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Infra-Red Transmission and Refraction Data on Standard Lens and Prism Material (Classic Reprint) - Softcover
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 p. 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 0. However, the material is difficult to Obtain, and the next best substance is rock salt, which permits measurements to 14 pt when using a 60° prism, and to 16 u when using a 30° prism. By inclosing the spectro meter 14 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.
The next best prism material is quartz, which is the most use ful in the region of the spectrum extending from the visible to p. 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 0. However, the material is difficult to Obtain, and the next best substance is rock salt, which permits measurements to 14 pt when using a 60° prism, and to 16 u when using a 30° prism. By inclosing the spectro meter 14 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.
"synopsis" may belong to another edition of this title.
- PublisherForgotten Books
- Publication date2016
- ISBN 10 1334254001
- ISBN 13 9781334254000
- BindingPaperback
- Number of pages22
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