Re: Sundial by Sir Christopher Wren
Hello Mac, together with Charles K Aked and Nicola Severino and my 2000 articles we created in 1997 the International Bibliography of Gnomonica with 12000 titles concerning books printed from 1500 to 1997 and articles from international magazines. So, if you have a question to authors, years, titles etc. you can get an answer. With sunny greetings The German Sundial Society Klaus Eichholz Zum Ruhrblick 5 D-44797 Bochum [EMAIL PROTECTED] Von: "Mac Oglesby" <[EMAIL PROTECTED]> An: "Sundial mailing list" Gesendet: Samstag, 29. April 2000 17:09 Betreff: Sundial by Sir Christopher Wren > > Hello Sundial List, > > I've been trying to locate detailed information on the design and > construction of Sir Christopher Wren's large vertical sundial > installed at All Souls College at Oxford in 1658. I'm familiar with > Margaret Stanier's booklet, and I have a copy of a pamphlet published > very recently by Dr John Simmons (of All Souls), but neither comes > even close to providing the details I seek. > > My efforts to find information on any subject using the internet have > generally been exercises in frustration. I am constantly amazed by > what some of you are able to find and would greatly appreciate any > hints about how to conduct a successful search. > > It doesn't seem possible that in the more than 3 centuries since the > sundial was first installed no one has written extensively on its > design and construction. But how to find those papers? > > Thanks for any help. > > Mac Oglesby > Putney, Vermont USA
Re: 31th Annual Meeting of ARBEITSKREIS SONNENUHREN of DGC
Lieber Herr Kriegler, waren Sie schon auf dieser Seite? http://www.hab.de/ausstellung/kircher/index.htm Nichts wie hin. Ihr Klaus Eichholz Zum Ruhrblick 5D44797 Bochum[EMAIL PROTECTED] - Original Message - From: [EMAIL PROTECTED] To: sundial@rrz.uni-koeln.de Sent: Wednesday, June 05, 2002 9:46 PM Subject: 31th Annual Meeting of ARBEITSKREIS SONNENUHREN of DGC Dear friends,last weekend the 31st annual meeting of the German Arbeitskreis Sonnenuhren of DGC took place in Nuremberg. Very special thanks to Ludwig Engelhardt, who had organized the meeting absolutely wonderful! Because of Ludwig's good connectionsto the weather-god we could also enjoy an excursion to the beautiful sundials of the town in full sunshine . We did not see all the forty of them, however! A good reason to come again! Ludwig Engelhardt has done a special training-program for the city-guides. So almost all of them know about the sundial-treasures of the town! You can also book sundial-tours at him: >[EMAIL PROTECTED]<Among the lectures we have listened to, one of it was a remarkable highlight: The lecture, which was provided by Carlo Heller!Helios.. is an extraordinary new German mirror - sundial - invention of great beauty!Please don't miss to have a look at: www.heliosuhren.de ! Best regardsReinhold Kriegler* ** *** * ** ***Reinhold R. KrieglerLat: 53° 06' 53'' N Long: 8° 53' 54" E
Re: High Noon
Helllo Mac, some answers were given to you. My answer is "High noon" is correlated with the temporal hour "None" used by the monks. But as the Benedict rules demanded to have no food before this time it changed more and more foward. The same thing happened with "vesper". Best wishes Klaus EichholzZum Ruhrblick 5D44797 Bochum[EMAIL PROTECTED] Arbeitskreis Sonnenuhren Germany - Original Message - From: Mac Oglesby To: sundial@rrz.uni-koeln.de Sent: Wednesday, June 26, 2002 9:22 PM Subject: High Noon Now and then I run across the phrase "High Noon." Can someone please tell me what that means? I didn't find it in John Davis' excellent glossary.Best wishes,Mac Oglesby-
