¶ Seven Axes of Symmetry. Superficial Axes
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Index Entry
There are only three superficial axes of symmetry of crystallography. They are:
Spin of vertex )
Spin of mid-edge ) =three superficial axes
Spin of center of area )
(that is, c.g. of mid-faces) )
These are all the superficial surface angles which are the gravity. The central angles are the radiation.
¶ Citations
- RBF to EJA, 3200 Idaho, Washington DC, 21 Dec. '71.
