Original Communications Eighth International Congress Of Applied Chemistry Washington And New York September 4 To 13 1912 Vol 1

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Publisher : Forgotten Books
ISBN 13 : 9780260740960
Total Pages : 382 pages
Book Rating : 4.7/5 (49 download)

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Download or read book Original Communications, Eighth International Congress of Applied Chemistry, Washington and New York, September 4 to 13, 1912, Vol. 10 written by and published by Forgotten Books. This book was released on 2017-11-10 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Original Communications, Eighth International Congress of Applied Chemistry, Washington and New York, September 4 to 13, 1912, Vol. 10: Section VC, Fuels and Asphalt The terms bitumen, asphalt, resin, tar, pitch, etc., are in com mon use, yet it is surprising to note how inadequately they are defined in most of the standard works and textbooks. This may be explained by the fact that these words Originally had limited meanings, but in keeping pace with the progress of science they were extended in scope until they completely outgrew their original bounds. It is probable that each of the expressions at first pertained to the aggregate properties characteristic Of some typical substance closely associated with the processes Of daily life. Thus, the generic term resin originated in the word rosin, and it even now alludes to substances resembling ordinary rosin in appearance and physical properties. Similarly our comprehension Of the generic term wax is based largely on the physical characteristics Of the Oldest known wax; namely, common beeswax. From time to time, as new substances were discovered in nature, or produced in the arts, the meanings Of these words were arbitrarily extended to include them. This resulted in a certain amount of over-lapping and consequent confusion. As the chemistry Of these substances was investigated, this was in certain cases adopted as an additional means of differentiation. But we are still forced to rely principally upon the physical characteristics of these groups of materials, for even today comparatively little accurate information is available with respect to their chemical composi tion. It is probable, however, that in the future this will be adopted as a basis of nomenclature. 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.