I should add, it would be an extremely confusing way to teach sundials, and I would not recommend this dial from a teaching standpoint. -Bill
On Sat, Apr 3, 2021 at 3:13 PM Bill Gottesman <billgottes...@gmail.com> wrote: > There is a much more detailed image of the mutli-purpose dial if you "look > inside" the book sample at > https://www.amazon.com/Time-Flies-Really-stands-still/dp/1977072658. > > This would not function as a common horizontal sundial (except at the > north or south pole). If it were properly tilted and oriented at your > latitude to function as an equatorial sundial, then it could work. You > would still have to manually rotate the backward-appearing gnomon to cast > its narrowest shadow. It is unclear from the limited sample of the book if > that is how the author intended the dial to be set up. > > -Bill > > > On Sat, Apr 3, 2021 at 2:14 PM Linda Reid <linda.r...@fastmessage.co.uk> > wrote: > >> >> Has any member of the List ever come across this book - and (if so), >> could you seriously recommend it as an educational item for schools? >> >> The title of it is "Time Flies - Really? Prove it!", from the author >> Brian Macfarlane. The ISBN number is 978-1977085498, which contains >> about 160 pages and is available via "Amazon" for around Five Pounds. >> >> Attached is a very small JPEG image, illustrating its 'front cover'. >> >> >> Apparently, it describes the use of his 'Multi-purpose Sundial' plus >> is aimed at schools as being a curriculum-wide project - but looking >> at the illustration on the front cover, it seems to be a 'NON-dial'! >> >> In a private Email to myself, the author claims it has been endorsed >> by Sir Anthony Seldon (Vice-Chancellor of "Buckingham University"), >> who seemingly has described it as being 'a good idea for schools'. >> >> As a teacher, I would prefer to have some independent opinions from >> sundial 'experts' - before considering its use for my own school, as >> this could be a "total waste of money" with no 'educational value'. >> >> >> I look forward to any information - either to the List, or privately. >> >> Sincerely, Linda Reid. >> >> >> -- >> >> --------------------------------------------------- >> https://lists.uni-koeln.de/mailman/listinfo/sundial >> >>
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