; From: Woody Sullivan
> Subject: RE: sunset/sunrise times
> To: sund...@rrz.uni-koeln.de
> Received: Sunday, October 18, 2009, 3:45 AM
>
> RE: sunset/sunrise times
> Tom & Thibaud et al.:
>
>
> An
> interesting consequence of the time of sunrise/set varying
-Original Message-
From: Woody Sullivan
To: sund...@rrz.uni-koeln.de
Sent: Sun, Oct 18, 2009 11:45 am
Subject: RE: sunset/sunrise times
Tom & Thibaud et al.:
An
interesting consequence of the time of sunrise/set varying with height
of the eye is that in principle one could do
Greetings, fellow dialists,
Long ago I posted a note about a meteorologist aboard a British weather
ship who observed three green flashes at one sun setting from three
decks of the ship. I worked out that this was just about possible.
Frank 55N 1W
---
izon."
> >
> >Atmospheric refraction has so many uncertainties that making such a
> >small adjustment is meaningless for practical purposes but it's an
> >interesting mathematical exercise.
> >
> >
> >From: sundial-boun...@uni-koeln.de
> >[mail
s but it's an
interesting mathematical exercise.
From: sundial-boun...@uni-koeln.de
[mailto:sundial-boun...@uni-koeln.de] On Behalf Of Th. Taudin Chabot
Sent: Wednesday, September 23, 2009 2:41 AM
To: sund...@rrz.uni-koeln.de
Subject: sunset/sunrise times
All programs that calculate the s
ut it's an interesting
mathematical exercise.
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On
Behalf Of Th. Taudin Chabot
Sent: Wednesday, September 23, 2009 2:41 AM
To: sund...@rrz.uni-koeln.de
Subject: sunset/sunrise times
All programs that calculate the
All programs that calculate the sunrise/sunset times use an eye
height of 0m. Many take the refraction in their calculations.
But what is the effect of a normal eye height of 1.5 m when the
observer is standing at sealevel like the beach. And when the eye
height is even considerabel higher becau