Re: The fly on Styained Glass Sundials
Rereading the stuff I found Hans Behrendt published more about thesedials in: Schriften der Freunde alter Uhren, Band XIX, 1990 (German) p.175-190 Behrendt describes in his essay 48 English Glas-Sundials, 28 with a fly. Arbeitskreis Sonnenuhren Klaus EichholzZum Ruhrblick 5D44797 Bochum[EMAIL PROTECTED] - Original Message - From: fer j. de vries To: sundial Sent: Friday, July 04, 2003 5:18 PM Subject: The fly on Styained Glass Sundials Rereading the stuff I found I see Hans Behrendt also published about thesedials in:Schriften der Freunde alter Uhren, Band XIX, 1980 (German)There are 14 non UK dials and 4 UK dials described.Photo's in black & white.Fer J. de VriesDe Zonnewijzerkringmailto:[EMAIL PROTECTED]http://www.de-zonnewijzerkring.nlHomemailto:[EMAIL PROTECTED]http://www.iae.nl/users/ferdv/index-fer.htmEindhoven, Netherlandslat. 51:30 N long. 5:30 E-
Re: Sundial of glass
Hi John, there is another artist Iwan Kahn, Switzerland, who makes nice sundial of glass. Perhaps you look at his web-site http://www.kahn-glas.com/Sonnenuhren/Fenster-Sonnenuhr/fenster-sonnenuhr.html Best regards Klaus Eichholz Arbeitskreis Sonnenuhren Deutsche Gesellschaft für Chronometrie Klaus EichholzZum Ruhrblick 5D44797 Bochum[EMAIL PROTECTED] John L. Carmichael Jr.Sundial sculptures925 E. Foothills Dr.Tucson Arizona, 85718 USATel: 520-696-1709Email: [EMAIL PROTECTED]Sundial Sculptures Website: http://www.sundialsculptures.comStained Glass Sundials Website:http://advanceassociates.com/Sundials/Stained_Glass
Re: sundials in the Frankfurt region
Dear Sara, there is another sundial collection in Frankfurt which is worthwhile to visit. I should recommend: Museum für Kunsthandwerk Schaumannkai 17 Here you will find the Bovius-Sundials from 1718 and 1721. Is a new coloured foto avaible from your Bovius-Sundial 1718, we talked about? Kind regards Klaus Eichholz Zum Ruhrblick 5D44797 Bochum[EMAIL PROTECTED] Dear Sara, there are sundial collections in Frankfurt and nearby in Darmstadt and Fulda which are worthwhile to visit. I should recommend: Historisches Museum Frankfurt (30 portable dial), Hessisches Landesmuseum Darmstadt (14 portable), Stadtmuseum Fulda (11 portable). Kind regards Karlheinz Schalddach - Original Message - From: Sara Schechner To: sundial@rrz.uni-koeln.de Sent: Monday, February 02, 2004 10:51 PM Subject: sundials in the Frankfurt region Hi friends,I am going to Frankfurt, Germany on business in mid-February, and am wondering if there are good collections of sundials (portable or fixed) in that neighborhood that I might visit, and whom I should contact locally to gain access to museum collections.I am also interested in medieval and early renaissance mirrors, so if any of you know of collections of those too, please let me know!Best regards,SaraSara Schechner, Ph.D.David P. Wheatland CuratorCollection of Historical Scientific InstrumentsDepartment of the History of ScienceHarvard University, Science Center 251cCambridge, MA 02138Tel: 617-496-9542Fax: 617-496-5932-
RE: Achas Sundial
