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Shaped face special

Recently quasicrystals having the shape of a triacontahedron have been discovered in specially prepared alloys of aluminum and other metals. A triacontahedron is a regular polyhedron with 30 identical, diamond-shaped faces (Fig. 3.35). Quasicrystals seemingly defy the rules of symmetry that do not allow a periodic structure having unit cells with five-fold symmetry. What is the symmetry of a triacontahedron Can you make a model of it similar to the polyhedra given in Appendix H ... [Pg.582]

The orifice-type flow measurement has been modified, and new, special-purpose devices have been introduced to meet particular process requirements. One such unique design is the annular orifice used to measure the hot and dirty gases in the steel industry. Here, the process flow passes through an annular opening between the pipe and a disk-shaped, concentrically located plate the pressure difference is detected between the upstream and downstream faces of that disk. (Refer to Table 3.81 for recommendations on selecting the right orifice plate design for various applications.)... [Pg.418]

See other pages where Shaped face special is mentioned: [Pg.138]    [Pg.10]    [Pg.1948]    [Pg.381]    [Pg.395]    [Pg.282]    [Pg.222]    [Pg.119]    [Pg.443]    [Pg.150]    [Pg.600]    [Pg.243]    [Pg.178]    [Pg.40]    [Pg.144]    [Pg.97]    [Pg.60]    [Pg.125]    [Pg.165]    [Pg.443]    [Pg.198]    [Pg.32]    [Pg.390]    [Pg.612]    [Pg.259]    [Pg.199]    [Pg.123]    [Pg.618]    [Pg.36]    [Pg.381]    [Pg.395]    [Pg.459]    [Pg.118]    [Pg.51]    [Pg.381]    [Pg.208]    [Pg.46]    [Pg.112]    [Pg.600]    [Pg.221]    [Pg.1187]    [Pg.91]    [Pg.2]    [Pg.381]    [Pg.395]    [Pg.183]    [Pg.99]    [Pg.100]   
See also in sourсe #XX -- [ Pg.289 ]



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Shaped face

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