twin plane

twin plane

[′twin ‚plān]
(crystallography)
The plane common to and across which the individual crystals or components of a crystal twin are symmetrically arranged or reflected. Also known as twinning plane.
References in periodicals archive ?
Contract awarded for air transport service people by twin plane and helicopter.
Murai et al (1976) [7] conducted experiments on twin plane incompressible jets issuing at an angle from the nozzle exit plane.
However, each of these authors chose a different unit cell orientation, yet cited the same twin plane as the most common
Using these cell dimensions, the twin planes {201} and {203} reported by Palache et al.
The twin plane system would have twice as many anchorages and installing and stressing operations.
It is estimated that a twin plane, stay-cable system would have required 23 percent more cable grout and 52 percent more weight of cable sheathing than the single plane system.
Murai et al (1976) [6] conducted experiments on twin plane incompressible jets issuing at an angle from the nozzle exit plane.
These twins are not as obvious as the flattened twins from Peru, Dalnegorsk and Bulgaria; Mogul mine galena twins are blocky, with only a hint of a re-entrant angle on the twin plane.
These parallel lines are attributed to polysynthetic twin planes corresponding to the rhombohedral {1011} faces of corundum.
The long needles lying along the polysynthetic twin planes were seen at high magnification to consist of tiny particles rather than a monocrystalline mineral.
Coppelius, here an inventor of photographic images, walks home alternately across the stage and on film, setting up Marin's twin planes of reality for this urban fairy tale with hardly a trace of cynicism.
The other two symmetry planes are identical to the Baveno twin planes {021}.