Re: Calculating azimuth of sunrise and sunset from present back 25,000 years

2012-06-24 Thread Frank King
Dear Brad et al, I have enjoyed this thread and you ask one crucial question which is more difficult to answer than many might think... In the meantime, could you tell me what the latitude of the place of interest is? This question is flawed. The final word should not be is but was! In

The most exact sundial of the world In Samedan!

2012-06-24 Thread Reinhold Kriegler
Dear friends! Have a look to Switzerland! Genaueste Sonnenuhr der Welt steht im Engadin Auf Muottas Muragl auf 2456 Meter über Meer ist am Donnerstag die genaueste Sonnenuhr der Welt eingeweiht worden. * http://www.bote.ch/vermischtes/genaueste-sonnenuhr-der-welt-steht-im-eng adin Quelle:

RE: The most exact sundial of the world In Samedan!

2012-06-24 Thread Dave Bell
It’s an interesting dial and looks well engineered, but there sure isn’t much information around about it. Appears to be an Equatorial dial with rotating outer ring to adjust for EoT and Summer Time, but I don’t see how one *reads* it. That tiny axial pin is useless as a gnomon except at the

Sundials in Warmia and Mazury (Poland)

2012-06-24 Thread Darek Oczki
Hello Two weeks ago me and my girlfriend had a trip through north part of Poland (Warmia and Mazury - famous for huge lakes, forests and a big number of storks). We had visited over 20 little towns and villages searching for sundials and were lucky to see 36 pieces. If anyone would like to

Re: The most exact sundial of the world In Samedan!

2012-06-24 Thread Fabio nonvedolora
On Sundial Atlas there is the card of this sundial with 4 pdf files attached, one of them with technical info. All of them are in german. www.sundialatlas.eu/atlas.php?so=CH220 ciao Fabio Fabio Savian fabio.sav...@nonvedolora.it Paderno Dugnano, Milano, Italy 45° 34' 10'' N, 9° 10' 9'' E, GMT+1

Re: The most exact sundial of the world In Samedan!

2012-06-24 Thread Roger Bailey
Thanks Fabio, The link you provided Sine Sole Sileo has a link to a pdf that gives instructions in several languages including English. Here is a direct link: http://objects.estm.xiag.ch/images/Bergbahnen/Bedienungsanleitung_Sonnenuhr_Balken.pdf Regards, Roger Bailey From: Fabio nonvedolora

Re: Calculating azimuth of sunrise and sunset from present back 25, 000 years

2012-06-24 Thread Roger Bailey
Hello Frank and all, You raise an interesting point . At first I thought that we should not confuse human time, 25,000 years with geological time, 25 million years. Then I reconsidered. We tend to think in terms of the Rock of Ages, solid enduring and unmoving, not considering the geological

Re: Calculating azimuth of sunrise and sunset from present back 25, 000 years

2012-06-24 Thread David Patte ₯
If I'm not mistaken: 25,000 x 6 mm = 150,000 mm = 150m, not 1500m Did you mean cm? On 2012-06-25 0:11, Roger Bailey wrote: At this time I am moving 6 mm per year towards the east, as determined by precise GPS and laser surveys. Over 25,000 years this movement is a mile, 1.5 km and a lot of