Wlodarczyk, Jaroslaw (Author)
The torquetum was a complex astronomical instrument whose construction is known thanks to certain descriptions, iconography and few extant artefacts. It was used in pre-telescopic astronomy from at least the 13th century. However, the usefulness of the torquetum as an observing instrument remains unknown. It is my intention to introduce a preliminary analysis of the merits and limitations of the torquetum in determining the coordinates of celestial bodies. For this purpose I shall refer to (1) written sources that contain descriptions of the construction of the instrument and its use; (2) the results of an examination of the torquetum constructed by Hans Dorn of Vienna (c.1487) and conserved in the Jagiellonian University Museum in Cracow; (3) elements of a theory of the instrument, which allow us to trace down instrumental errors, both systematic and accidental; (4) the only substantial and extant set of observations made with the torquetum, that is, a catalogue of 58 stars, compiled in Kassel in the years 1560–63.
...More
Book
Dekker, Elly;
(2012)
Illustrating the Phaenomena: Celestial Cartography in Antiquity and the Middle Ages
(/isis/citation/CBB001251402/)
Article
Sudhira Panda;
(2019)
The Bhāsvatī astronomical handbook of Śatānanda
(/isis/citation/CBB182763407/)
Book
Leonzio Meccanico;
Fabio Guidetti;
(2020)
Trattato della sfera celeste: Sulla costruzione di una sfera aratea
(/isis/citation/CBB574712770/)
Article
Lars Gislén;
(2017)
Apianus' latitude volvelles - how were they made?
(/isis/citation/CBB103254839/)
Article
Unno, Kazutaka;
(2006)
The Heitengi by Iwahashi Yoshitaka
(/isis/citation/CBB000630946/)
Article
Stone, Richard;
(2007)
History of Science. Scientists Fete China's Supreme Polymath
(/isis/citation/CBB001320709/)
Article
Soysa, Kemal de;
(2009)
An Unusual Silver Celestial Planisphere in the Whipple Museum
(/isis/citation/CBB000932514/)
Article
Cunningham, Clifford J.;
Marsden, Brian G.;
Orchiston, Wayne;
(2011)
The Attribution of Classical Deities in the Iconography of Guiseppe Piazzi
(/isis/citation/CBB001221514/)
Article
Dambis, A. K.;
Efremov, Yu. N.;
(2000)
Dating Ptolemy's Star Catalogue through Proper Motions: The Hipparchan Epoch
(/isis/citation/CBB000671360/)
Article
Christián C. Carman;
Gonzalo L. Recio;
(2022)
Tycho Brahe’s Appendix ad Observationes anni 1593 and the date of Brahe’s theory of Mars, the prototype for Kepler’s vicarious hypothesis
(/isis/citation/CBB080413113/)
Book
Glass, I. S.;
(2013)
Nicolas-Louis De La Caille, Astronomer and Geodesist
(/isis/citation/CBB001252494/)
Article
Edmunds, M. G.;
(2011)
An Initial Assessment of the Accuracy of the Gear Trains in the Antikythera Mechanism
(/isis/citation/CBB001023570/)
Essay Review
Mastorakou, Stamatina;
(2014)
Illustrating the Phaenomena: Celestial Cartography in Antiquity and the Middle Ages
(/isis/citation/CBB001552582/)
Article
S. Mohammad Mozaffari;
(2022)
An analysis of Ibn al-Shāṭir’s star table
(/isis/citation/CBB218902011/)
Article
Rupa, K.;
Venugopal, Padmaja;
Rao, S. Balachandra;
(2014)
Makaranda Sarini and Allied Saurapakna Tables---A Study
(/isis/citation/CBB001451548/)
Chapter
Karpenko, Vladimír;
Purš, Ivo;
(2011)
Edward Kelly Jako Hvĕzda Rudolfínské Doby
(/isis/citation/CBB001201948/)
Chapter
Mosley, Adam;
(2013)
Past Portents Predict: Cometary Historiae and Catalogues in the Sixteenth and Seventeenth Centuries
(/isis/citation/CBB001201000/)
Article
Bonnet-Bidaud, Jean-Marc;
Praderie, Françoise;
Whitfield, Susan;
(2009)
The Dunhuang Chinese Sky: A Comprehensive Study of the Oldest Known Star Atlas
(/isis/citation/CBB001034788/)
Article
Dekker, Elly;
Kunitzsch, Paul;
(2008-2009)
An Early Islamic Tradition in Globe Making
(/isis/citation/CBB001024037/)
Book
Simone Bartolini;
(2018)
Il cielo in terra: Storia delle linee meridiane e degli strumenti astronomici di Egnazio Danti
(/isis/citation/CBB263433192/)
Be the first to comment!