_ I that rather held it better men should perish one by one, Than the earth should stand at gaze like Joshua's moon in Ajalon!_ I can't figure the meaning of this, and don't get the (astronomical?) reference to "Joshua's moon in Ajalon." Dear George It is possible, that the shadow of a sundial stands still and goes in the opposite direction. This is mentioned in the Bible as the Sundial of Achas: 2. Kings 16, 10-11; 20, 9-11; Isaias 38, 8 and Sirach 48, 22-24. I give some of the literature and thesis about this subject. Mayer, G. U. (1610) De Sole tempore Hiskiae retrogrado., Wittenberg. Karl, Bernard Peter (1700 ???) De miraculo solis vel umbrae in Ezechiae Horologio dissertatio, cum mantissa de sole et luna a Josua consistere jussis., Bremen. Stuart, Bernard (1735) Ephemeris ecclestica, astronomica-astrologica., Salzburg. Sachse, Julius F. (1895) Horologium Achaz (Christopherus Schissler, Artifex). Proc. American Philosophial Society (NR. S. 21-30. Elsner, Walter (1989) Die Sonnenuhr des Achas - Das Raetsel der Schattenumkehr - biblisches Wunder oder Spiel der Natur?. SFAU (NR. S. 149-156. Thank you for your answer. Is there anybody who has other literature??? Klaus Eichholz Arbeitskreis Sonnenuhren Zum Ruhrblick 5 D-44797 Bochum e-mail: [EMAIL PROTECTED]
Achas Sundial
Dear Fer, thank you, that you remembered me, that M.J. Hagen (1985) wrote in Bulletin 85.3 an article about the retrogration. I read it again and also W.Elsner (1989), who knew the article of Hagen. As Jerusalem has a location of 32 Grad North the explantions of Hagen don¥t solve the problem of Achas Sundial. W. Elsner wrote, that people can observe the retrogradiation also in northern latitudes, when the Polos has an angle less then 20 Degrees to the inclined plane on horizontal and vertical sundials. He makes also suggestions for other inclinations of the Polos. But to solve the miracle of Achas Sundial the question was and is: Under what conditions did the Achas Sundial work? Klaus Eichholz Germany
Re: obliquity of the ecliptic: accuracy of formulae
Hallo Luke, I have seen your program jd.exe and your formulas. Can I use the formulas for a Date before Christ? For a special e = 24.094 I need the century. Is one solution 3710 before Christ? What is about the accuracy of the formula for former centuries? Klaus Eichholz
Sicily-Sundials
Hello! I plan a yourney to Sicily next year. Please help me to draw up a list of sundials in this area or South Italy. Thanks for your help! Klaus Eichholz [EMAIL PROTECTED]
Re: sundial in museum
> A few months ago I saw a display of a sundial in the Shrine of the Book in > the Israel Museum in Jerusalem. The dial doesn't look like any of the > types of dials shown in Gibbs' book, Greek and Roman Sundials; yet it > belongs more or less to the same area and period. Anybody cares to comment ? > Thanks Ronit Maoz. > hallo ronit, perhaps I can help you. A picture of your sundial is on the front of the book: A Day at Qumran - The Dead Sea Sect and its Scrolls The Israel Museum 1997 Catalogue no. 394 ISBN 965 278 206 8 Inside is a lecture from Matthias Albani, Uwe Glessner and Gerd Grasshoff An Instrument for Determining the Hours of the Day and the Seasons (Sundial) They analyze, that the "sundial" works like a azimuth-sundial. And I think they are right. With best wishes Klaus Eichholz [EMAIL PROTECTED]
RE: Sundials in DANMARK
Dear Jean-Paul, for Germany we have a big catalogue with 8000 sundials in all places: Hugo Philipp, Daniel Roth, Willy Bachmann: Sonnenuhren Deutschland und Schweiz (1994) Deutsche Gesellschaft f¸r Chronometrie ISBN 3-923-422-121 Some Sundials in Danmark you can get from: Willy Bachmann, D-40764 Langenfeld, Haus Gravener-Str. 41 A, Tel. 02173 78427 salutations Klaus Eichholz Arbeitskreis Sonnenuhren Zum Ruhrblick 5 D-44797 Bochum [EMAIL PROTECTED]
Re: Sundials in Germany
Dear Hussam Bachir, I am living in Bochum and you can visit me and all my literature about sundials. We have a catalogue with 1 Sundials in Germany. > Any body knows interesting sundial sites in Germany near Deuseldorf, > Essen, Bochum or Dortmund? Klaus Eichholz [EMAIL PROTECTED] Zum Ruhrblick 5 D-44797 BOCHUM
