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
References in periodicals archive ?
With force commutated devices the extinction angle control scheme came into existence.
As compared to the traditional phase angle controlled or extinction angle controlled soft starting schemes the proposed methodology offers the definite advantages of reduced torque ripple and reduced source current harmonics.
Extinction angle was determined the direction of extinction to the polarizer.
The angle is related to an extinction angle measured by the POM (17) and the extinction direction coincides with the principal axis of the plastic strain (18-20).
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.
6 mm in size have extinction angle [gamma] / c = 13-20[degrees] corresponding to common amphibole.
The control model mainly consists of Firing Angle ([alpha]) and Extinction Angle ([gamma]), measurements and generation of firing signals for both the Rectifier and Inverter.
This allows the shear strain induced orientation to be easily characterized by the extinction angle through a polariscope setup.