Symposium Program
Monday, November 3, 2025
| Time | Speaker(s) | Title |
|---|---|---|
| 09:15 | Prof. Dr. Ina Prinz & Dr. Roberto Ferrari Arithmeum, Bonn & Museo Galileo, Florence | Welcome & Introduction |
| Session I (Session Chair: Dr. Roberto Ferrari, Museo Galileo, Florence) | ||
| 09:45 | Dr. Michael KoreyMathematisch-Physikalischer Salon, Dresden | A Heavenly Calculator at the Princely Court: the Digital Re-animation of a War-Damaged Renaissance Equatorium |
| 10:30 | Prof. Dr. Stephan HeldResearch Institute for Discrete Mathematics, Bonn | The Art of Chip Design and the Challenge of its Preservation & Curation |
| 10:45 - 11:00 | Coffee Break | ||
| 11:00 | Dr. Susanne ThürigenGermanisches Nationalmuseum, Nuremberg | „WAN ICH BIN EIN GESCHENCKH VOL. SO ZAIG ICH DIE STUNDT GOR WOL. BIN ABER LEHR. SO DUE ICHS NIT MEHR“ – Markus Purmann’s scaphe dial at the Germanisches Nationalmuseum |
| 11:45 | Thierry JaquemetBeyer Clock and Watch Museum, Zurich | Between Cultural Objects and Scientific Instruments: Timekeepers at the Beyer Clock and Watch Museum |
| 12:30 - 13:15 | Lunch Break (at the Arithmeum) | ||
| Session II (Session Chair: Dr. Filippo Camerota, Museo Galileo, Florence) | ||
| 13:15 | Dipl.-Ing. Luise Allendorf-HoeferDeutsches Museum, Munich | Example for Multiplication in Analogue Electronics – as Common as Tricky |
| 13:30 | Simona CasonatoMuseo Nazionale Scienza e Tecnologia, Milan | Hidden Protagonists: A Pascaline Replica and its Makers in 1960s Italy |
| 14:15 | Dr. Maciej KluzaJagiellonian University Museum, Kraków | Slonimski Adding Device – one Object, many Stories |
| 15:00 - 15:15 | Coffee Break | ||
| 15:15 | Prof. Dr. Patrick RoccaArithmeum, Bonn | An Astonishing Object still in Private Hands: the Sundial Quadrant and Trient signed by Christoph Schissler (Augsburg, 1569) |
| 16:00 | Teresa NovyMuseum für Franken, Würzburg | Constructing Order: Neumann’s Proportional Sector and his Architecture |
| 16:45 |
Guided Tour of the Arithmeum
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| 18:00 | Welcome Reception (at the Arithmeum) | |
| 19:00 | Dinner (Rheinhotel Dreesen) | ||
Tuesday, November 4, 2025
| Time | Speaker(s) | Title |
|---|---|---|
| Session III (Session Chair: Prof. Dr. Patrick Rocca, Arithmeum, Bonn) | ||
| 09:00 | Dr. Karsten GaulkeAstronomisch-Physikalisches Kabinett, Kassel | The Calculation Globe of Landgraf Wilhelm IV. of Hesse-Kassel (1532-1592) – a Most Unique Analogue Computer to Convert Spherical Angles in Ecliplical and Equatorial Coordinates without any Calculation |
| 09:45 | Dr. Cyrille FoassoMusée des Arts et Métiers, Paris | The Planimeter and Other Instruments of the Strange Mr. Ernst |
| 10:30 - 10:45 | Coffee Break | ||
| 10:45 | Dr. Giorgio Strano / Gaia CuginiMuseo Galileo, Florence | Egnazio Danti’s Instrumentum primi mobilis and the Sinical Quadrant |
| 11:30 | Prof. Dr. Ina PrinzArithmeum, Bonn | Johann Jacob Sauter – Clockmaker and Calculating Machine Inventor: the Appeal of the Original Object versus Preserving its Function – a Contrast? |
| 12:15 - 13:30 | Lunch Break | ||
| Session IV (Session Chair: Prof. Dr. Ina Prinz, Arithmeum, Bonn) | ||
| 13:30 | Tiemen CocquytRijksmuseum Boerhaave, Leiden | Fluid Instruments: a Late Planispheric Astrolabe by Michiel Coignet |
| 14:15 | Eva KudrassDeutsches Technikmuseum, Berlin | Konrad Zuse’s First Computer Z1: Exhibiting, Documenting, Restoring |
| 15:00 - 15:15 | Coffee Break | ||
| 15:15 | Dr. Joshua GormanCollection of Historical Scientific Instruments, Harvard | Toward an Ethical Stewardship of Instrument Collections: Exploring Practice in a Scientific Heritage Collection |
| 16:00 | Johannes KaminskiArithmeum, Bonn | Historical Books on Scientific Instruments as Museum Objects - and Beyond |
| 16:45 | Professor Dr. Ina Prinz Arithmeum, Bonn (Director) Professor Dr. Patrick Rocca Arithmeum, Bonn (Chief Curator) |
Goldmedals for Multiplication – Timoléon Maurel and Léon Bollée: How to Present Leading Technologies of Former Centuries
A special tour comparing calculating machines of Timoléon Maurel and Léon Bollée. |
| 17:30 | Closing Discussion / Outlook | |
| 19:00 | Dinner (Il Punto) | ||
Wednesday, November 5, 2025
| Time | Event | |
|---|---|---|
| 10:00 | Commemoration Session A memorial session to honor Professor Korte’s lifelong dedication to mathematics and all facets of its history. |
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| 12:00 | Lunch Reception (at the Arithmeum) | ||