Re: Monumental Sundial; 14 missing seconds

2008-02-18 Thread Frank King
Dear Chris, John [Davis], et al Thank you for your replies. I do remember the Allen Mills article and will dig it out. Amongst other things I think he noted that the solar disc isn't as bright at the edges as in the centre (astronomers call this limb-darkening) and the obvious point that

Re: Monumental Sundial; 14 missing seconds

2008-02-18 Thread Gianni Ferrari
] To: Chris Lusby Taylor [EMAIL PROTECTED] Cc: sundial@uni-koeln.de Sent: Sunday, February 17, 2008 10:22 AM Subject: Re: Monumental Sundial; 14 missing seconds Dear Chris, I am a bit behind with my reading and I have only just read your comments, and corrected comments, on the umbra

Re: Monumental Sundial; 14 missing seconds

2008-02-18 Thread Gianni Ferrari
I have put the files of my articles in Mediafire : *The Shadow And Penumbra Of A Rectilinear Element* in http://www.mediafire.com/?9dmzgtm3fd1 *Le Proprietá dell'ombra – Aspetti Gnomonici (The Shadow's propreties – Gnomonic Aspects (in Italian) in :* http://www.mediafire.com/?6ys1mnztowm **

RE: Monumental Sundial; 14 missing seconds

2008-02-18 Thread John Carmichael
you guys think? John -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roger Bailey Sent: Sunday, February 17, 2008 10:33 PM To: Chris Lusby Taylor; Frank King Cc: sundial@uni-koeln.de Subject: Re: Monumental Sundial; 14 missing seconds I remember John

Re: Monumental Sundial; 14 missing seconds

2008-02-17 Thread Frank King
Dear Chris, I am a bit behind with my reading and I have only just read your comments, and corrected comments, on the umbra discussion. Subject to your corrections, I concur with almost all you say but I feel a little amplification of one of your follow-up remarks is needed. You say... If the

Re: Monumental Sundial; 14 missing seconds

2008-02-17 Thread Chris Lusby Taylor
or growing. Regards Chris - Original Message - From: Frank King [EMAIL PROTECTED] To: Chris Lusby Taylor [EMAIL PROTECTED] Cc: sundial@uni-koeln.de; [EMAIL PROTECTED] Sent: Sunday, February 17, 2008 6:22 PM Subject: Re: Monumental Sundial; 14 missing seconds Dear Chris, I am a bit

Re: Monumental Sundial; 14 missing seconds

2008-02-17 Thread JOHN DAVIS
Dear Frank, Chris and the List, An experiment to determine the position of the shadow edge was reported by Allan Mills in his article Sunlight and Shadows - or, what's the point of big sundials?, British Sundial Society Bulletin 96(1) pp.22-27 (February 1996). Allan's key result for the

Re: Monumental Sundial; 14 missing seconds

2008-02-17 Thread Roger Bailey
comments to refresh my memory. Regards, Roger Bailey - Original Message - From: Frank King [EMAIL PROTECTED] To: Chris Lusby Taylor [EMAIL PROTECTED] Cc: sundial@uni-koeln.de Sent: Sunday, February 17, 2008 10:22 AM Subject: Re: Monumental Sundial; 14 missing seconds Dear Chris, I am