A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: That magic number: 3438
From: Robin Stuart
Date: 2016 Nov 4, 07:46 -0700
And of course
angular size(minutes of arc) = radius of Earth(nautical miles)·length of ship(metres)/distance to ship(metres)
works just as well.
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