This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 Excerpt: ...of fine-ribbed glass in diffusing light, which has been very widely adopted in modern factory construction. My reasons for giving a preference to ribbed glass in true curves, twenty-one ribs to the ifch, set vertically, were that the main object in glazing a factory is to give a wide diffusion of light and to use ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 Excerpt: ...of fine-ribbed glass in diffusing light, which has been very widely adopted in modern factory construction. My reasons for giving a preference to ribbed glass in true curves, twenty-one ribs to the ifch, set vertically, were that the main object in glazing a factory is to give a wide diffusion of light and to use suitable glass at the lowest cost. In dealing theoretically with this matter I reasoned that if, by way of the Fresnel lense rays of light could be concentrated into single beams of high power, then by changing the angles of the prisms the rays of light might be deflected on horizontal or other planes. I found, however, that the cost of prismatic glass for glazing would be excessive, and that it would be difficult to keep clean, and by putting various types of glass, including prisms, to the test and photographing the images, it became apparent that for the general purpose of glazing, the preference would be given on every point to the common ribbed glass then in the market. Since that date the merits of prismatic glass have been presented in several different ways. It has great merit under certain conditions where it is desirable to deflect light in horizontal planes, as, for instance, from windows opening into basements, where by way of prisms the light can be deflected along the ceiling and then reflected from the white ceiling so as to give the effect of diffusion. There are many places where the special application of prisms may work very useful results. I submit herewith two photographs; one of a library lighted from a monitor in the roof, which had been very dark when glazed with clear glass, but which has been made very light by the mere substitution of ribbed glass. I also submit evidence of the different effects of light transmitted throu...
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Add this copy of The Prevention Of Loss By Fire: Fifty Years' Record Of to cart. $35.82, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2007 by Kessinger Publishing.
Add this copy of The Prevention Of Loss By Fire: Fifty Years' Record Of to cart. $38.05, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2010 by Kessinger Publishing.
Add this copy of The Prevention of Loss By Fire: Fifty Years' Record of to cart. $38.96, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2007 by Kessinger Publishing.
Add this copy of The Prevention of Loss By Fire; Fifty Years' Record of to cart. $40.89, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2013 by Hardpress Publishing.
Add this copy of The Prevention of Loss By Fire: Fifty Years' Record of to cart. $41.63, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2010 by Kessinger Publishing.
Add this copy of The Prevention of Loss By Fire; Fifty Years' Record of to cart. $53.62, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2019 by Wentworth Press.
