商品簡介
The Treatise on precious stones for the Ilkhanate, written around 1256 by the Persian astronomer-mathematician Na?ir al-D?n al- s?, constitutes a unique work that brings together gemstones, mechanics and laboratory verification. The text, contained in a manuscript about mechanics, offers an analysis of precious stones, antidotes of animal and plant origin, metals, preparations and uses for therapeutic or propitiatory purposes. Additionally, the anecdotes and stories detailed therein make it possible to draw comparisons with Greek, Latin, and Arabic works. Balance is the common thread that binds together intriguing references to the normal scale used in mixtures and the hydrostatic scale for determining the specific weight and degree of purity of materials.
