Re: Unusual bi-annual sundial

in this link: http://www.isisinform.com/category/memorials/anthem-veterans-memorial/ Regards Patrick From: Frank King Sent: Saturday, January 21, 2017 2:59 PM To: Geoff Thurston Cc: John Goodman ; Sundial List Subject: Re: Unusual bi-annual sundial Mime-Version: 1.0 Content-Type: text/plain

Re: Unusual bi-annual sundial

Dear Roger, Thank you for your comments on the John Dee implementation of the Omar Khayyam calendar. > At one longitude, 77° W, the equinox > would always be on the same day. Is this > God's Longitude? Yes. At that longitude the vernal equinox would invariably fall on 21 March. Sadly, this

Re: Unusual bi-annual sundial

Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Dear Geoff, As so often, you cause me to reflect a little and to refine my analysis... > I wonder if the errors might be masked > by the 32 arc minute solar penumbra. In pondering this "instrument" I made the naive assumption

Re: Unusual bi-annual sundial

hngood...@mac.com> Cc: "Sundial List" <sundial@uni-koeln.de> Subject: Re: Unusual bi-annual sundial > Dear John, > > I wondered when someone would spot that there is a > whole can of worms waiting to be opened here... > >> Won't the factors that necessitate the a

Re: Unusual bi-annual sundial

On Jan 20, 2017, at 7:40 AM, Frank King wrote: > If I had been consulted, I would have suggested that the Great Seal should be > a little smaller so that it will always be wholly illuminated at the crucial > instant! That would have been a clever and elegant solution!

Re: Unusual bi-annual sundial

Dear John, I am not sure the Chief Engineer fully grasped what is going on though he has indeed appreciated that, at the required moment, both the altitude and the azimuth of the sun change from one year to the the next. In a crucial sentence he asserts: Each year, the center of the sun is

Re: Unusual bi-annual sundial

Thank you, Frank, for that comprehensive analysis of the problem. However, I wonder if the errors might be masked by the 32 arc minute solar penumbra. Best wishes, Geoff On 19 January 2017 at 16:33, Frank King wrote: > Dear John, > > I wondered when someone would spot that

Re: Unusual bi-annual sundial

http://www.onlineatanthem.com/news/memorial-science > <http://www.onlineatanthem.com/news/memorial-science> > > Patrick > > > From: John Goodman > Sent: Thursday, January 19, 2017 5:01 PM > To: Frank King ; Sundial List > Subject: Re: Unusual bi-annual sundial >

Re: Unusual bi-annual sundial

To: Frank King ; Sundial List Subject: Re: Unusual bi-annual sundial Thank you, Frank. You’ve sharpened my vague suspicions with mathematical clarity. > On Jan 19, 2017, at 11:33 AM, Frank King <f...@cl.cam.ac.uk> wrote: > > OK, take a deep breath and see what we

Re: Unusual bi-annual sundial

Thank you, Frank. You’ve sharpened my vague suspicions with mathematical clarity. > On Jan 19, 2017, at 11:33 AM, Frank King wrote: > > OK, take a deep breath and see what we are up against... ---

Re: Unusual bi-annual sundial

Dear John, I wondered when someone would spot that there is a whole can of worms waiting to be opened here... > Won't the factors that necessitate the addition > of a leap day prevent this alignment from > happening at exactly 11/11 11:11 every year? Quite so. No doubt you looked at the

Re: Unusual bi-annual sundial

Won’t the factors that necessitate the addition of a leap day prevent this alignment from happening at exactly 11/11 11:11 every year? From year to year, that calendar date occurs at a slightly different fraction of the year’s days. November 11 is the day 316 of 366 in 2016 and 315 of 365 in

Re: Unusual bi-annual sundial

Something else that happens twice a year is MIT Henge. http://www.dickkoolish.com/rmk_page/mithenge.html - Original Message - From: "Art Krenzel" To: "sundial@uni-koeln.de" Cc: Sent: Wed, 18 Jan 2017 22:41:15 + Subject: Unusual