On 22/04/2011 12:19, Martina Addiscott wrote:
Is anyone aware of a commercially-available large 'Teaching Sundial', which
would be suitable for fulfilling that part of the UK National Curriculum ?
As many of you no doubt know, sundials are included in the Science section
of that curriculum, but each school decides for themselves how to cover it.
Hi Martin,
You may be interested in my educational 'Multi-dial' which very clearly
demonstrates the relationship between four of the most common sundials
(Equatorial. horizontal,vertical and polar).
A jpeg is too large for the SML so I'll email you a copy separately.
(copies available on request for recent members of SML).
The dial can be used outdoors in the sunshine or indoors using any
suitable bright electric light for classroom demonstrations on a dull
day. A 12 volt car headlamp bulb on the end of a 'wand' is ideal but any
bright table lamp will do.
The example in my photo' is only about 200mm wide but a larger one made
of plywood would serve for whole-class demonstrations.
One comment made about it was that it conveys the ideas so clearly there
is little left to explain. A good fault perhaps.
If you've not already seen it then "How Sundials Work" on the BSS
website could be useful too.
http://www.sundialsoc.org.uk/HDSW.htm
Tony Moss
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