The Ptolemy-Copernicus transition is analyzed in the interdisciplinary context. It is argued that in Ptolemaic programme mathematical exactness diverged from the principles of Aristotelian physics well-grounded empirically. The Copernican revolution can be considered as a realization of the dualism between mathematical astronomy and Aristotelian qualitative physics and the corresponding gradual efforts to eliminate it. The works of Copernicus, Galileo, Kepler and Newton were all the stages of the mathematics descendance from skies to earth and reciprocal extrapolation of earth physics on (...) divine phenomena. -/- Key words: Ptolemy, Copernicus, scientific revolution -/- . (shrink)

This essay analyzes the known evidence for Byzantine engagement with what are conventionally termed “alchemical” texts, theories, and practices of the Islamic world. Much of the evidence is difficult to date. Nevertheless, the aggregated direct, indirect, and circumstantial evidence suggests at least some engagement by Greek-speaking scholars throughout the Middle Ages. This engagement took various forms, from the use of Arabic, Persian, and Turkish terminology to the adaptation of whole Arabic treatises in Greek. Sometimes the Byzantine texts emphasize their Islamicate (...) sources, and sometimes they do not mention these sources at all. The resulting picture is still fragmentary, but it indicates that medieval Greek-speaking scholars were active in the circulation of chemical knowledge and techniques in the Mediterranean and Middle East. Byzantium, therefore, should no longer be left out of research into long-term patterns in the history of science. (shrink)