Author: Allerton S. Cushman

Publisher: Forgotten Books

Published: 2017-11-05

Total Pages: 40

ISBN-13: 9780260323194

Excerpt from The Effect of Water on Rock Powders We are certainly entitled to speak of solid solution in certain definite cases, where the complete homogeneity combined with the possibility of varying composition, which are characteristic of the state of solution, are found. In colored specimens of glass and in isomorphous mixtures-oi two alums, for example - we are just as little able, even with the help of the microscope, to perceive the presence of more than one substance, as in a solution of sugar in water. It is a familiar fact that the ordi nary colorless alum, when crystallizing from solutions containing the highly colored chrom-alum, forms octahedra more or less tinted with chrom-alum; and yet the most minute observation reveals no gross irregularities in the physical distribution of the material, or any other evidence of lack of homogeneity. In such a case, therefore, we speak of the existence of a solid solution. When the substance is amorphous, as in the case of colored glass, the analogy to a fluid is so complete that the two are connected by a series of more or less viscous mixtures in such a way that no Sharp distinction can be drawn. Of course, when the solid solution is crystalline it must be admitted that it differs from a fluid solution fundamentally, in so far that an arrangement of the molecules according to some definite order has taken place. The essential point is that the laws of fluid solutions have been successfully applied to solid ones. 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.