NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: HR-1 working re-creation and new questions
From: Robert Bernecky
Date: 2013 Feb 7, 17:20 -0800
From: Robert Bernecky
Date: 2013 Feb 7, 17:20 -0800
surely we don't need a cannon (calculus) to shoot a fly. The Greeks would do it this way
2 pi r = C of the earth
add 1" to C and expect an increase in r of x
2 pi (r+x) = C + 1"
2 pi r + 2pi x = C + 1"
the 2 pi r cancels the C and we have
2 pi x = 1"
x = 1"/2 pi
x is roughly 7/44 of an inch using the simple approximation pi = 22/7
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