Re: Creating .EPS file format for sundials..

Hi, EPS is a special form of pdf, see http://en.wikipedia.org/wiki/Encapsulated_PostScript I made a littpe pagram in R that amkes sundials in many formats. One of them is eps. If you need more details and if the other solutions did not help you out, please let me know. Thomas On 13 Jul 2010,

Re: portugal

sphere is a national symbol, adopted by Manuel 1 following the voyages of discovery. The armillary sphere is on the Portuguese flag, behind the crest. Regards, Roger Bailey Walking Shadow Designs -- From: Thomas Steiner finbref.2...@gmail.com

portugal

hi I'll be in Protugal over the next two weeks: Does anybody have a map of interesting sundials there? Thanks, thomas --- https://lists.uni-koeln.de/mailman/listinfo/sundial

Re: refraction formula

). On Tue, Mar 16, 2010 at 12:27 PM, Thomas Steiner finbref.2...@gmail.com wrote: Hi all, I am looking for a formula for refraction. At http://www.sundialsoc.org.uk/glossary/equations/equations.htm ist says: 10. Sun’s refraction Ro=1/ (tan(a+7.31/(a+4.4))) Ro is the refraction in arcmins

Re: How Sundials Work

Hi, have you thought about setting up at wikipedia for some languages so people can work together step by step on each document? Even images or graphics could be changed into other languages. I could contribute for the german translation. http://www.sundialsoc.org.uk/HDSW.htm is such a wonderful

refraction formula

Hi all, I am looking for a formula for refraction. At http://www.sundialsoc.org.uk/glossary/equations/equations.htm ist says: 10. Sun’s refraction Ro=1/ (tan(a+7.31/(a+4.4))) Ro is the refraction in arcmins for a temperature of 10ºC and an atmospheric pressure of 1010 mb. For other conditions, a

sundial origami

Hi, do you know a good ressource of origami sundials? I plan to redo a litte project with pupils and this could be a funny start! Thanks for posting links or sending patterns, Thomas --- https://lists.uni-koeln.de/mailman/listinfo/sundial

3d sundial-model?

Hi all, do you model your sundials before creating them in 3d- software like sketchup, blender or so? It helps if you want to know if anything around casts some shadow onto your sundial. I tried sketchup, but I am not yet an expert:

Re: Das Ergebnis Ihres e-Mail-Kommandos

helpful: THANK YOU. I did not reply to them, as I did focus on finishing the sundial. You can find images (in chronological order) at http://picasaweb.google.com/finbref/SonnenuhrBurgauberg I'm sooo happy with it! :)) Thomas 2009/12/22 Thomas Steiner finbref.2...@gmail.com: Thank you for your

zodiac lengths

Hi, a lot of sundials show the tweleve zodiac signs. Eg Gemini (♊) and Cancer (♋) do share the same region on the sundial. My question is: do they share *exactly* the same region or not? Is the starting date May 20 of one in line with the end-date July 22 of the other or not? The angles of the

Re: Das Ergebnis Ihres e-Mail-Kommandos

Dear Tony, thanks for your reply. For me this project has many dimensions. It is a sundial for my girlfriend's family. And it is a scientific project. And it should look fine. And it should help people who want to know time or even like thinking about their environment. The second point

Re: Das Ergebnis Ihres e-Mail-Kommandos

://www.openstreetmap.org/?mlat=47mlon=16zoom=13 - Erledigt. -- Weitergeleitete Nachricht -- From: Thomas Steiner finbref.2...@gmail.com To: sundial-requ...@uni-koeln.de Date: Tue, 1 Dec 2009 13:43:02 +0100 Subject: my west-sundial Dear sundialists, I am planing to make a west

astronomical constants

Hi, I'd like to impove my sun chart at http://commons.wikimedia.org/wiki/File:Sonnenstand.png It includes the equation of time with formulas from a paper from Blatter, you find R code on the images's page as well. I am now looking for exact current (2009 or 2010) values of the following three

Re: astronomical constants

Hi Aimo, Try the links below http://aom.giss.nasa.gov/srorbpar.html great thanks. This gives me (which is what I wanted): Orbital Parmameters for the Earth Long. of Year EccentriObliquityPerihel. (A.D.) city (degrees)(degrees)

Re: pupil project

it was big fun and I hope that some of the kids are now more curious on sundials. You can see some photos at http://picasaweb.google.com/finbref/Sonnenuhrprojekt (I hope you can see this gallery) Thomas 2009/6/24 Thomas Steiner finbref.2...@gmail.com: @John: this is a good idea and in fact what I

Re: pupil project

[mailto:sundial-boun...@uni-koeln.de]on Behalf Of Thomas Steiner Sent: Tuesday, June 23, 2009 10:38 AM To: Sundial Mailing List Subject: pupil project Hi, I will hold a half-day project with students next Monday. The first 60min we will try to understand what sundials are and how they work

