Greetings Donald, One of the ways I like to find north is to determine the latitude and longitude of a location with Goggle Earth (to Goggle Map). Then I enter that information in the NOAA Sunrise/Sunset Calculator at http://www.esrl.noaa.gov/gmd/grad/solcalc/sunrise.html which will tell me the time of Solar Noon on any particular date. Armed with this information I can use a plumb-bob over a point and mark a second point on the shadow of the plumb-bob string at solar noon the moment the sun is "southing". A line drawn between these two points is a north-south line.A long way around the barn, but rather fun. Sunny hours,
Gino Schiavone Gino SchiavoneThe Schiavone Studio1337 Gusdorf Road, Ste JTaos, NM 87571 575-758-7797575-613-0943 Date: Sat, 5 Jul 2014 10:23:29 +1000 Subject: sundials in schools From: [email protected] To: [email protected] I would also love to see sundials in schools. Not just an analemmatic dials but the multi dial as well. This is why I am trying to find an easy way to find north. I would like to be able to use a horizontal dial and rotate it until it reads the true time. Obviously this won't work with a standard horizontal dial because we are not all on the same longitude. The other reason is the equation of time. However, I believe it would work if there was a website that calculate setting your watch to LAT instead of LMT. This website would have to take in account the longitude as well as the day of the year it is. You then rotate the sundial until it is the correct time on your watch. Cheers Donald Christensen 0423 102 090 www.sundialsforlearning.com This e-mail is privileged and confidential. If you are not the intended recipient please delete the message and notify the sender. Un-authorized use of this email is subject to penalty of law. So there! --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
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