tony,
The 3D model sounds like something I've been mulling over for years. Please
send me a copy too.
Cheers,
++ron
----- Original Message -----
From: "Tony Moss" <[EMAIL PROTECTED]>
To: "Sundial Mail List" <sundial@rrz.uni-koeln.de>
Sent: Friday, June 14, 2002 2:41 AM
Subject: Re: seminar
> Greg,
> >
> >I have to conduct a 15-30 minute workshop on horizontal sundials. Real basic
> >stuff, how to use the sun to tell time, how to make and position a simple
> >horizontal dial, etc.. Has anyone ever had to give such a talk and if so
> >what type of preparation, materials, handouts, slides, etc... worked best.
>
> I recently gave a similar talk to a client Rotary Club ("All about
> Sundials in 15 minutes") and prepared an OHP transparency which shows the
> essential relationship between an Equatorial Dial and a Horizontal Dial
> but also goes on to show vertical and Polar surfaces arranged around a
> common polestyle. It also includes a north-facing Vertical surface. The
> original diagram appears in Frank Cousins' book and I have always been
> impressed by its ingenious simplicity. My developed version in Adobe
> illustrator is in colour and you are welcome to a GIF or PDF copy if you
> think it would help.
>
> Just to 'gild the lily' a 3D model was also made which, in conjunction
> with a point-source halogen desk lamp, demonstrates the simultaneous
> functioning of all four dials 'before your very eyes'. There are JPEGs
> available of this from various angles together with a sunlit shot of the
> model outdoors.
>
> If 'one picture is worth 10 000 words' then perhaps one working model is
> worth many pictures. The only problem which results is that the concepts
> involved are immediately obvious to even a non-specialist....which leaves
> you very little to actually TALK about ;-)
>
> Copies available to any list member on request. This is the same
> material which I offered/distributed some weeks ago.
>
> I retain the copyright of all my images but these can be freely used for
> any non-commercial purpose.
>
> Best Wishes
>
> Tony Moss
>
> -
-
