twin law

twin law

[′twin ‚lȯ]
(crystallography)
A statement relating two or more individuals of a twin to one another in terms of their crystallography (twin plane, twin axis, and so on).
References in periodicals archive ?
The twin law is penetration by reflection across (100) as confirmed by X-Ray diffraction analysis.
Joanne Wilson, 10, of Twin Law Cairns, Westruther, Gordon, had got off her school bus and was crossing the road when she was struck by a car just before 4.
According to Terry Huizing (who bought the two best specimens), this is a new twin law for calcite from Morocco, although somewhat similar twins were once found at the El Hamman mine in 7 to 8-cm crystals, so the new twins might be from the same location.
These lamellae can now be successfully explained by another twin law with {201} twin planes, and are the direct result of the distortion of a pseudocubic tetragonal cell.
In the long sweep of history, the US laws of exceptionalism the Pressler Amendment and the Hyde Act together would go down as the twin laws that contributed to the debilitating and possibly destabilising arms race in South Asia.
Currently, 11 states have twin laws, including Georgia, Louisiana, Minnesota, New Jersey, Massachusetts, Mississippi, Pennsylvania, Texas, and Virginia (www.
Twin laws to raise state taxes on corporations and the wealthy are expected to be referred to the ballot in January, and if repealed they would force lawmakers to resolve state government's financial predicament during a special session in February.
Surprisingly, the X-ray results suggest both reported twin laws are simultaneously operative