extinction angle


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Noun1.extinction angle - the angle from its axis that a crystal must be rotated before appearing maximally dark when viewed in polarized light
angle - the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians
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References in periodicals archive ?
With force commutated devices the extinction angle control scheme came into existence.
In the extinction angle control conduction starts at zero degrees or at the zero crossing and continues till any desired angle.
We have observed that each individual lamella has an extinction angle at 6.5[degrees] in regard to crystal elongation.
Extinction angle was determined the direction of extinction to the polarizer.
In the CCC it is necessary to distinguish between the apparent extinction angle ([gamma]') and the real extinction angle (y) as shown in fig 2.
Dark green, intensively pleochroic (lightly green-yellowish to dark green or black-green) amphibole grains 0.1-0.6 mm in size have extinction angle [gamma] / c = 13-20[degrees] corresponding to common amphibole.
The Extinction Angle Control or ([gamma]) Control and Current Control have been implemented on the Inverter side.
This allows the shear strain induced orientation to be easily characterized by the extinction angle through a polariscope setup.