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The measurement of large optic axial angles with the universal stage
Published online by Cambridge University Press: 14 March 2018
Summary
A comparison has been made of the relative speed, accuracy, and precision of several methods of measuring large optic axial angles with the universal stage. It is concluded that a method based on the direct location of a single optic axis and the application of the Biot-Fresnel law will frequently be the most satisfactory when only the standard, low refractive index centre plate for the stage is available. If a centre plate of high refractive index is employed, however, good results can normally be obtained by using the more rapid method based on the direct location of both optic axes.
- Type
- Research Article
- Information
- Mineralogical magazine and journal of the Mineralogical Society , Volume 35 , Issue 273 , March 1966 , pp. 763 - 769
- Copyright
- Copyright © The Mineralogical Society of Great Britain and Ireland 1966