A new reconstruction and text of the
Placita of Aëtius (ca. 50 CE), accompanied by a full commentary and an extensive collection of related texts. This compendium, arguably the most important doxographical text to survive from antiquity, is known through the intensive use made of it by authors in later antiquity and beyond. Covering the entire field of natural philosophy, it has long been mined as a source of information about ancient philosophers and their views. It now receives a thorough analysis as a remarkable work in its own right. This volume is the culmination of a five-volume set of studies on Aëtius (1996–2020): Aëtiana I (ISBN: 9789004105805, 1996), II (Parts 1&2; set ISBN 9789004172067; 2008), III (ISBN 9789004180413; 2009), IV (ISBN: 9789004361454, 2018), and V (Parts 1-4). It uses an innovative methodology to replace the seminal edition of Hermann Diels (1879).
Why does a magnet attract iron? Why does a compass needle point north? Although the magnet or lodestone was known since antiquity, magnetism only became an important topic in natural science and technology in the early modern period. In Magnes Christoph Sander explores this fascinating subject and draws, for the first time, a comprehensive picture of early modern research on magnetism (c. 1500–1650). Covering all disciplines of this period, Magnes examines what scholars understood by ‘magnet’ and ‘magnetism,’ which properties they ascribed to it, in which instruments and practices magnetism was employed, and how they tried to explain this exciting phenomenon. This historical panorama is based on circa 1500 historical sources, including over 100 manuscripts.