Open AccessOn a large scale crystalline structure in certain glasses of exceptional composition
Publication year - 1932
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1932.0120
Subject(s) - character (mathematics) , refraction , composition (language) , scale (ratio) , field (mathematics) , stress (linguistics) , materials science , chemistry , mineralogy , optics , chemical physics , composite material , crystallography , physics , mathematics , geometry , literature , pure mathematics , art , philosophy , linguistics , quantum mechanics
Some years ago I described a doubly refracting structure in silica glass. This was detected by examining the glass between crossed nicols, using the necessary precautions to get a really dark field, so that very weak double refractions are brought into evidence. The character of this double refraction was such that it could not be attributed to mechanical stress, and had rather to be assimilated to the “liquid crystals” observed by Lehmann in some melted organic substances.