## Introduction to Solid State Physics |

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Page 17

We discuss first the symmetry elements associated with the three-dimensional

crystal point groups: Rotation aires. One-, two-, three-, four-, and six-fold rotation

°.

We discuss first the symmetry elements associated with the three-dimensional

crystal point groups: Rotation aires. One-, two-, three-, four-, and six-fold rotation

**axes**are permissible, corresponding to rotations by 360°, 180°, 120°, 90°, and 60°.

Page 18

Rotation

plane normal to it: X/m or m Rotation

Rotation

with ...

Rotation

**axis**: X Rotation-inversion**axis**: X - - - - - X Rotation**axis**with mirrorplane normal to it: X/m or m Rotation

**axis**with diad**axis**(**axes**) normal to it: X2Rotation

**axis**with mirror plane (planes) parallel to it: Xm Rotation-inversion**axis**with ...

Page 33

1.20a call forth other inversion centers, and a complete plan of a unit of the space

group P1 is shown in Fig. 1.20h. There are thirteen monoclinic space groups; we

illustrate only four of them: P2, containing a rotation diad

1.20a call forth other inversion centers, and a complete plan of a unit of the space

group P1 is shown in Fig. 1.20h. There are thirteen monoclinic space groups; we

illustrate only four of them: P2, containing a rotation diad

**axis**, is shown in Fig.### What people are saying - Write a review

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