Re: On northern vs. southern dials

n these mysterious little brass markers there? John - Original Message - From:Jean-Paul Cornec To: Sundial, Mailinglist Sent: Sunday, March 03, 2002 5:41 AM Subject: Re: On northern vs. southern dials  Anselmo The sundial on the Place de la Concorde in Paris is a classical horizontal sundial w

Re: On northern vs. southern dials

:30 N  long.  5:30 E - Original Message - From: John Carmichael To: sundial@rrz.uni-koeln.de Sent: Sunday, August 01, 2004 3:44 AM Subject: Re: On northern vs. southern dials Hello Jean-Paul   When I went to Paris after the Oxford conference, we

Re: On northern vs. southern dials

: Re: On northern vs. southern dials Anselmo   The sundial on the Place de la Concorde in Paris is a classical horizontal sundial with the "Obelisque" as a vertical gnomon. Lines are now more or less erased due a lack of maintenance. There was a scheme with a short expl

Re: On northern vs. southern dials

Bonjour! Je lis votre message ci-dessous avec retard, et si ça ne vous ennuie pas, j'aimerais en effet recevoir une copie de l'article... Merci déjà! (Heureusement, à cette date-là, le 'Reply' fonctionnait encore...;-) ) Cordialement, Thierry van Steenberghe mailto:[EMAIL PROTECTED]

Re: On northern vs. southern dials

onday, March 04, 2002 7:13 PM Subject: Re: On northern vs. southern dials Anselmo et All, also I  have obtained  to the same conclusions of Fer ( and others)  ( Latitude = 45d) For curiosity I attach the graph of the daily mean number of hours of illumination of the vertical

latitude 45 degrees, was Re: On northern vs. southern dials

Living very near 45 degrees north I have noticed that horizontal and vertical dials have the same lay out (obviously, since lat=colatitude) Are there any other designs which would have some special property at 45 degrees? I'm interested in any special properties at all, no matter how trivial.

Re: On northern vs. southern dials

Anselmo et All, also I  have obtained  to the same conclusions of Fer ( and others)  ( Latitude = 45d) For curiosity I attach the graph of the daily mean number of hours of illumination of the vertical plane at different Latitudes. The plane is illuminated for a period (mean) of 9h 54m,   

Re: On northern vs. southern dials

EMAIL PROTECTED] http://www.iae.nl/users/ferdv/ Eindhoven, Netherlands lat. 51:30 N long. 5:30 E - Original Message - From: "Rod Heil" <[EMAIL PROTECTED]> To: Sent: Sunday, March 03, 2002 8:16 PM Subject: Re: On northern vs. southern dials > Anselmo, > > I might

RE: On northern vs. southern dials

/Eindhoven, Netherlandslat.  51:30 N  long.  5:30 E - Original Message - From: Anselmo Pérez Serrada To: Sundial, Mailinglist Sent: Sunday, March 03, 2002 5:02 PM Subject: Re: On northern vs. southern dials Hi Mike, hi diallists

Re: On northern vs. southern dials

Anselmo Perez Serrada asked: > Imagine an oriented wall (gnomonic declination equals to 0 deg in > one side and 180 deg in the other), all of us know that the southern > side is exposed more time to sunlight than the northern one, but where > is this difference bigger? It is clear that in the

Re: On northern vs. southern dials

: Anselmo Pérez Serrada To: Sundial, Mailinglist Sent: Sunday, March 03, 2002 5:02 PM Subject: Re: On northern vs. southern dials Hi Mike, hi diallists,      When I said a sundial in the North Pole I meant a sundial, say, at 1 cm from it. There the concept of North still

Re: On northern vs. southern dials

Anselmo, I might have an easy way to solve this in two dimensions. Start by imagining a three-dimensional ring-shaped object, which represents all of the points in the celestial sphere where the sun can be. It looks like part of a truncated globe wherein only the part between the tropics remain

Re: On northern vs. southern dials

--- Original Message - From: The Shaws To: sundial@rrz.uni-koeln.de Sent: Sunday, March 03, 2002 1:54 PM Subject: RE: On northern vs. southern dials Thinking about this question a little more - during the course of a complete year, doesn't every point on E

Re: On northern vs. southern dials

Please send me a copy of the L'Astronomie article on the Place de la Concorde sundial. Thank you for your offer. Sincerely, Harold Brandmaier   [EMAIL PROTECTED]

RE: On northern vs. southern dials

Thinking about this question a little more - during the course of a complete year, doesn't every point on Earth get 50% light and 50% dark? So, the further North (or South) you go, the more of the 50% shines on the South (or North) facing wall. So the North (or South) pole is the place to g

RE: On northern vs. southern dials

Surely the answer is the North (South) pole, where all sunlight falls on the South (North) facing wall, as you cannot build a North (South) facing one.   Mike Shawhttp://homepage.ntlworld.com/jmikeshaw/N 53º 21' 24"W 03º 01' 47"Wirral, UK.

Re: On northern vs. southern dials

Anselmo   The sundial on the Place de la Concorde in Paris is a classical horizontal sundial with the "Obelisque" as a vertical gnomon. Lines are now more or less erased due a lack of maintenance. There was a scheme with a short explanation in the june 1999 issue of "L'Astronomie". I can scan

RE: On northern vs. southern dials

selmo Pérez SerradaSent: Sunday, 3 March 2002 9:27 AMTo: Sundial, MailinglistSubject: On northern vs. southern dials Hi everyone,      Imagine an oriented wall (gnomonic declination equals to 0 deg in one side and 180 deg in the other), all of us know that the southern side is ex

On northern vs. southern dials

Message text written by INTERNET:sundial@rrz.uni-koeln.de > Does anybody know if the lines are still drawn or were they erased?< I believe that the design was never completed but that what was laid out is still visible. No doubt others will know more. Patrick -

On northern vs. southern dials

Hi everyone,      Imagine an oriented wall (gnomonic declination equals to 0 deg in one side and 180 deg in the other), all of us know that the southern side is exposed more time to sunlight than the northern one, but where is this difference bigger?  It is clear that in the equator and in