>The photo caption says that it is a sundial located in the atrium in the National Acaedmies building (in Washington). <
Interesting though it doesn't seem to be a 'real' sundial, John. To me it seems to be more of a coloured light show that changes as the sun tracks across the sky. There is a little more at: http://www7.nationalacademies.org/arts/Kirkland_Needle.html where it says it is 'not a specific scientific device' Patrick --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
