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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Dip uncertainty
From: Frank Reed CT
Date: 2004 Dec 8, 15:55 EST
From: Frank Reed CT
Date: 2004 Dec 8, 15:55 EST
Alex, you wrote:
"Maybe. The problem is whether it is possible to
predict refraction precisely if the temperature
(presure, humidity etc. what else?) profiles
are known. Then the problem splits into two:
to do such prediction mathematically, and to see
how these profiles may vary. Both parts seem to be
solvable."
predict refraction precisely if the temperature
(presure, humidity etc. what else?) profiles
are known. Then the problem splits into two:
to do such prediction mathematically, and to see
how these profiles may vary. Both parts seem to be
solvable."
The physics of refraction in air is straight-forward. Creating density
profiles is also no problem. Integrating the equations numerically is no
problem. But it's not science... UNLESS someone can produce a reasonable set of
observational data to compare against.
Frank R
[ ] Mystic, Connecticut
[X] Chicago, Illinois
[ ] Mystic, Connecticut
[X] Chicago, Illinois