RE: volvella
Item Subject: VOLVELLA.TXT
Re: Dial at Schloss Bad Soden
Dear Tony Moss at the first glance it seems an astonishing curiosity. Look twice. 1) The picture with the sun is independent and has 16 lines, which are not used to read the hours. 2) The scale of the figures gives the hours with the gnomon on the top of the edge. Sincerely Klaus Eichholz - Arbeitskreis Sonnenuhren [EMAIL PROTECTED] Zum Ruhrblick 5 D-44797 BOCHUM
Re: Using one's hand as a sundial
Dear Bob Terwilliger, There are severals books from a German author about this subject. The Sundial is also called "Bauren-Compass" or in English "Farmers compass". It is also described by Sebastin Muenster. Author:Koebel, Jakob Title: Eyn kuenstliche sonn Uhr in eynes yeden menschen Lincken handt, gleich wie in einem Compass, zu erlernen, darinnen alle stund des tags, durch den schatten der Sonnen, mit hilf eyns strohalmens, odder sonst eynes schlecten höltzleyns, gefunden und erkennet werden. Printed by P. Jordan, Mainz. (1532). Best regards Klaus Eichholz Arbeitskreis Sonnenuhren [EMAIL PROTECTED]
Fw: dial furniture, astrologic houses
-Ursprüngliche Nachricht- Von: Eichholz <[EMAIL PROTECTED]> An: Mario Arnaldi <[EMAIL PROTECTED]> Datum: Montag, 11. Januar 1999 17:03 Betreff: Re: dial furniture, astrologic houses >Mario Arnaldi wrote: >>Nevertheless, there is a system, mostly used up to nowadays in England that >>is called, "ecliptic houses" or "zenital" that, I think, divide the >>ecliptical circle. >>I don't know for sure if the "domus planetarum" (the planet's houses) are >>the same as the astrological houses, but the houses of the planet was, in >>ancient past, exactly the zodiacal sign, and this is testified in many >>medieval books. > >Dear Mario, > >Indeed there is a difference between the planet´s houses, where the planets >are correlated to the signs of the zodiak, and the twelve astrological >houses or Domifying Circles. They start with the aszendent in the east. The >aszendent usually doesn´t start with the beginning of a sign, becauce it is >dependent from the hour of birth and the birthplace. If You are interested, >I can send an example for a horoscope. >As You and Fer mention, there are different systems to construct >astrological houses: >Placidus (the general system), but also the systems of Koch, Regiomontanus, >Porphyrus, Alcabitus, topocentric, equal system. >Generally there are following meanings for the houses form 1 to 12: >Life, Wealth, Brothers, Parents, Pleasure, Sickness, Partners, Death, >Religion, Profession, Friends, Enemies. >On Sundials only the houses 7 -12 from sunrise to sunset are possible. > >Klaus Eichholz > >
Re: I need help....
> We have now: > Strassbourg, France 1493 > Krakow, Poland 1485 > Utrecht, Netherlands 1463 > > But where is the oldest? > I am not for sure that the Dutch one is the winner. > Who knows of older ones? New in this list: Kaschau, Slowakia 1477 After Zinner there is a sundidal at the cathedral at the south wall in Kaschau, Slowakia, from 1477. Would it be possible to have pictures from Krakow and Utrecht? Best regards Klaus Eichholz
Re: I need help....
> >We have now: >Strassbourg, France 1493 >Krakow, Poland 1485 >Utrecht, Netherlands 1463 > >But where is the oldest? >I am not for sure that the Dutch one is the winner. >Who knows of older ones? Dear Fer, An older one on a wall is Duderstadt, Germany, 1456 also old is Kaschau, Slowakia, 1477 A list you find in Zinner: Alte Sonnenuhren an europäischen Gebäuden, page 13 Happy dialling Klaus Eichholz [EMAIL PROTECTED]
Re: I need help....
