Sentence Examples


  • The bisphenoids (the hemihedral forms of the tetragonal and rhombic bipyramids)., and the trigonal pyramid of the hexagonal system, are examples of non-regular tetrahedra (see Crystallography).
  • It sublimes in small rhombic tables or needles, and is slightly soluble in cold water, the solution possessing an acid reaction.
  • Elie de Beaumont, in his speculations on the relation between the direction of mountain ranges and their geological age and character, was feeling towards a comprehensive theory of the forms of crustal relief; but his ideas were too geometrical, and his theory that the earth is a spheroid built up on a rhombic dodecahedron, the pentagonal faces of which determined the direction of mountain ranges, could not be proved.'
  • It crystallizes in rhombic needles, which melt at 4 2.5-43° C., and boil at 182-183° C.; its specific gravity is 1.0906 (o° C.).
  • Properties.-Sulphur exists in several allotropic modifications, but before considering these systematically we will deal with the properties of ordinary (or rhombic) sulphur.

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