A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David C
Date: 2017 Aug 13, 22:34 -0700
This morning I saw an excellent rainbow. It was bright and a complete semicircle. It occurred to me that if I calculated the position of the of the sun and measured altitude of the top of the arch with a bubble sextant I could use the physics of rainbows to determine my position.
Then I had doubts. I looked up the wikipedia article on rainbows and became thoroughly confused.
Can a circle of position, or even a position, be determined from observation of a rainbow?