Encyclopaedia Br
章节目录
共 96 题- ENCYCLOPAEDIA BRITANNICA
- ELEVENTH EDITION
- VOLUME VII, SLICE VII
- Crocoite to Cuba
- ARTICLES IN THIS SLICE:
- FOOTNOTE:
- FOOTNOTE:
- FOOTNOTES:
- FOOTNOTE:
- FOOTNOTES:
- FOOTNOTES:
- FOOTNOTES:
- CH2(COOH)2 + CH3CHO -> CH3CH:C(COOH)2 -> CH3.CH:CH.COOH;
- FOOTNOTE:
- FOOTNOTE:
- FIG. 2.--Early Crwth, 9th century.]
- FOOTNOTES:
- FIG. 2.--Crown of the Holy Roman Empire.]
- Royal Crowns. William I. to Henry IV.]
- Royal Crowns. Henry V. to Charles I.]
- Recent Forms of the English Crown.]
- Coronation Crowns of Queen Victoria and King Edward VII.]
- Coronets of Dukes, Marquesses and Earls.]
- Coronets of Viscounts and Barons.]
- FOOTNOTE:
- FOOTNOTE:
- Thus conceived as the holder of a great
- GENEALOGY OF THE KINGS OF JERUSALEM
- FOOTNOTES:
- The dots indicate the actual size.]
- FOOTNOTES:
- III. RELATIONS BETWEEN CRYSTALLINE FORM AND CHEMICAL COMPOSITION.
- I. CRYSTALLINE FORM
- The fundamental laws governing the form of crystals are:--
- 1. Law of the Constancy of Angle.
- 2. Law of Symmetry.
- 3. Law of Rational Intercepts or Indices.
- Axes and Planes of Symmetry of an Octahedron.]
- Any other face (h2k2l2) lying in this zone must satisfy the equation
- 1. CUBIC SYSTEM
- HOLOSYMMETRIC CLASS
- There are seven kinds of simple forms, viz.:--
- TETRAHEDRAL CLASS
- PYRITOHEDRAL[2] CLASS
- PLAGIHEDRAL[3] CLASS
- TETARTOHEDRAL CLASS
- 2. TETRAGONAL SYSTEM
- Tetragonal Bipyramids.]
- HOLOSYMMETRIC CLASS
- There are seven kinds of simple forms, viz.:--
- Tetragonal Bipyramids of the first and second orders.]
- Combinations of Tetragonal Prisms and Pyramids.]
- SCALENOHEDRAL CLASS
- BIPYRAMIDAL CLASS
- PYRAMIDAL CLASS
- DITETRAGONAL PYRAMIDAL CLASS
- TRAPEZOHEDRAL CLASS
- BISPHENOIDAL CLASS
- 3. ORTHORHOMBIC SYSTEM
- There are three symmetry-classes in this system:--
- HOLOHEDRAL CLASS
- Orthorhombic Bipyramids.]
- Holohedral Orthorhombic Combinations.]
- PYRAMIDAL CLASS
- BISPHENOIDAL CLASS
- 4. MONOCLINIC[5] SYSTEM
- HOLOSYMMETRIC CLASS
- HEMIMORPHIC CLASS
- CLINOHEDRAL CLASS
- 5. ANORTHIC SYSTEM
- HOLOSYMMETRIC CLASS
- ASYMMETRIC CLASS
- 6. HEXAGONAL SYSTEM
- HOLOSYMMETRIC CLASS
- Direct and Inverse Rhombohedra.]
- DITRIGONAL PYRAMIDAL CLASS
- TRAPEZOHEDRAL CLASS
- RHOMBOHEDRAL CLASS
- TRIGONAL PYRAMIDAL CLASS
- TRIGONAL BIPYRAMIDAL CLASS
- DITRIGONAL BIPYRAMIDAL CLASS
- HOLOSYMMETRIC CLASS
- Combinations of Hexagonal forms.]
- BIPYRAMIDAL CLASS
- DIHEXAGONAL PYRAMIDAL CLASS
- TRAPEZOHEDRAL CLASS
- HEXAGONAL PYRAMIDAL CLASS
- Misshappen Octahedra.]
- Crystal of Zircon (clinographic drawings and plans).]
- II. PHYSICAL PROPERTIES OF CRYSTALS.
- Etched Figures on Hexagonal Prisms.]
- Interference Figures of a Biaxial Crystal.]
- III. RELATIONS BETWEEN CRYSTALLINE FORM AND CHEMICAL COMPOSITION.
- FOOTNOTES:
- The Ctenophora are classified as follows:--
- FOOTNOTES: