Excerpt from Elements of Optical Mineralogy: An Introduction to Microscopic Petrography; With Description of All Minerals Whose Optical Elements Are Known and Tables Arranged for Their Determination Microscopically
Probably no words are needed to justify the exclusive use of the Miller symbols in referring to crystal faces and forms.
Special thanks are due to Professor U. S. Grant, of North western University, for critical suggestions. And for the labora tory illustrations of Part I, which in the main are adopted from his manuscript notes.
Professor C. E. Mendenhall, of the University of Wisconsin, kindly revised the chapter devoted to the phenomena of light. And to him the authors are indebted for some exact definitions of the movements of light.
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Excerpt from Elements of Optical Mineralogy: An Introduction to Microscopic Petrography; With Description of All Minerals Whose Optical Elements Are Known and Tables Arranged for Their Determination Microscopically
The bertrand lens is a device for magnifying the inter ference figure when it is indistinct, or when it is desired, as in the case of biaxial crystals, to measure the angle of the optic axes (p. Or to make a drawing of it. It is a small lens and serves, with the ocular in position, as an objective of low power to greatly increase the size and distinctness of the interference figure. It is inserted at U, figure 54, the lower end of the main tube of the microscope. It is focused on the interference figure by the rachet at the upper end of the tube. (see also p.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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Paperback. Condición: New. Print on Demand. This book is an introductory guide to the principles and methods of optical mineralogy. It introduces two subjects, certain phenomena of light and elements of mineralogy, as they apply to the study of crystalline substances. Written for both students and independent workers in the field, the book covers essential topics such as propagation of light, the index of refraction, and the phenomenon of polarization. It includes clear illustrations of the effects of crystals on light, new drawings, and updated results on the feldspar group. The author also provides new tables for determining minerals microscopically. The book is an up-to-date, practical resource that aids in understanding the optical characteristics of minerals and provides data necessary to identify minerals encountered during the study of ores, veins, or other mineral deposits. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Nº de ref. del artículo: 9781332862108_0
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Librería: PBShop.store US, Wood Dale, IL, Estados Unidos de America
PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000. Nº de ref. del artículo: LW-9781332862108
Cantidad disponible: 15 disponibles
Librería: PBShop.store UK, Fairford, GLOS, Reino Unido
PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000. Nº de ref. del artículo: LW-9781332862108
Cantidad disponible: 15 disponibles