11. Birefringence is the difference between two principal indices of refraction of a uniaxial crystal. 12. Uniaxial means it has only one optic axis.13. It was a uniaxial test in which the bearing was also under a full structure load. 14. They are said to be uniaxial . 15. For considering the uniaxial anisotropy of the material, Everett functions are expanded by Fourier coefficients. 16. A uniaxial crystal is isotropic within the plane orthogonal to the optic axis of the crystal. 17. In the simplest form, uniaxial birefringence, there is only one special direction in the material. 18. Crystals are classified according to the number of optic axes ( uniaxial , biaxial ) they have. 19. Extension considering uniaxial anisotropy introduced by Ramesh et al . and corrected by Szewczyk requires additional parameters: 20. The strength of a joint is defined as the force required to break the strap in uniaxial tension.
