Implicit Carolingian Tidal Data
Paul Hughes
Abstract Ten rotae and tables, contained in Carolingian works for Easter calculation, contain tidal information. The emergence of the terminology associated with these diagrams is explained, notably arcane terms malina Ledon, which would develop into our modern concepts springs neaps, term dodrans, first-of-flood. One particular rota, because its rich illumination, serves most offices an actual tide-table. This article also looks at difficulty tracing transmission to later Middle Ages complex scientific knowledge rota explanations commentaries written on them.
Early Science and Medicine