>>> We have now: >>> Strassbourg, France 1493 >>> Krakow, Poland 1485 >>> Utrecht, Netherlands 1463 >>> >>> But where is the oldest? >>> Who knows of older ones? >> >>New in this list: >>Kaschau, Slowakia 1477 >> >>After Zinner there is a sundidal at the cathedral at the south wall in >>Kaschau, Slowakia, from 1477. >What in heaven's name is Kaschau? Surely there is a proper Slovak name? I >admit that many people will not recognize e.g.Slavkov as Austerlitz, but for >those who do not have maps from the Austro-Hungarian monarchy it may be >easier to find under its native name. Here it is from the Internet: Koice b Pronunciation: [kô´shitse] Ger. Kaschau, Hung. Kassa, city (1990 est. pop. 237,100), E Slovakia. It is a major industrial center and transportation hub and a market for the surrounding agricultural area. The city's industries include food processing, brewing and distilling, and the manufacture of machinery, cement, and ceramics. A petroleum refinery and a modern iron and steel center are in nearby Huko. Originally a fortress town, Koice was chartered in 1241 and became an important trade center during the Middle Ages. It was frequently occupied by Austrian, Hungarian, and Turkish forces. By the Treaty of Trianon (1920) the city passed from Hungary to Czechoslovakia. Koice's most notable historic buildings are the Gothic Cathedral of St. Elizabeth (14th15th cent.), the 14th-century Franciscan monastery and church, and an 18th-century town hall. The city also has a university and several cultural institutions. Klaus Eichholz
Re: Mottoes research
Hi Alain, more than 700 mottoes you can find in an old book: Mrs. Alfred Gatty: The book of sundials. London (1890) Klaus Eichholz Zum Ruhrblick 5 D-44797 Bochum [EMAIL PROTECTED] Hi, all the gnomonicians ! My son is studying at Morteau's School for Clock. He's on the search for an old book, called "800 devises de cadrans solaires" written by Ch.BOURSIER on year 1936. Does any on the list know about this book, or able to send me a copy, or more recent list of any book speaking about the sundials mottoes. Web adresses are welcome too ! Many thanks ! Alain R. MORY Salut à tous les gnomonistes ! Actuellement à l'école d'horlogerie de Morteau (Doubs), mon fils recherche le livre "800 devises de cadrans solaires", de Ch.BOURSIER, paru en ... 1936 chez Berger-Levrault. QQn l'aurait-il (à vendre) ? ou en copies, ou en fichiers internet ou... ? D'avance merci ! Alain MORY
Re: Fregier theorem
Hallo Peter an John
I found this text from 1936 of the Fregiers point.
Best wishes
Klaus Eichholz
JFM 62.0739.04
Krishnaswami Ayyangar, A. A.
Theory of the general Frégier-point. (English)
[J] Math. Gaz., London, 20, 191-198.
