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

Andrew Christy (
15 May 1995 04:12:25 GMT (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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