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Kaiser Friedrich II. und sein Astrologe Michael Scotus haben vor allem die deutsche Forschung seit Generationen fasziniert. Allerdings steht das Ausmass der Faszination oft im umgekehrten Verhaltnis zu gesichertem Wissen. Dieses Buch unternimmt im ersten Teil den Versuch einer Neubewertung der bekannten Quellen, wahrend der zweite Teil paradigmatisch den Liber de signis et imaginibus celi untersucht, jenen illustrierten astrologischen Traktat also, der neben dem Liber Physionomie Michaels erfolgreichstes Werk darstellt und im Laufe der Jahrhunderte immer wieder abgeschrieben,...

Historically, the idea that the stars and planets influence the Earth and its inhabitants has proved powerful in almost every culture, offering an important context for the use of mathematical and astronomical instruments. In the past, however, historians of astronomy have paid relatively little attention to astrology and other “non-scientific” topics, while historians of astrology have tended to concentrate on the analysis of texts rather than surviving artefacts, scientific instruments in particular. Heaven and Earth United is an attempt to redress the balance through an exploration of...

During their active lives, scientific instruments generally inhabit the laboratory, observatory, classroom or the field. But instruments have also lived in a wider set of venues, as objects on display. As such, they acquire new levels of meaning; their cultural functions expand. This book offers selected studies of instruments on display in museums, national fairs, universal exhibitions, patent offices, book frontispieces, theatrical stages, movie sets, and on-line collections. The authors argue that these displays, as they have changed with time, reflect changing social attitudes towards the...

First published as a special issue of the journal Medieval Encounters (vol. 23, 2017), this volume, edited by Josefina Rodríguez-Arribas, Charles Burnett, Silke Ackermann, and Ryan Szpiech, brings together fifteen studies on various aspects of the astrolabe in medieval cultures. The astrolabe, developed in antiquity and elaborated throughout the Middle Ages, was used for calculation, teaching, and observation, and also served astrological and medical purposes. It was the most popular and prestigious of the mathematical instruments, and was found equally among practitioners of various...