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Re: Sextant double reflection: angles halved
From: Richard Toohey
Date: 2021 Feb 15, 18:26 -0500
From: Richard Toohey
Date: 2021 Feb 15, 18:26 -0500
David - I sent my proof a bit ago, but damn, yours is about 10 times simpler! Love it!
On Mon, Feb 15, 2021 at 6:02 PM David Pike <NoReply_DavidPike@fer3.com> wrote:
I can never remember how to start on this, but how about this for today’s approach?
In the diagram below, the starlight is bent through Theta = 2v-2u = 2(v-u)
In triangle ABC, 90-v+90+u+phi=180 or Phi=v-u, so Theta=2Phi. DaveP
File:
.JPG "Click to enlarge.")
