Here are a request from Rete and my reply. Does anyone know more about Hugo Michnik? (Apologies for cross posting.)
------- Forwarded message follows ------- From: "Einstein" <[EMAIL PROTECTED]> To: "rete" <[EMAIL PROTECTED]> Date sent: Sat, 18 Nov 2006 09:23:28 +0100 Subject: [rete] Hugo Michnik > Dears, > > Does anyone have any information about Hugo Michnik, a Polish astronomer that > invent the bifilar sundial in 1932 and publish a paper in the magazine > "Astronomische Nachrichten? > > I'd be very pleasant to hear. Thanks. > > Joe Haverford From: "Wolfgang R. Dick" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Date sent: Sat, 18 Nov 2006 15:32:11 +0100 Subject: Re: [rete] Hugo Michnik Hugo Michnik was a German high school teacher in Beuthen, Upper Silesia (now Bytom, Poland - see http://en.wikipedia.org/wiki/Bytom_Odrza%C5%84ski for a short information in English about the town, or follow the link to the extended German Wikipedia page). He is mentioned in the following web pages about sundials: http://www.abelard.org/france/motorway-aires11_sundials.php : Invented in 1922 by a German mathematician, Hugo Michnik, the two-wire sundial is rather special. http://www.de-zonnewijzerkring.nl/summaries/home-summaries-2003-3.htm : The horizontal bifilar sundial with two crossing wires as a shade device was invented in 1923, by Hugo Michnik of Germany. http://members.aon.at/sundials/bild38_1e.htm : The inventor of the bifilar sundial (two-thread clock) is professor Hugo Michnik, a high school mathematics teacher in Beuthen, Upper Silesia, who issued a document regarding the 'Therorie einer Bifilar - Sonnenuhr' (Theory of a Bifilar Sundial) in 1922. http://62.173.116.70/partnerpages/Lot.aspx?SaleHouseID=1040824&SaleID=1109551&UN ID=210594062 : The system was first devised by Hugo Michnik, a teacher in the Royal Gymnasium at Beuthen, Upper Silesia (now Bytom, Poland) in the first decades of the century, publishing a full account of it in the Aztronomishe Nachschriften 216 (1922) and 217 (1923). The two papers in Astronomische Nachrichten of 1922 and 1923 are available online at ADS (http://adsabs.harvard.edu/abstract_service.html). Michnik published also: Aufgaben aus der mathematischen Erd- und Himmelskunde ; I. Ueber die Laenge der Tagbogen der Gestirne. II. Bestimmung der Kurve, die der hoechste Punkt der Ekliptik ueber dem Horizonte eines gegebenen Beobachtungsortes beschreibt. Beuthen: M. Immerwahr, 1905, 14 pp. Beitraege zur Theorie der Sonnenuhren. 1. Untersuchung der temporaeren Stundenlinien antiker Sonnenuhren. Leipzig : Teubner, 1914, 12 pp. (Beilage zu dem Jahresberichte des Kgl. Gymnasiums zu Beuthen O./S. ; 1913/14) The World Biographical Information System does not have an entry for him, and I could not find a Dissertation (Ph.D. thesis, which usually contained a biography). So it will hardly be possible to find more biographical information, in case that no obituary was published. Kind regards, Wolfgang Dick ------- End of forwarded message ------- --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
