NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: The Nautical Mile and the arc minute
From: Henry Halboth
Date: 2015 Jun 6, 19:46 -0400
From: Henry Halboth
Date: 2015 Jun 6, 19:46 -0400
Francis,
Some time ago I wrote a piece for NavList on the Time Sight. You should be able to find this in the archives - if not, let me know and I will provide you with a copy.
Henry
On Sat, Jun 6, 2015 at 2:41 PM, Francis Upchurch <NoReply_Upchurch@fer3.com> wrote:
Thanks Henry,
I never understood it from that perspective. Thanks very much. I will look into this. I have recently been interested in “Chords” in another context.(the Kelly Graphical method for lunar clearance and I have managed to find a Chord angle device.) Wonderful idea, goes back to the ancient Greeks! It sounds to my simple, non mathematical brain, that the theory of all this was well known back to the 17th century and I wonder why it took so long for Sumner etc al to re-discover it?
Oh well . History full of that sort of thing, including in my field of medicine.
Thanks again.
Francis
NavList
What is NavList?
Get a NavList ID Code
A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.
Retrieve a NavList ID Code
Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
Email Settings
