NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Refraction
From: Robert Eno
Date: 2007 Dec 11, 19:24 -0500
From: Robert Eno
Date: 2007 Dec 11, 19:24 -0500
Nicolas wrote (clipped) In the Dutch magazine Cornelis Douwes no. 165, Siebren van der Werf has written an article on sun's observations on Nova Zembla........The sun only disappeared when its altitude was already -51.6 arc minutes! This is a common occurrence in the polar regions where the sun is often visible even after it has "officially" set. This is, so I have read, due to pronunced refreaction caused by super cold temperatures. I have seen this phenomenon in the high arctic in places where the sun is not supposed to be visible for that time of year. Robert --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
