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

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Page 64

with X, parallel to the field, the symmetry of the field is such that on Ox2, Ht = Ht =

0. In equation (26), therefore, we need only consider the terms with A; = 1.

**forces**in this arrangement from equation (26). Taking axes as shown in Fig. 3.56,with X, parallel to the field, the symmetry of the field is such that on Ox2, Ht = Ht =

0. In equation (26), therefore, we need only consider the terms with A; = 1.

Page 65

To see how it arises it is only necessary to consider that the expression (24) for

the

the finite size of the crystal, the

To see how it arises it is only necessary to consider that the expression (24) for

the

**force**applies to every small element of the crystal, and that therefore, owing tothe finite size of the crystal, the

**forces**on different parts of the crystal will, ...Page 83

to the axes Oxl, Ox2, Ox3. A

, exerted by the material outside the cube upon the material inside the cube. The

to the axes Oxl, Ox2, Ox3. A

**force**will be transmitted across each face of the cube, exerted by the material outside the cube upon the material inside the cube. The

**force**transmitted across each face may be resolved into three components.### What people are saying - Write a review

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### Contents

THE GROUNDWORK OF CRYSTAL PHYSICS | 3 |

EQUILIBRIUM PROPERTIES | 51 |

ELECTRIC POLARIZATION | 68 |

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### Common terms and phrases

angle anisotropic applied biaxial birefringence centre of symmetry Chapter coefficients conductivity crystal classes crystal properties crystal symmetry cube cubic crystals defined denoted diad axis dijk direction cosines electric field electro-optical effect ellipsoid equal equation example expression follows force given gives heat flow Hence hexagonal indicatrix isothermal isotropic lattice left-handed magnetic magnitude matrix notation measured moduli monoclinic number of independent Onsager's Principle optic axis optical activity orientation permittivity perpendicular photoelastic effect piezoelectric effect plane plate point group positive principal axes produced pyroelectric effect quadric quantities radius vector referred refractive index relation representation quadric represents right-handed rotation scalar second-rank tensor set of axes shear shown shows strain stress suffix notation symbol symmetry elements Table temperature gradient thermal expansion thermodynamics thermoelectric effects Thomson heat tion transformation law trigonal uniaxial unit volume values wave normal wave surface written zero