The Spectroscope and Gemmology pdf epub mobi txt 電子書下載 2024

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R Keith Mitchell

Gemstone Press

2006-10-1

288

GBP 43.50

Paperback

9780943763521

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发表于2024-12-26

The Spectroscope and Gemmology epub 下載 mobi 下載 pdf 下載 txt 電子書下載 2024

The Spectroscope and Gemmology pdf epub mobi txt 電子書下載 2024

圖書描述

Until 1933 the refractometer and the microscope were the two principal tools in gem testing. Then Basil W. Anderson introduced the hand spectroscope, which quickly became the third vital instrument for the U.K. gemologist. The publication of Anderson's papers in the mid-1950s alerted gem laboratories worldwide to the importance of this instrument. Today its use is universal. Anderson and his lifelong colleague, James Payne, both of the world's first full-time gemological laboratory, were the pioneers in recognizing the vast potential of the spectroscope for this purpose, and The Spectroscope and Gemmology, as the extensively edited, updated and enlarged version of Anderson's original papers, provides a vital textbook wherever gemology is used or taught. The distinguished gemologist R. Keith Mitchell has undertaken the editing and has added chapters on the Pye spectrophotometer and on lasers.

The Spectroscope and Gemmology 下載 mobi epub pdf txt 電子書