[OSM-talk] Potlatch 1.3

John Smith deltafoxtrot256 at gmail.com
Tue Nov 24 07:50:31 GMT 2009


2009/11/24 Frederik Ramm <frederik at remote.org>:
> Maybe "~= 100km", but "== 60 nm". One nautical mile is exactly one minute of

Because they estimated the circumference to 36,000km, but it's over 40,000km

> arc. Say again which system was naturally suited for all things geo?

1 nautical mile is exactly 1852m

Actual circumference of the earth: 40,075.02 KM (equatorial) 40,007.86
KM (meridional) 40,041.47 KM (mean)

1.852*60*360 = 40003.2

Yet another close approximation.




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