Published: 1936
In einer Ebene seien gegeben ein Kegelschnitt $S$, ein Punkt $P$ und das Paar
der Kreispunkte $I$, $J$. Die Polaren von $I$ und $J$ bezüglich $S$ schneiden
$PJ$ und $PI$ in $L$ und $M$, und $LI$, $M J$ schneiden sich in $Q$. Die
Verbindungslinien des Mittelpunktes $O$ von $S$ mit $P$ und $Q$ sind gleich
geneigt gegen die Asymptoten und gegen jede Achse des Kegelschnitts. Das
Verhältnis $OP : OQ$ ist gleich dem Cosinus des Asymptotenwinkels. Die Punkte
$P$ und $Q$ nennt Verf. ein ``isocouple", $P$ den linken isoklinen Punkt von
$Q$ und $Q$ den rechten isoklinen Punkt von $P$. Liegt $P$ auf $S$, so ist $Q$
der gewöhnliche {\it Frégier}sche Punkt. Deshalb nennt Verf. im allgemeinen
Falle $Q$ den allgemeinen {\it Frégier}schen Punkt. Wenn $S_1$, $S_2$, $S_3$
drei linear unabhängige Kegelschnitte sind, für die ein gegebenes Punktpaar
$PQ$ ein Isocouple ist, so sind alle Kegelschnitte, die dasselbe Isocouple
haben, in dem linearen dreiparametrigen System $\lambda_1 S_1 + \lambda_2 S_2 +
\lambda_3 S_3 + \lambda_4 L^2 = 0$ enthalten, wo $L = 0$ die uneigentliche
Gerade ist. Der Ort der rechten isoklinen Punkte eines Punktes $P$ bezüglich
eines Kegelschnittbüschels ist im allgemeinen eine gerade Linie, der Ort der
linken isoklinen im allgemeinen ein Kreis. Es folgen metrische Eigenschaften
eines Isocouples, seine Beziehungen zu der durch das Isocouple gehenden {\it
Apolloni}schen Hyperbel und zu einem vom Verf. gefundenen Achtpunkt- oder
Fusspunktkegelschnitt des vollständigen Vierecks: Die drei Gegenseitenpaare des
Vierecks haben, als entartete Kegelschnitte aufgefasst, ein einziges
gemeinsames Isocouple $PQ$. Der Ort der Fusspunkte der Lote von $P$ auf die
Asymptoten der dem Viereck umgeschriebenen Kegelschnitte ist ein Kegelschnitt,
der durch die sechs Fusspunkte der Lote auf die Seiten des Vierecks und durch
$P$ und $Q$ geht und deshalb der Achtpunktkegelschnitt oder der
Fusspunktkegelschnitt des Vierecks genannt wird.
[ Zacharias, M.; Prof. (Berlin) ]
Subject heading: Erster Halbband. Fünfter Abschnitt. Geometrie. Kapitel 5.
Algebraische Geometrie. B. Lineare und quadratische Gebilde
- Original Message -
From: peter ransom
To: willy.leend...@telenet.be ; sundial@uni-koeln.de
Sent: Tuesday, February 05, 2013 11:46 PM
Subject: RE: I found out (graphic) a theorem
Dear Willy,
I was intrigued by your findings and have asked around about the result.
John Sylvester of King's College, London has identified it - here is his
reply.
This is a known result, Frégier's theorem, and S is the Frégier point of P
w.r.t. the conic. (It doesn't have to be an ellipse.)
Proof probably easiest by complex projective geometry. The orthogonal lines
through P are line-pairs of an involution on the pencil at P, and cut an
involution on the conic. S is the vertex of this involution. If you want to
fill in the gaps, take the conic as y2 = xz, P as (t2, t, 1), and the lines PX,
PZ as the united lines of the involution (X = (1,0,0), Z = (0,0,1)). With a bit
of work, S comes out as Y (0,1,0), unless I made a mistake.
It appears as an exercise in Semple & Kneebone, Algebraic Projective
Geometry, p.153, ex. 16. (No proof, of course.) You can also find a statement
of the theorem at http://mathworld.wolfram.com/FregiersTheorem.html (but not a
proof), and in Wells' book, referenced there (but no proof, again).
Interesting extension: the locus of S as P moves around the conic is a second
conic, concentric and homothetic to the first. There is something about this at
http://tech.groups.yahoo.com/group/Hyacinthos/message/21195
All the best,
John
So, many thanks indeed Willy for sending this interesting result around, but
sorry that you cannot name it Leenders Theorem!
Best wishes,
Peter
Peter Ransom
President Designate, The Mathematical Association
--
From: willy.leend...@telenet.be
Subject: I found out (graphic) a theorem
Date: Sun, 3 Feb 2013 23:11:15 +0100
To: sundial@uni-koeln.de
In his book "Die Sonnenuhr und ihre Theorie" (The sundial and his theory)
Jörg Meyer writes on page 200 (my English translation):
I found the following remarkable theorem in the book of Heinz Schilt. 'Ebene
Sonnenuhren' (Plane sundials)
Through the point P where all the hour lines of any sundial come together, a
circle is drawn.
