A Study of Direct and Indirect Illumination (Classic Reprint)
Language: English
Published by Forgotten Books, 2017
- Softcover
- New
Seller: Forgotten Books, London, United KingdomForgotten Books
AbeBooks seller since June 2, 2021
Condition: New
US$ 18.74
Quantity: Over 20 available
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Seller Inventory # 9781528322096_0
- Title
- A Study of Direct and Indirect Illumination (Classic Reprint)
- Author
- Alexander McDougall Simons
- Publisher
- Forgotten Books
- Publication year
- 2017
- Condition
- New
- Book Type
- print-on-demand item
- Binding
- Paperback
- Language
- English
- ISBN 10
- 1528322096
- ISBN 13
- 9781528322096
- Seller catalogs
- Electronics
In order to compare different systems of illumination there must be some means of comparison. Consequently we have the candle power, foot candle, mean spherical candle and etc. The candle power is the unit by which the intensity of a source is measured. Thus a light is said to have an intensity of one candle power when it has the same intensity as a sperm candle which burns 20 grams of sperm in 10 minutes. This is the English unit of intensity. The German unit is 9 of the English.
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.
Forgotten Books
London, United Kingdom
AbeBooks seller since June 2, 2021
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