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

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Page 98

If the body merely undergoes a

antisymmetrical, as we now prove. Choose the origin on the axis of

In a pure

If the body merely undergoes a

**rotation**with no strain, the corresponding [eti] isantisymmetrical, as we now prove. Choose the origin on the axis of

**rotation**. ThenIn a pure

**rotation**the displacement of any point is. t Equation (6) need not be ...Page 261

They combine to give a vector OC' which vibrates in a plane that is

through an angle <f, from the vertical. It will be seen that, when OA' reaches the

vertical, OB' ifl still 2<f, away from it. 2<f, is the difference of phase. The

the ...

They combine to give a vector OC' which vibrates in a plane that is

**rotated**through an angle <f, from the vertical. It will be seen that, when OA' reaches the

vertical, OB' ifl still 2<f, away from it. 2<f, is the difference of phase. The

**rotation**ofthe ...

Page 278

(iii) glide plane: an operation in which each point is moved to the position of its

mirror image in a certain plane, and then translated parallel to this plane. (iv) n-

fold

integer.

(iii) glide plane: an operation in which each point is moved to the position of its

mirror image in a certain plane, and then translated parallel to this plane. (iv) n-

fold

**rotation**axis: a**rotation**of Zjr/n about a given axis, where n is a positiveinteger.

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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