## Physical Properties of Crystals: Their Representation by Tensors and Matrices |

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Page 240

It is then a simple piece of analytical geometry, which we shall omit here, to show

that the extraordinary

axis. The lengths of the axes are evidently proportional to l/ne, l/ne, l/n0. (ii)

Biaxial ...

It is then a simple piece of analytical geometry, which we shall omit here, to show

that the extraordinary

**wave surface**is an ellipsoid of revolution about the opticaxis. The lengths of the axes are evidently proportional to l/ne, l/ne, l/n0. (ii)

Biaxial ...

Page 263

The

optical activity. The proportional difference between the radii of the two

undistorted surfaces (full curves) at right angles to the optic axis is 6 x 10-*. The

radial ...

The

**wave surfaces**of «-quartz (not to scale), showing how they are distorted byoptical activity. The proportional difference between the radii of the two

undistorted surfaces (full curves) at right angles to the optic axis is 6 x 10-*. The

radial ...

Page 322

Volume compressibility, 145-6.

principal wave velocities, 307. Weiss zone law, 277, 282. Wurtzite, 191. Yield

stress, 292. Young's Modulus, 131, 142-6. Zinc, 107, 144, 147-8, 205. — blende,

129 ...

Volume compressibility, 145-6.

**Wave surface**, 238-40. Wave velocity, 239-40.principal wave velocities, 307. Weiss zone law, 277, 282. Wurtzite, 191. Yield

stress, 292. Young's Modulus, 131, 142-6. Zinc, 107, 144, 147-8, 205. — blende,

129 ...

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### Contents

THE GROUNDWORK OF CRYSTAL PHYSICS | 3 |

EQUILIBRIUM PROPERTIES | 51 |

ELECTRIC POLARIZATION | 68 |

15 other sections not shown

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### Common terms and phrases

angle anisotropic applied axial vector centre of symmetry Chapter coefficients conductivity constant crystal classes crystal properties crystal symmetry cube cubic crystals defined denoted diad axis dielectric direction cosines displacement dummy suffix electric field ellipsoid equal equation example expression follows force given heat flow Hence hexagonal homogeneous indicatrix isothermal isotropic left-handed length longitudinal magnetic magnitude matrix notation measured moduli monoclinic number of independent Onsager's Principle optical activity orientation parallel Peltier permittivity perpendicular photoelastic effect piezoelectric effect plane plate polarization positive principal axes produced pyroelectric pyroelectric effect quantities radius vector referred refractive refractive index relation representation quadric represented right-handed rotation scalar second-rank tensor set of axes shear stress suffix notation surface susceptibility symmetry elements Table temperature gradient tensile stress thermal expansion thermodynamics thermoelectric effects Thomson heat tion transformation law trigonal uniaxial unit volume values written Young's Modulus zero