Re: pupil project

will post my experiences and our success here on the mailinglist when we finished the project: thanks for all your ideas and help! Thomas 2009/6/24 Thomas Steiner finbref.2...@gmail.com: John, Edley, Don, Carl, Roderick, Andrew, Bill, ... Thank you very much for all your answers. I will look

pupil project

Hi, I will hold a half-day project with students next Monday. The first 60min we will try to understand what sundials are and how they work. After that we have two and a half hour to create sundials on our own. My proposal is to make something like this here:

Re: Shropshire Sundials And Google Earth

Hi, your project sounds (I am at work and do not have google earth installed, so I cannot see your map.) great, perhaps you can provide an online version of the map? Perhaps you want to read this: http://maps.google.com/support/bin/answer.py?hl=enanswer=68480#import Thomas Message: 1 Date:

Re: 3D analemma

printer at university, see some prictures at http://picasaweb.google.com/finbref/Sonnenuhren Let me know if you want/need more details, Thomas 2009/3/26 Thomas Steiner finbref.2...@gmail.com: Hi Art, I am very busy at work, perhaps i can only look at your problem later, perhaps on the weekend

Re: mathematical formula

Hi Tony, I'd be interested in the slides as well, please send them to me too. @Nani: I created a little program in R (some statistics softwarepackage) which gives (analemmatic) dials of horizontal and vertical sundials for different locations in pdf and other formats in a given (say cm) size.

Re: Sundials in a dome

Doug, not sure if I understood it correctly, but check out San Petronio Basilica in Bologna: [example of the influence of precession on sundials] ...But considering the example the 66.8m meridian line of San Petronio Basilica in Bologna which was planned by the famous astronomer Govanni Domenico

earth eccentricity

Hi, to calculate the eot I made a little R-programm, you find the code (and a fancy chart) at http://commons.wikimedia.org/wiki/Image:Zeitgleichung.png you can easily change the constant kappa=0.016722 to 0.0172 if you have any quastions concering the code, read the linked paper or feel free to

Re: Sundials and Geotags

The challenge is to populate the data base. The new would depends on user generated content. find here all geotagged sundials at wikipedia commons: http://maps.google.com/maps?q=http://toolserver.org/~para/temp/sundials.kml thomas ---

Re: Sundials and Geotags

/ wikipedia? c) will this archive be updated / revised by the sudial list community? thanx to all who contribute to the list Ulrich 50° 28' N, 7° 44' O -Original Message- Date: Sat, 20 Dec 2008 11:28:27 +0100 Subject: Re: Sundials and Geotags From: Thomas Steiner finbref.2...@gmail.com

Re: Mosque's sundials

Gianni and Roger, thank you very much for your help and descriptions. This was really enlightening. I added what I think is necessary to the images' description pages. Thanks a lot, Thomas --- https://lists.uni-koeln.de/mailman/listinfo/sundial

Mosque's sundials

Outside the new mosque (Yeni Camii) in Istanbul in Turkey there are several sundials with horizontal (?) gnomons. I suspect they show the time when to pray (Ṣalāt), but I lack definite information and I do not understand the sundials myself. Would be great if you can add anything... Some images

Re: Bernhardt's gnomons

Fred and Helmut, thanks for your replies. I will look into the patent this weekend in detail. Quick reply to Hemlut's remark: I think that sunrays will be always orthogonal to the axis of the gnomon (it's just parallel to the earth's axis), but it needs some maths (after describing the analemma

Re: Bernhardt's gnomons

Great, thanks. I contacted you privately. For sure I do not violate any copyright. Another thing that came to my mind: Perhaps someone has a copy of the „Sky and Telescope of 1966, where Martin Bernhardt built his sundial for some contest. Thomas

Bernhardt's gnomons

Dear all, I tried to collect information on Martin Bernhardt's special Gnomons which takes into account the equation of time in a equatorial sundial on a single scale to read off time, regardless of the date (almost - once a year the gnomon has to be changed). The idea is good and simple: just

Re: Rapid Prototyping for sundial parts

Hi Bill, Sounds interesting. Blender3d looks more like an art rendering program rather than CAD design. I'm not so much into it... perhaps... Was it hard to use? It needs some time, but then it was very flexible and good (including python programming). It's cross-plattform and open source

Re: Rapid Prototyping for sundial parts

Hi, I did a rapid prototyping of a sundial here at university a year ago. The software I used was blender3d (and python) and then I exported it into .stl. If you need any help/hints/files/sample-pictures, let me know. thomas ---

Re: 3D CAD printer - you send design, u receive object

I printed once a special gnomon with a 3d printer at university here. You can find some pictures at http://picasaweb.google.com/finbref/Sonnenuhren (and two I rendered in the computer). Thomas --- https://lists.uni-koeln.de/mailman/listinfo/sundial