NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Advancing a position circle.
From: Peter Fogg
Date: 2006 Jun 18, 11:42 +1000
From: Peter Fogg
Date: 2006 Jun 18, 11:42 +1000
I wrote earlier: "...the courses as drawn are not due north (particularly the outer ones), but isn't that due to lines of longitude converging towards the pole? The displaced circle hasn't been distorted at all.." However, if each point of the radii is moved north by the same distance then the new circles formed from those points will certainly be deformed. And, when approaching the pole, since by definition north finishes there, I can even envisage the J curve. But again, isn't all of this simply due to converging lines of longitude? Is that what all this is about? "One of the greatest pains to human nature is the pain of a new idea." British economist Walter Bagehot (1826-1877)
