> Is the . dot a multiplication, what I would expect to be '*'?

Yes, I used "." for std basic multiplication. (No vectors harmed in
the writing of that formula).

The less keen would build a system and derive K overall from measurement :;=
-)

> It's been too long since studying or using any semiconductor theory. =A0I=
s
> q =3D electron charge a constant?

A far more profound question than may at first be obvious :-).

A: Only if the fine structure constant is constant and maybe not then.
If not, the sky is falling and I'm off to see the king. (Does anyone
want to buy an acorn?).

There is ongoing uncertainty about the constancy of the F.S.C. and
whether it is spatially isotropic across the universe. But, for we
mere mortals, it can be assumed that all of the current physical
constants are so. At least close enough to constant across ranges of
time and space liable to be encountered in terrestial applications.

FSC =3D alpha =3D 2.Pi.q^2 / (CP)

    q =3D electron charge
    C =3D light speed !!!!!!!!!!!!
    P =3D Planck's constant

http://en.wikipedia.org/wiki/Cosmological_principle

They were at it in 1962 :-)
"The significance of spatial isotropy."
http://prola.aps.org/abstract/PR/v127/i2/p629_1                 <- Ref
http://astrophysics.fic.uni.lodz.pl/100yrs/pdf/07/026.pdf       <-paper

http://www.ebtx.com/ntx/ntx215.htm   <- Danger Will Robinson

" ...  using the Bekenstein-Sandvik-Barrow-Magueijo (BSBM) theory. ...
dark energy ..."
Must be good, then.
http://arxiv.org/abs/astro-ph/0401631

On Feynman (long ago) & Webb & King (2010)  on FSC
NB FSB <> FSM but it may sometimes be hard to tell :-).
http://www.economist.com/node/16930866


> I know the rest are, except for the
> ideality factor, which I would hope are in the spec sheet or can be
> calculated empirically.

I doubt if many spec sheets cite non a non-ideality factor, alas.


                    Russell

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