OT, was Ptolemy in Re: VMs: Traditional Astrology and the Flat Earth

[elvogt@xxxxxxxxxxx]

Zitat von Pamela Richards <spirlhelix@xxxxxxxxx>:

> Ptolemy on the Shape of the Earth, from the Almagest,
> Book I, Ch. 4.:
> 
> "Now, that also the earth taken as a whole is sensibly
> spherical, we could most likely think out in this way.
>  For again it is possible to see that the sun and moon
> and the other stars do not rise and set at the same
> time for every observer on the earth, but always
> earlier for those living towards the orient and later
> for those living towards the occident...And since the
> differences in the hours is found to be proportional
> to the distances between the places, one would
> reasonably suppose the surface of the earth
> spherical...

That is pretty cool. How on Earth did he measure that...?

   Elmar, seriously stumped


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