Elements of Optical Mineralogy: An Introduction to Microscopic Petrography; With Description of All Minerals Whose Optical Elements Are Known and ... Microscopically (Classic Reprint) - Softcover

Winchell, Newton Horace

9781332862108: Elements of Optical Mineralogy: An Introduction to Microscopic Petrography; With Description of All Minerals Whose Optical Elements Are Known and ... Microscopically (Classic Reprint)

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ISBN 10: 1332862101 ISBN 13: 9781332862108

Verlag: Forgotten Books, 2018

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Rese�a del editor

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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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.

Rese�a del editor

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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