
>
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Paul Daulton K5WMS
beacon WMS 185.302 khz qrss30/slow 24/7
Jacksonville,Ar 72076
em34wu