The NASS Registry has pages on the "Pyrolarium" by Victor-charles Scafatia. It was a temporary incendiary sundial that fired "exploding mortars into the sky at each hour of the day". It was made for the Burning Man Festival in 1999. Go to the NASS Registry and click on: Nevada / Black Rock City / #493 http://sundials.org/registry/ Regards, Bob Terwilliger NASS Webmaster http://sundials.org
_____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alex Botkin Sent: Sunday, September 28, 2008 10:38 PM To: sundial@uni-koeln.de Subject: Temporary sundial Hello to all, I am contemplating a temporary sundial sculpture. It will be in its location for about two weeks maximum the last weeks of August. Long -119.22 Lat 40.76 That's the middle of the Black Rock Nevada desert. I'm not knowledgeable enough to even be considered an amateur, so apologize in advance for the simplicity of my questions. Could I erect a vertical gnomon and mark the hours as they occur based on a watch set to local time? (The children's Plunger learning project suggested this to me) Would this maintain accurate mean time (+- 2-3 minutes) during the duration of its service? Using the coordinates, I have plotted a triangular gnomon (using the free Shadows 3.0) . If I kept the angle of the gnomon as plotted would I be able to mark hours (as above ) ? Thank you, Alex
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