The center M and the radius of the circle are irrelevant.
The hour lines whose hour angle differ from each 6 hours or 90 ° were grouped
into pairs.
The points where the hour lines of a pair intersect the circle, are connected
Louis Janin
Hallo Who has some facts (birthday, is he living?, where?) about Louis Janin from Sèvres, Fance? Thanks Klaus EichholzZum Ruhrblick 5D44797 Bochum[EMAIL PROTECTED]
Mail-Adress
Hallo! Who can help me to find the E-Mail-Adress of John Lamprey? Klaus Eichholz Germany [EMAIL PROTECTED]
Fwd: Re: Kircher/Hevelius
Hallo Darek, in the meantime I found some examples for refelection dials. * 1632 Kirchner in Avignon, siehe Rohr 1994* ** *1637 Maignan * *Rom: Santa Trinità dei Monti* *Bild *** <http://www.instoria.it/home/astrolabio_1_grande.jpg>*http://www.instoria.it/home/astrolabio_1_grande.jpg*** *Bericht: http://www.nicolaseverino.it/Trinita%20dei%20Monti.htm#cronologia%20meridiane%20riflessione* ** *1644 Maignan* *Rom: Palazzo Spada* *Bild: <http://digilander.libero.it/meridianeinpiemonte/info_gnomo_calendari.htm>http://digilander.libero.it/meridianeinpiemonte/info_gnomo_calendari.htm* *<http://www.amastrofili.org/Doc/Articoli/2006/OmbraTempo/img0412.jpg>http://www.amastrofili.org/Doc/Articoli/2006/OmbraTempo/img0412.jpg* *http://www.hipparcos.altervista.org/hipparcos/images/Attivita/VisiteEscursioni/palazzoSpada/Meridiana_Palazzo_Spada_Roma_10-5-08-%284%29.jpg* ** *1673* *Jean Bonfa <https://fr.wikipedia.org/w/index.php?title=Jean_Bonfa&action=edit&redlink=1> (né en 1638 à Nîmes <https://fr.wikipedia.org/wiki/N%C3%AEmes> et mort en 1724 à Avignon <https://fr.wikipedia.org/wiki/Avignon>)* *Horloge solaire du lycée Stendhal, Gremoble* *Bild: <https://upload.wikimedia.org/wikipedia/commons/thumb/1/15/Cadran_solaire_Stendhal_-_Grenoble.jpg/1280px-Cadran_solaire_Stendhal_-_Grenoble.jpg>https://upload.wikimedia.org/wikipedia/commons/thumb/1/15/Cadran_solaire_Stendhal_-_Grenoble.jpg/1280px-Cadran_solaire_Stendhal_-_Grenoble.jpg* *Bericht:* *http://cadrans-solaires.scg.ulaval.ca/v08-08-04/pdf/4-2-grenoble-cs.pdf* Some literature you will find in the appendix. Besst regards Klaus Eichholz Germany Am 24.03.2016 um 10:23 schrieb Darek Oczki: Hello everyone I am sure most of you on this list are familiar with the work Primitiae gnomonicae catoptricae by Athanasius Kircher. Its frontispiece depicts a reflective sundial drawn (designed) by Johannes Hevelius. If you havent seen it here you can view it: https://commons.wikimedia.org/wiki/File:Primitiae_gnomonicae_catoptricae,_by_Kitcher._Wellcome_L0006089.jpg I was wondering whether this drawing was just an exercise (book illustration) or parhaps an actual dial was created based on the disign. Does anyone know? I would appreciate any info on this. -- Best regards Darek Oczki 52N 21E Warsaw, Poland GNOMONIKA.pl Sundials in Poland http://gnomonika.pl --- https://lists.uni-koeln.de/mailman/listinfo/sundial Reflexsonnenuhren.docx Description: MS-Word 2007 document --- https://lists.uni-koeln.de/mailman/listinfo/sundial
