Elements of crystallographyH. Holt and Company, 1890 - 270 páginas |
Términos y frases comunes
alternate planes axial ratio axis of symmetry basal pinacoid bounded called combination congruent corresponding crystal classes crystal forms crystal planes crystallographic cube dihexagonal direction ditetragonal pyramid edges equal faces figures grade of symmetry ground-form hedron hemi hemihedron hemimorphic hence hexagonal pyramid hexoctahedron holohedral forms holohedrons icositetrahedron index symbols indices infinity interfacial angles intersect isometric system lateral axes lateral parameter length limiting forms linear projection metry molecular structure molecules monoclinic Naumann occur octahedron octants orthoclase orthorhombic orthorhombic system pentagonal planes belonging planes of sym planes of symmetry position possess possible principal axis principal plane prism produced Professor quartz reference represents result rhombic dodecahedron rhombohedron scalenohedron second kind second order secondary planes shown in Fig solid angles sphenoidal substance symbol becomes tetartohedral tetragonal system tetrahedral tetrahedron three axes tion trapezohedral triclinic trigonal trisoctahedron twinning plane unit pyramids unity vertical axis vertical parameter zonal zone
Pasajes populares
Página 24 - ... it is one of the oldest as well as one of the most important of the lumber associations in existence. The Yellow Pine Association first had its origin among cer'Preliminary Report of the Federal Trade Commission on Activities of Lumber Manufacturers
Página 23 - ... principle in crystallography since that time and should not be abandoned unless the evidence is clearly against it. FIG. 2. The production of an (11o) face. Some authors express the fundamental law of crystallography as the law of simple mathematical ratio. Thus Williams4 says : " Experience has shown that only those planes occur on any crystal whose axial intercepts are either infinite or small even multiples of unity.
Página 42 - This system embraces all forms referable to three axes of unequal length, two of which intersect at an oblique angle, while they are both at right angles to the third.
Página 178 - These glucosides may be divided into two classes, according as they do or do not yield prussic acid on decomposition, and it is convenient to describe the former class as cyanogenetic glucosides.