NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: 7 ways to determine longitude
From: Frank Reed CT
Date: 2003 Dec 24, 18:06 EST
From: Frank Reed CT
Date: 2003 Dec 24, 18:06 EST
"Just to nitpick, method 1 [by chronometers], and, later, method 3 [electric telegraph] (substituting radio for telegraph), also are used at sea."
Same name for the technique, yes, but if you were to read Chauvenet on chronometers, you would get an account of the methods that astronomers and surveyors would apply --not practical navigators at sea. Also, almost everything in the section on the electric telegraph becomes irrelevant for a navigator at sea as soon as you're dealing with signals that propagate at c (radio signals). It's all still interesting reading of course.
Frank E. Reed
[X] Mystic, Connecticut
[ ] Chicago, Illinois
Same name for the technique, yes, but if you were to read Chauvenet on chronometers, you would get an account of the methods that astronomers and surveyors would apply --not practical navigators at sea. Also, almost everything in the section on the electric telegraph becomes irrelevant for a navigator at sea as soon as you're dealing with signals that propagate at c (radio signals). It's all still interesting reading of course.
Frank E. Reed
[X] Mystic, Connecticut
[ ] Chicago, Illinois
