Re: Sun-Centered? (was: The Flat Earth?)

Andrew Christy (christy@rschp2.anu.edu.au)
15 May 1995 04:12:25 GMT

grante@reddwarf.rosemount.com (Grant Edwards) writes:
>
>I quite often think of the earth as flat. While navigating cities streets,
>the approximation is quite useful. It makes the geometry simpler to assume
>that streets running north and south are parallel.
>
Doesn't work either here (Canberra, Australia) or in Cambrige, UK. In both
cities, streets that are intuitively parallel turn out not to be
(as a rule in Canberra, they are 45-60 degrees out). In Cambridge, two of
them even meet at a right angle (by the Round Church).

I can only conclude that space shows a very strong local positive curvature
in these cities.

Andy C

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