Russell,
Do you have a reference for 10^1 and 10^2 units being forbidden?  I
have the NIST Special Pub 811 (US) booklet in front of me and cannot
find any such reference.

Here is the list of terms that are "unacceptable":
erg, dyne, poise, stokes, gauss, oersted, maxwell, stilb, phot, fermi,
metric carat, torr, standard atmosphere, kilogram force, micron,
calorie,
x unit, stere, gamma, gamma (mass), gamma (volume).

These are "temporarily accepted for use":
nautical mile, knot, angstrom, are, hectare, barn, bar, gal, curie,
roentgen, rad, rem.

How many of you know how many yoctoFarads there are in one yottaFarad?

 - Nick -

Russell McMahon wrote:
>
> >I've not yet EVER seen milliFarads.
> >BillW
>
> Which is an EXCELLENT reason to use correct prefixes - ie so that when you
> DO meet milliFarads you know what mF means.
>
> Electronics Australia magazine use mF for laaaarge filter capacitors in some
> circuits - 10,000 microFarad on up and I have seen it used in a few other
> places but can't think where at present. I personally would never use mF if
> only because it is so rare that it invites disaster.
>
> While we're on the correctness kick - ALL SI units MUST be in multiples or
> sub multiples of 10^3.
> ie horrendous measures such as cm are forbidden.
>
> Angstrom is similarly almost forbidden except that, as it does not imply its
> multiplier (or its major unit) in its name it is not liable to confuse.
> However, use of centimetre will bring disaster on one's head sooner or
> later.
>
>       Russell McMahon
> _____________________________
>
> >From another world - www.easttimor.com
>
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>
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