# Difference between revisions of "Twin index"

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A [[twinning]] operation overlaps both the direct and reciprocal lattices of the individuals that form a twin; consequently, the nodes of the individual lattices are overlapped (restored) to some extent ([[twinning (effects of)]]). The reciprocal ''n'' of the fraction 1/''n'' of (quasi)restored nodes is called ''twin index'' | A [[twinning]] operation overlaps both the direct and reciprocal lattices of the individuals that form a twin; consequently, the nodes of the individual lattices are overlapped (restored) to some extent ([[twinning (effects of)]]). The reciprocal ''n'' of the fraction 1/''n'' of (quasi)restored nodes is called ''twin index'' | ||

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+ | Chapter 3.3 of ''International Tables of Crystallography, Volume D''<br> | ||

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+ | [[Category:Fundamental crystallography]] |

## Revision as of 05:35, 26 April 2006

Indice de macle (*Fr*). Indice di geminazione (*It*)

# Twin index

A twinning operation overlaps both the direct and reciprocal lattices of the individuals that form a twin; consequently, the nodes of the individual lattices are overlapped (restored) to some extent (twinning (effects of)). The reciprocal *n* of the fraction 1/*n* of (quasi)restored nodes is called *twin index*

Chapter 3.3 of *International Tables of Crystallography, Volume D*