Gino I do it the same way. However, as you can tell by my website, I'm trying to make sundials so simple that young school children can understand them. I've tried to simplify things as much as I could. A 3rd grade class installed one of my sundials.
I'm trying to think up an easy way for a class as young as first grade could make a sundial. Such as a very simplified website that says 1. Find your longitude and latitude by placing the point on this world map 2. Print out the PDF of the sundial that has been generated from the coordinates that you entered 3. Assemble the sundial 4. rotate it until it shows the correct solar time 5. Solar time can be found by setting your watch to the time on this website. 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! On Sun, Jul 6, 2014 at 5:32 AM, GINO SCHIAVONE <[email protected]> wrote: > 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 Schiavone > The Schiavone Studio > 1337 Gusdorf Road, Ste J > Taos, NM 87571 > > 575-758-7797 > 575-613-0943 > > > ------------------------------ > 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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