# Twin law

(Difference between revisions)
 Revision as of 14:45, 21 April 2006 (view source)← Older edit Revision as of 14:49, 21 April 2006 (view source)Newer edit → Line 4: Line 4: = Twin law = = Twin law = - The ''twin law'' is indicated by the symbol of the twinning element of symmetry: $\bar 1$, [uvw] and (''hkl'') for the centre of symmetry, direction of the rotation axis and [[Miller indices]] of the mirror plane, in the order. Usually, instead of the single (''hkl'') plane, the symbol + The ''twin law'' expresses the operation that generate a twin. It is indicated by the symbol of the twinning element of symmetry: $\bar 1$, [uvw] and (''hkl'') for the centre of symmetry, direction of the rotation axis and [[Miller indices]] of the mirror plane, in the order. Usually, instead of the single (''hkl'') plane, the symbol {''hkl''} is used to indicate all the planes equivalent for symmetry.
 Legge di geminazione (It)

The twin law expresses the operation that generate a twin. It is indicated by the symbol of the twinning element of symmetry: $\bar 1$, [uvw] and (hkl) for the centre of symmetry, direction of the rotation axis and Miller indices of the mirror plane, in the order. Usually, instead of the single (hkl) plane, the symbol {hkl} is used to indicate all the planes equivalent for symmetry.