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 ?
Across the United States, parents have lobbied state lawmakers to pass laws that prohibit the forced separation of twins; in 2005, the first such "twin law" passed in Minnesota.
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 4.30pm on the B6456, Whiteburn to Cammerlaws Road in Duns, near to the Howlet's Ha', Westruther.
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.
This twin law, however, failed to explain lamellae parallel to {201} of the tetragonal supercell previously observed by Zak (1972).
With the twin laws to further safeguard land passengers on board motorized vehicles in transit, we now have actually three major bills covering riders' safety.
The US has discriminated the nuclear world order between 'good proliferators' and 'bad proliferators.' 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.
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laws to raise state taxes on corporations and the wealthy are expected to be referred to the ballot in January, and if repealed they would force lawmakers to resolve state government's financial predicament during a special session in February.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!