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Stereographic projections

  1. Jun 15, 2007 #1
    Hello,

    Can anyone tell me what the triangles, squares, and ovals mean in the projection on page 19? Does this have something to do with the directions for the third axis? On the next page several of the symbols are black. What significance does this have, also?

    Thanks
    -scott

    "[PLAIN [Broken] 19"]http://neon.mems.cmu.edu/rollett/27750/L19A_Single_Xtal_Aniso1_3Apr06.ppt#317,19,Slide [Broken] 19[/URL]
     
    Last edited by a moderator: May 2, 2017
  2. jcsd
  3. Jun 15, 2007 #2

    Dr Transport

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    They indicate symmetries of the lattice, ie a square is a 4-fold rotation, triangle a 3-fold rotation etc........
     
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