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Sent from XFINITY Connect Mobile App -----Original Message----- From: [email protected] To: [email protected] Cc: Sent: 2016-08-17 3:45:40 PM Subject: RE: Re: gn to use- especially children. I've seen that even dialists get confused too. So when I was asked to redesign and install a replacement dial for the flawed Flandrau Planetarium human analemmatic I jumped at the chance. I was told that it is used by mostly elementary schoolchildren. So I tried to make it simple, easy-to-read, and user friendly. I replaced the flawed analemma in the old design with a straight date line with one week marks on the meridian. And added Roger's easy to use and useful Bailey Points. It is longitude corrected and has 15 minute time marks. A user information plaque will have an EOT graph to get watch time (much easier to use than an analemma). Here is the result: http://www.sundials.org/index.php/component/sundials/oneDial/825 -----Original Message----- From: sundial [mailto:[email protected]] On Behalf Of David Andersson Sent: Wednesday, August 17, 2016 3:30 PM To: Sundial Mailing List Subject: Re: Re: Double analemma dials In message <[email protected]> "fabio.savian" <[email protected]> wrote: > > I know an analemmatic sundial may have sophisticated versions to show > mean time, Fred your article is exhaustive, but I think it isn't the > better kind of sundial to give this info and to get a precison time > (position on the heels or on the middle of the feet, how vertical is > the hand rising above the head, estimation of the direction of the > shadow, graduations of the minutes, etc). Conversely it is a very > powerful instrument to involve people with gnomonics. > > Anyway I think a simple analemma on the meridian line, without explain > its huge limits, is not an option, it is an error. > > thank you, ciao, Fabio > > Fabio Savian > As far as Analemmatic sundials are concerned, surely the person who can be thanked for making these interactive features so popular all over the world must be Douglas Hunt of "Modern Sunclocks" in the UK who is responsible for these being installed in thousands of school playgrounds - plus famous Stately Homes and even the "Space Shuttle Memorial" (at Racine, Wisconsin), and his 'Human Sundials' are even mentioned within school-books due to the many educational benefits. I do not think that he subscribes to this Mailing List (having been 'chased away' many years ago, by people who were jealous of his own international success) - but I seem to remember some discussions on this List around 2 years ago, when Frank King (Chairman of "British Sundial Society") said that it was an excellent design due to self- adjusting to/from Daylight-Saving and coping with shadow lengths at different times of year in a better way than 'traditional' layouts. His website (www.sunclocks.com), even has a link to Brian Albinson. Doug's design does NOT use any Analemma, which is as this should be because (in my personal opinion) it would only 'confuse' the people who simply want to see their shadow indicating clock time (agreeing with their wrist-watch) - plus is maybe why "Sunclocks" have become so popular within public areas, compared with the more conventional sundials which could be costly as well as subject to theft/vandals. At the risk of having 'brickbats' thrown at me, I must explain that I have no "axe to grind" here - but I do think that Doug Hunt could be acknowledged for the services he has given to advancing both the popularity and understanding of sundials (of all types), especially with school-children who will become our 'Diallists of the future". Sincerely, Dave Andersson. -- --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
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