Making the Glass Disk for a 70-Inch Telescope Reflector (Classic Reprint) - Softcover

Finn, A. N.

Softcover

ISBN 10: 0282839313 ISBN 13: 9780282839314

Publisher: Forgotten Books, 2018

Synopsis

Excerpt from Making the Glass Disk for a 70-Inch Telescope Reflector

During succeeding centuries, as the art was developed, glass mak ing became an established industry and the quantity and quality of the product improved. It has only been within the last century, however, that glass making became a problem of scientific interest, and the resulting improvements made soon led to the production of glasses free from color, opaque inclusions, and other visible defects, and to the manufacture of glasses having certain definite composi tions. Such glasses have definite optical properties, and some of them are used in. The construction of precision optical instruments and consequently are referred to as optical glasses.

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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.

Edition details

• Publisher: Forgotten Books
• Publication date: 2018
• Language: English
• ISBN 10: 0282839313
• ISBN 13: 9780282839314
• Binding: Paperback
• Number of pages: 25