Difference between revisions of "Dictionary:Symmetry system/es"

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There are eight groups of symmetry properties possessed by homogeneous solids which can be distinguished from one another by the forms of their elastic tensors. Rotational symmetry means that a body is the same after rotation (other than rotation of 2π) about a symmetry axis. Mirror symmetry exists at a plane in a body if and where the body on one side of the plane is identical to the reflection of the body on the other side. The symmetry systems ranked according to the number of independent elastic constants are shown in Figure S-29. The various systems can be thought of as caused by parallel sets of cracks, though this may not be how they are created. See also anisotropic (seismic).