NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Bruce J. Pennino
Date: 2013 Apr 8, 20:11 -0400
By the way, instead of using a "tangent offset" calculation method for a dip equation, I redid the geometric dip more correctly using right triangle geometry and trig, based solely on the equivalent radius of the earth . This way, geometric dip K was calculated to be 1.06 as Frank and others have mentioned. Due to refraction correction and experience, the adopted value is 0.971, or so.
----- Original Message -----From: Frank ReedSent: Sunday, April 07, 2013 7:29 PMSubject: [NavList] Stop and smell the equations
A little advice: slow down... stop and "smell the equations". :)
Know what I mean? You can't just grab one random equation after another and throw it at Excel and assume that means you've understood something. You have to slow down and think about what the equations are saying. What are they for?
The present discussion of dip is spiralling rapidly into the abyss. It's gone from bad to worse. But this can be fixed with some effort. Stop and enjoy the beauty of the math: stop and smell the equations. :)
-FER
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