Thank you, Dan. There are two fundamental errors in the article by David Leafe for the Daily Mail. He has not understood the lesson of Frank King.
Error 1. "The tilt of the Earth's axis varies on a day to day basis." Here he confuses the "equation of time" with the "Earths axis". Error 2 "Noon on a sundial in Cambridge, which is an eighth of a degree in East of Greenwich, is 30 seconds earlier that is in a sundial in Greenwich. To adjust for this, the angle of the gnomon has to be calibrated to that of the local area." Not the angle of the gnomon has to be adjusted for this but the position of the hour lines. Willy Leenders Hasselt in Flanders (Belgium) Visit my website about the sundials in the province of Limburg (Flanders) with a section 'worth knowing about sundials' (mostly in Dutch): http://www.wijzerweb.be Op 21 feb 2019, om 10:23 heeft Dan-George Uza het volgende geschreven: > Here's the link. > > https://www.dailymail.co.uk/news/article-6727419/Top-sundial-expert-sheds-fascinating-light-art-form-fears-slipping-shadows.html > > Dan Uza > > On Thu, Feb 21, 2019 at 11:17 AM Colin Davis <colin.dav...@virgin.net> wrote: > Hi! > > In todays Daily Mail is a full page article by Frank King on his fear > about the demise of the sundial > > Cheers > > Colin Davis > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial >
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