From: Kenneth Whistler (kenw@sybase.com)
Date: Mon Mar 10 2003 - 20:54:38 EST
Not to disagree publicly with Michael or Mark on this, but
in the interests of accuracy, I should point out that if the
rest mass of the Unicode 4.0 publication is assumed to be exactly
4.1 kg (which then would, indeed, also be the case on our
moon, or even a Jovian moon), and ignoring any relativistic
corrections for relative motion -- since it is unlikely that
anyone will be reading the standard while it is moving at
a significant fraction of the speed of light -- then we can
calculate the weight as being *approximately* 9.05 pounds
(avoirdupois) [or 10.99 troy pounds].
However, since the gravitational constant varies both by
latitude and elevation, to be more precise, one must
also apply the latitude correction:
g = 978,049 (1 + 0.0052884 sin 2theta - 0.0000059 sinē 2theta) milligals
(where theta is latitude in degrees)
and the free-air correction:
dR = ~0.31 milligals/m > sea level
and then recalculate the weight, accordingly, depending on where
one is standing (or sitting in a comfortable arm chair, perhaps)
on the surface of the earth.
Of course, further weight corrections need to be applied if reading
the standard *below* sea level or in a deep cave.
--Ken
>
> > In the interests of internationalization, I suppose I should point
> > out that the weight of the Unicode 4.0 book, while 9 Lbs in the US,
> > will be 4.1 kg everywhere else in the world.
>
> In the interests of precision:
>
> - The weight would be 9 lb anywhere on the earth.
> - The *mass* would be 4.1 kg, also anywhere on the earth, as well as on the
> moon or in outerspace.
>
> Mark
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