Infra Red Transmission And Refraction Data On Standard Lens And Prism Material Classic Reprint

Excerpt from Infra-Red Transmission and Refraction Data on Standard Lens and Prism Material The next best prism material is quartz, which is the most use ful in the region of the spectrum extending from the visible to a in the infra-red. Beyond this point a quartz prism is too opaque for practical work. From the standpoint of dispersion and transparency, a fluorite prism is the most useful in the region of 2 to 9 it. However, the material is difficult to obtain, and the next best substance is rock salt, which permits measurements to 14 a when using a 60 prism, and to 16 a when using a 30 prism. By inclosing the spectro meter '4 and by keeping the prism covered when not in use, the faces of a rock-salt prism are easily protected from moisture. 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.

This Tutorial Text is an outgrowth of the author's short course of the same title. It is intended as an introduction to readers unfamiliar with infrared zoom lenses, and as an aid to the practising engineer pursuing a related application. The first three chapters introduce the principles of optics and the unique aspects of the infrared region of the wavelength spectrum, with related optical design techniques addressed in Chapter 4. Chapters 5 through 8 present material unique to the subject of zoom lenses in the infrared. The appendix contains three landmark infrared zoom lens patents in their entirety, providing lens prescription data and a starting point for future design activity, in addition to the author's computer analysis of the three patents.

Excerpt from Radiometric Investigations of Infra-Red Absorption and Reflection Spectra Just how these specific groups of atoms are placed with respect to the crystallographic axes it is impossible to determine. A practical question in optics, viz, the possibility of finding material suitable for prisms for use in certain regions of the spectrum in which our present prism material is opaque or in which its dispersion is small, was also kept in View. 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.

This new up-to-date edition of the successful handbook and ready reference retains the proven concept of the first, covering basic and advanced methods and applications in infrared imaging from two leading expert authors in the field. All chapters have been completely revised and expanded and a new chapter has been added to reflect recent developments in the field and report on the progress made within the last decade. In addition there is now an even stronger focus on real-life examples, with 20% more case studies taken from science and industry. For ease of comprehension the text is backed by more than 590 images which include graphic visualizations and more than 300 infrared thermography figures. The latter include many new ones depicting, for example, spectacular views of phenomena in nature, sports, and daily life.

This book provides practical information on the use of infrared (IR) spectroscopy for the analysis of materials found in cultural objects. Designed for scientists and students in the fields of archaeology, art conservation, microscopy, forensics, chemistry, and optics, the book discusses techniques for examining the microscopic amounts of complex, aged components in objects such as paintings, sculptures, and archaeological fragments. Chapters include the history of infrared spectroscopy, the basic parameters of infrared absorption theory, IR instrumentation, analysis methods, sample collection and preparation, and spectra interpretation. The authors cite several case studies, such as examinations of Chumash Indian paints and the Dead Sea Scrolls. The Institute’s Tools for Conservation series provides practical scientific procedures and methodologies for the practice of conservation. The series is specifically directed to conservation scientists, conservators, and technical experts in related fields.

Comprehensive overview of the spectroscopic, mineralogical, and geochemical techniques used in planetary remote sensing.