Decimal() instead of float?

Robert Kern robert.kern at
Sat Nov 18 00:59:34 CET 2006

Fredrik Lundh wrote:
> Terry Reedy wrote:
>> This is far more accurate than any measured latitude could be.
> you're saying that we don't measure geographical positions on an atomic 
> scale? ;-)
> (it's too late for serious calculations, but I'd guess we're talking 
> Ångströms here, right?)

The meter was originally defined to be 1e-7 of the distance between the equator
and the North pole, so 1 degree of latitude is roughly 1e7 m/90 ~ 1e5 m. 1e-16 *
1e5 = 1e-11, 1/10th of an Ångström.

Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
 that is made terrible by our own mad attempt to interpret it as though it had
 an underlying truth."
  -- Umberto Eco

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