Re: Capacitor terminology

[herbgottlieb@juno.com (Herbert H. Gottlieb)]

 brian whatcott <inet@intellisys.net> writes:
Alex wrote:
> > Question - Why was mmf used instead of pf.
> > -
> > Since I am older than Palmer, I will answer.
> > pico had not been invented yet.

> Thought Alex might be amused by this:
>
> Capacitance:..."The farad is too large a unit for
> radio or electrical work; hence the microfarad...
> and the micromicrofarad...are commonly used."
>
> Picofarad: "Obsolete term for micromicrofarad."
>
> Electronics Dictionary, Cooke & Markus, McGraw-Hill, 1945

Also...in the second edition of the International Dictionary of
Physics  and Electronics:

"FARAD. A unit of capacitance, abreviation f or fd. The farad is 
the capacitance of a capacitor (or condenser) which acquires
a charge of one coulomb when a steady potential difference of one 
volt is maintained across its terminals. the microfarad (10^-6 f) and
the micromicrofarad (pico farad) 10^-12 f) are used as units of 
capacitance much more  than the farad.

Herb Gottlieb from New York City
(Where people in our streets do not know a farad from a ferret)

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