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$Brian Villmoare: Refraction formula incorporating the elevation of the observer$

Re: Kepler and the invention of logarithms
From: Martin Whittle
Date: 2025 Sep 5, 19:20 +0100

Thank you, I enjoyed viewing.

On Fri, Sep 5, 2025, 15:36 NavList Community <NavList@navlist.net> wrote:

Kepler and the invention of logarithms
From: Gary LaPook
Date: 2025 Sep 4, 20:53 -0700
I stumbled upon this very interesting history of the invvention off logarithms that I think we navigators will find interesting.
https://www.youtube.com/watch?v=lhdmMqSmg5g

$Brian Villmoare: Refraction formula incorporating the elevation of the observer$

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