Анализ данных: статистические и вычислительные методы для научных работников и инженеров

This second edition'Gemmology'has been expanded and updated throughout by the well known writer and editor of Butterworth-Heinemann's gemmology series, Peter Read. This is a much needed update of a classic text and new syllabus information and sample examination theory papers for the Gemmological Association's Preliminary and Diploma courses are included. The additions also incorporate more recent developments, such as the introduction of synthetic moissanite and the De Beer's instruments for distinguishing between natural and synthetic diamonds.'Gemmology'still serves as a useful reference guide for gemmologists detailing the latest natural and synthetic gem materials and is an invaluable text for anyone in the gemmological profession. Read, a writer and lecturer on gems and gem test equipment (which he also designs), offers an updated edition of his 1991 reference, written for both beginning and advanced students. Coverage includes introductory chapters on the evolution of the science of gemology and geological formation and occurrence of gemstones, as well as detailed discussion of all the various gemstone properties. This second edition includes new syllabus information and sample examination theory papers for the Gemmological Association's Preliminary and Diploma courses. Other additions incorporate recent developments, such as the introduction of synthetic moissanite and the De Beers instruments for distinguishing natural and synthetic diamonds. "Especially relevant in this second, updated edition are the new syllabus information and sample examination theory papers for the Gemmological Association's Preliminary and Diploma courses. These provide essential reading for students studying for their Fellowship. The additions also incorporate more recent developments, such as the introduction of synthetic moissanite and the De Beers instruments for distinguishing between natural and synthetic diamonds."--BOOK JACKET