Re: Are there any commercially-available 'Teaching Sundials', for schools ?

2011-04-23 Thread Willy Leenders
I am happy to live in my country, preferring a country already over one year without a governement to a governement so bureaucratic ! Willy Leenders Hasselt in Flanders (Belgium) Visit my website about the sundials in the province of Limburg (Flanders) with a section 'worth knowing about sundia

R: Re: Are there any commercially-available 'Teaching Sundials', for schools ?

2011-04-23 Thread sun.di...@libero.it
"Against stupidity the gods themselves contend in vain." Friedrich von Schiller Greetings. Gian Casalegno--- https://lists.uni-koeln.de/mailman/listinfo/sundial

RE: Are there any commercially-available 'Teaching Sundials', for schools ?

2011-04-23 Thread Larry
Martina, et. al., In the world of contradiction that we live in, perhaps some recent articles from the UK itself regarding the NEED for sunlight on the skin would help your authorities come to a better conclusion. (below) After reading these, one would conclude that it would be irresponsibl

Re: R: Re: Are there any commercially-available 'Teaching Sundials', for schools ?

2011-04-23 Thread Brent
Maybe they need the type of sundial that doesn't cast a shadow but casts a spot of light. That way the kids can be in the shade. What might be fun for a class is to make a birthday window in the classroom. When a students birthday is approaching ask them to bring in a photo of themselves and

An interesting digital orrery

2011-04-23 Thread Frederick Jaggi
A company called Dynamic Designs produced this very interesting orrery based on NASA data as a demonstration piece: http://www.dynamicdiagrams.com/work/orrery/ Frederick Jaggi Horas Non Numero Nisi Serenas --- https://lists.uni-koeln.de/mail

Analemmatic dials at schools ?

2011-04-23 Thread Claude Hartman
I would like to question the instructional qualities of analemmatic sundials. Unlike Tony Moss' 'Multi-dial', it is my view that there is only one relationship easily illustrated - the projection of a polar dial on to a horizontal surface is an ellipse with corresponding hour points. It is e