Medieval astronomical clocks in the Baltic region and the mysterious golden numbers in Gdansk
Summary, in English
clocks, an older one for clocks constructed around the beginning of the fourteenth century, and a second one for clocks constructed around the middle and end of this century. The older clocks are characterised by having a dial with a stereographic projection of the sky not used in the later clocks. Most clocks also have a calendar disk to display specific information about the days of the year like Sunday letters, golden numbers, and calendar date.
The only original calendar disk extant is the one on the Saint Mary cathedral in Gdansk giving times of the mean New Moons for the years 1463 to 1538. The times indicate an origin in the Alfonsine Tables modified for the longitude of Nuremberg in Germany.
- Theoretical Particle Physics - Undergoing reorganization
Journal of Astronomical History and Heritage
National Astronomical Research Institute of Thailand
- Natural Sciences
- Astronomy, Astrophysics and Cosmology
- ISSN: 1440-2807