Crystallography An Outline of the Geometrical Properties of Crystals
The book Crystallography An Outline of the Geometrical Properties of Crystals was written by author Thomas Leonard Walker Here you can read free online of Crystallography An Outline of the Geometrical Properties of Crystals book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Crystallography An Outline of the Geometrical Properties of Crystals a good or bad book?
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Racemic acid is a mixture of equal proportions of two distinct tartaric acids possessing the same chemical composition and individually giving rise to crystals showing this right-handed and left-handed character. Lavo- rotary and dextro-rotary organic substances are known as stereoisomers. Substances crystallizing in this class, being characterized by a hemi-morphic axis of symmetry, show pyro-electricity as a result of change of temperature. CHAPTER XIII TRICLINIC SYSTEM Only two classes of cr...ystals are included in the triclinic system. One of these, the holohedral triclinic class, is char- acterized by symmetry about a centre. The other class, which is hemihedral triclinic, is marked by the absence of all sym- metry. In the latter class any face may appear without the compulsory appearance at the same time of any other face. The crystal form consists of only one face. HOLOHEDRAL CLASS Symmetry. The symmetrical arrangment of faces in pairs about a centre is peculiar to the holohedral triclinic class.
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